A researcher administers a treatment to a sample from a population with a mean of m = 60. If the treatment is expected to increase scores and a one-tailed test is used to evaluate the treatment effect, then the null hypothesis would state that m ³ 60.A) TrueB) False
Answers
For the given statement after evaluating both the options the correct option is true under the condition that scores increase and null hypothesis is used to find out Treatment effect.
Here, null hypothesis clearly states that there is no significant difference is observed in comparison of sample mean and population mean.
Null hypothesis refers to statistical process which takes certain assumptions regarding two sets of different variables. In the branch of science it is used to find credibility regarding a sample data.
For the given case, the null hypothesis presents that the population mean remains unchanged (m = 60) post treatment, doesn't matter if it is greater than or equal to 60. The alternative hypothesis will be increases the mean for the treatment (m > 60).
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True. Your statement is: A researcher administers a treatment to a sample from a population with a mean of m = 60. If the treatment is expected to increase scores and a one-tailed test is used to evaluate the treatment effect, then the null hypothesis would state that m ≥ 60.
The null hypothesis typically represents no effect or no difference. In this case, the null hypothesis would state that the population mean remains unchanged (m = 60) after the treatment, not that it is greater than or equal to 60. The alternative hypothesis would be that the treatment increases the mean (m > 60).
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Related Questions
(Slope question!) Please help me:)
Answers
Answer:
A
Step-by-step explanation:
We know that (15, 11) (which means x = 15, y = 11) is a solution to Line Q so therefore:
11 = 4/3 * 15 + (k + 1)
11 = 21 + k
k = -10
Answer:
-10 = k
Step-by-step explanation:
y = 4/3x + ( k+1)
We know a point on the line is ( 15,11)
Substitute this point into the equation
11 = 4/3(15) + (k+1)
11 = 20 + k+1
Combine terms
11 = 21+k
Subtract 21 from each side
11-21 = k
-10 = k
Let f be a function of x. which of the following statements, if true, would guarantee that there is a number c in the interval [−2,3] such that f(c)=10 ?
a. f is increasing on the interval [-2,3], where f(-2)=0 and f(3)=20
b. f is increasing on the interval [-2,3], where f(-2)=15 and f(3)=30
c. f is continuous on the interval [-2,3], where f(-2)=0 and f(3)=20
d. f is continuous on the interval [-2,3], where f(-2)=15 and f(3)=30
Answers
Both c. f is continuous on the interval [-2,3], where f(-2)=0 and f(3)=20 and d. f is continuous on the interval [-2,3], where f(-2)=15 and f(3)=30 options are correct. given below is the explanation of the result.
using Intermediate value theorem:(statement: suppose that f∈c[a,b] and f(a)≠f(b) then given a number λ lies between f(a) and f(b) there exist a point c ∈(a,b) such that f(c)=λ)
know according to the Intermediate value theorem both option c and d are correct here because either f(a)<f(b) for a number λ lies between f(a) and f(b) there exist a point c ∈(a,b) such that f(c)=λ) here if we take interval [-2,3], where f(-2)=0 and f(3)=20 the theorem is applicable. if we have f(a)>f(b) for a number λ lies between f(a) and f(b) there exist a point c ∈(a,b) such that f(c)=λ so if we take the interval [-2,3], where f(-2)=15 and f(3)=30,the above stated theorem is applicable.
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Graph and find the solutions
Answers
The solutions to the system of equations are: y=2, x=0.
What is equations?
A mathematical statement known as an equation is made up of two expressions joined together by the equal sign. A formula would be 3x - 5 = 16, for instance. When this equation is solved, we discover that the value of the variable x is 7.
\($$\left[\begin{array}{c}y=3 x+2 \\y=-2 x+2\end{array}\right]$$\)
Substitute \($y=-2 x+2$\)
\($$[-2 x+2=3 x+2]$$\)
Isolate x for \($-2 x+2=3 x+2: \quad x=0$\)
For\($y=-2 x+2$\)
Substitute \($x=0$\)
\($$y=-2 \cdot 0+2$$\)
Simplify
y=2
The solutions to the system of equations are: y=2, x=0.
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The solutions to the system of equations are: y=2, x=0.
What is equations?
A mathematical statement known as an equation is made up of two expressions joined together by the equal sign. A formula would be 3x - 5 = 16, for instance. When this equation is solved, we discover that the value of the variable x is 7.
\($$\left[\begin{array}{c}y=3 x+2 \\y=-2 x+2\end{array}\right]$$\)
Substitute y=-2 x+2
[-2 x+2=3 x+2]
Isolate \($\mathrm{x}$\) for \($-2 x+2=3 x+2: \quad x=0$\)
Fory =-2 x+2
Substitute x=0
\(y=-2 \cdot 0+2\)
Simplify
y=2
The solutions to the system of equations are: y=2, x=0.
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daniel uses a 20.00 bill to purchase an item that costs d dollars. Write an equation to represent the amount of chnage c that he should receive?
Answers
Answer:
c= 20.00-d
Step-by-step explanation:
Checking my understanding Is it correct to say that :
a-) The Lorentz factor when I want to see an event from another frame. So, the instead of calculating t I will need to know t' which is t'=lambda. t.....Otherwise I could just say that t=x/v
b)When talking abou decay, before and after. Before, the energy is E0=m0c^2. After, E=lambda*E0.... Why do I add the Lorentz factor after the decay. ( for a pion decaying in two photons.
Answers
a) The Lorentz factor, γ, relates the time in one frame (t') to the time in another frame (t) as t' = γt when observing an event from a different frame.
b) In decay processes, the energy of a particle after decay (E) is related to the initial energy (E0) by E = λE0, where λ represents the Lorentz factor. The Lorentz factor incorporates relativistic effects and ensures conservation of energy in the decay.
a) In special relativity, the Lorentz factor (γ) is used to relate the time measurements between two reference frames moving relative to each other. The time dilation equation is given by t' = γt, where t' is the time interval observed in the moving frame, t is the time interval observed in the rest frame, and γ is the Lorentz factor. So, if you want to calculate the time interval in a different frame, you need to multiply the time interval in the rest frame by the Lorentz factor.
b) In the context of particle decay, the energy-momentum relation in special relativity is given by E\(^2\) = (pc)\(^2\) + (m0c\(^2\))\(^2\), where E is the energy, p is the momentum, m0 is the rest mass, and c is the speed of light. When a particle decays, the total energy and momentum must be conserved. After the decay, the resulting particles will have their own energies and momenta. The Lorentz factor is introduced to account for the relativistic effects and ensure energy-momentum conservation. The factor λ in E = λE0 represents the energy fraction carried by the resulting particles compared to the initial rest energy E0. It captures the changes in energy due to the decay process and the relativistic effects involved.
So, in summary, the Lorentz factor is used to account for time dilation and relativistic effects, while in particle decay, it is used to relate the energy before and after the decay process, ensuring energy-momentum conservation in accordance with special relativity.
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Write the standard equation of the circle.
I’ll give brainliest!
Answers
Ummmm would 3x+4 be positive on a graph
Answers
Answer:
Part of the time
Step-by-step explanation:
This is a linear line, meaning it is an infinite straight line. Part of the time it will be more than 0, part of the time it will be less than 0.
Answer:
Yes there would be a positive correlation on a graph.
Step-by-step explanation:
Say we use 0 as our X value. We get 4 as our Y value. Another example we can use is 10. We get 34 as our Y intercept.
Please answer these! You only have to answer A, B,C, or D.
Answers
I would say option B
10.The school needs to purchase a new refrigerator for student rewards. Lowes and Sears have the model
that the school would like to purchase. Lowes is having a 15% off sale and Sears is having a 10% off
sale with free delivery. If the original price at both stores is Lowes is $700, which is the better buy if
there is a $25 for delivery from Lowes?
Answers
identify the slope of the line in the graph below:a slope=5b slope=undefined c slope=0d slope=1
Answers
Given the vertical line, the slope of a straight line is expressed as;
\(m\text{ = }\frac{y_2-y_1}{x_2-x_{1_{}}}\)From the line, we can choose any two coordinates, using the coordinates (5, 0) and (5, 5)
x1 = 5, y1 = 0, x2 = 5 and y2 = 5
Substitute into the formula as shown;
\(\begin{gathered} m\text{ = }\frac{5-0}{5-5} \\ m\text{ = }\frac{5}{0} \\ m\text{ =}\infty \end{gathered}\)Any value divided by zero always tends to infinity. Hence the slope of the line is undefined.
Note that the slope of any vertical line does not exist.
if the woman and a man with normal clotting function have children, what is the probability of their children exhibiting hemophilia a?
Answers
A man who has hemophilia and a woman who is a carrier has:
a 25% (one in four) chance of having a son with hemophiliaa 25% chance of having a son with normal blood clottinga 25% chance of having a daughter who is a carriera 25% chance of having a daughter who has hemophiliaA hemophilia carrier is what?
Both an X chromosome from the mother and an X chromosome from the father are passed down to a daughter. Let's say the gene for typical blood coagulation is present on her mother's X chromosome. Let's say her father's X chromosome carries the hemophilia gene.
Since the normal blood clotting gene from the mother is dominant, the daughter won't get hemophilia. The hemophilia gene's instructions cannot be transmitted because of this.
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PLZ help stuck on three
Answers
Answer:
x=4
h=8
r=3
Step-by-step explanation:
64/8=8
24/6=4
27/9=3
hope this helps
The future value of $900 saved each year for 10 years at 8 percent. (round time value factor to 3 decimal places and final answer to 2 decimal places.)
Answers
The future value of $900 saved each year for 10 years at 8 percent is approximately $12,585.90.
To calculate the future value, we can use the formula for the future value of an ordinary annuity:
FV = P * ((1 + r)^n - 1) / r,
where:
FV is the future value,
P is the annual payment or deposit ($900 in this case),
r is the interest rate per compounding period (8% or 0.08),
and n is the number of compounding periods (10 years).
Substituting the given values into the formula:
FV = 900 * ((1 + 0.08)^10 - 1) / 0.08,
FV ≈ $12,585.90.
Therefore, the future value of saving $900 each year for 10 years at an 8% interest rate is approximately $12,585.90.
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I will mark you as the brainiest if you get this correct
Thx so much xxx
Answers
Answer:
30:24
Step-by-step explanation:
5 + 4 = 9
Divide 54 by 9
Then Multiply by 6.
Hope it helped.
To make a shade of green called “Jasper Green," mix 4 quarts
of green paint with 2/3 cups of black paint.
How much green paint should be mixed with 4 cups of black
paint to make the same shade?
(Please help me before I get in trouble)
Answers
Answer: use a Calculator
Step-by-step explanation: really sorry if being mean and rude
Complementary Angles have a sum of
degreeS.
Answers
Answer:
Sum is equal to 90 degrees
Answer: Complimentary angles have a sum of 90 degrees.
Step-by-step explanation:
3) In recent years, a growing array of entertainment options competes for consumer time. By 2004 , cable television and radio surpassed broadcast television, recorded music, and the daily newspaper to become the two entertainment media with the greatest usage (The Wall Street Journal, January 26, 2004). Researchers used a sample of 10 individuals and collected data on the hours per week spent watching cable television and hours per week spent listening to the radio. Use a .05 level of significance and test for a difference between the population mean usage for cable television and radio.
Answers
A study conducted in 2004 examined the usage of cable television and radio among 10 individuals to determine if there was a significant difference in the average hours spent on each medium. Using a significance level of 0.05, statistical analysis was performed to test for a disparity between the population mean usage of cable television and radio.
The researchers collected data on the number of hours per week spent watching cable television and listening to the radio from a sample of 10 individuals. The objective was to determine if there was a significant difference in the average usage between cable television and radio, considering the increasing competition among various entertainment options.
To test for a difference between the population mean usage for cable television and radio, a statistical hypothesis test was conducted. The significance level (α) of 0.05 was chosen, which means that the results would be considered statistically significant if the probability of obtaining such extreme results by chance alone was less than 5%.
The test compared the means of the two samples, namely the average hours spent watching cable television and listening to the radio. By analyzing the data using appropriate statistical techniques, such as a two-sample t-test, the researchers determined whether the observed difference in means was statistically significant or could be attributed to random variation.
After conducting the hypothesis test, if the p-value associated with the test statistic was less than 0.05, it would indicate that there was a significant difference between the population mean usage of cable television and radio. Conversely, if the p-value was greater than 0.05, there would be insufficient evidence to conclude a significant disparity.
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Given that P(A|B)=0.22 and P(B)=0.46, what is P(A AND B)?
Round your answer to three decimal places.
Answers
P(A AND B) is approximately 0.101 (rounded to three decimal places).
Conditional probability is defined as the likelihood of an event or outcome occurring, based on the occurrence of a previous event or outcome. Conditional probability is calculated by multiplying the probability of the preceding event by the updated probability of the succeeding, or conditional, event.
To find P(A AND B), we can use the conditional probability formula:
P(A AND B) = P(A|B) * P(B)
Given:
P(A|B) = 0.22
P(B) = 0.46
Plugging in the values:
P(A AND B) = 0.22 * 0.46
Calculating the result:
P(A AND B) = 0.1012
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For one journey from London to Marseille, the ratio number of adults: number of children = 11: 2. There were 220 adults in total on this journey. All of the children and 70% of the adults paid the standard fare. The remaining adults paid the premier fare. Calculate the total of the fares paid by the adults and the children.
Answers
Answer: 174
Step-by-step explanation: ok so we divide 220 by 11 to get 20 and times that by two to get 20 children on this journey then see that all children paid and 70 percent of adults so 70 percent of 220 is 154 and then 154 + 20 is 174 so thats the number of fares paid
What is the estimated value of 2v12 . 3V5 / V30 . V36
Answers
Answer:
the correct answer is b and I know this because I just had it
question 6 options: if a cell phone tower is 24 meters tall and casts a shadow 45 meters long, then how long of a shadow will be cast by a nearby marble column that is 8 meters tall?
Answers
If a cell phone tower is 24 meters tall and casts a shadow 45 meters long, then 15 m long of a shadow will be cast by a nearby marble column that is 8 meters tall.
A Cell phone tower is 24 meters tall.
Casts of a shadow is 45 meters long.
A nearby marble column that is 8 meters tall.
We have to determine the how long of a shadow will be cast by a nearby marble column.
Since, the triangle △PQR∼△MNO
So from the diagram
MN/PQ = ON/RQ
8/24 = x/45
Multiply by 45 on both side, we get
x = 8/24 × 45
x = 360/24
x = 15
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PLEASE BE FAST!!! Based on the table, what is the length of a picture that has a width of 18 inches?
A 36 inches B 42 inches C 54 inches D 90 inches
Answers
Answer:
Step-by-step explanation:
Theres no picture
Answer:
Can you show the picture real quick use ctrl shift s to screen shot or window F11
Step-by-step explanation:
What is the coefficient of 3x²?
Answers
So on solving the provided question we can say that here, coefficient of 3x² is 3
What is the coefficient?A coefficient in mathematics is a polynomial, a series, or the multiplicative coefficient of a particular term in an expression. Typically numeric, however any expression is permitted. The term "parameter" can also refer to the coefficients themselves if they are variables. A number times a variable equals a coefficient. Coefficient examples include: The coefficient is 14 in phrase 14c 14c 14c. The coefficient is 1 for word g. multiplies the variable by this amount. example Given that "z" is a variable and that 6z is the definition of the term, the coefficient is 6. One is the coefficient of the square of x.
here,
coefficient of 3x² is 3
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Can someone help i will give i the brainly answer thing
Answers
Step-by-step explanation:
x-25= 6x-5
-5x = 20
x=-4
Would give you x=30, not sure if this would helps
Find the
measure of X given two triangles:
Answers
Answer:
The measure of angle x is 68°
Step-by-step explanation:
The isosceles triangle has two sides equal, the angle between these two sides is called the vertex angle, the other two angles are called the base angles and they are equal in measures
In the given figure
∵ An isosceles Δ has a vertex angle of measure 68°
∴ The other two angles are equal in measure ⇒ base angles
→ The sum of the measures of the interior angles of a triangle is 180°
∴ The sum of the measures of the base angles = 180° - 68°
∴ The sum of the measures of the base angles = 112°
→ Divide their sum by 2 to find the measure of each angle
∵ The measure of each base angle = 112° ÷ 2
∴ The measure of each base angle = 56°
∵ There are two intersected segments
∴ There is a pair of vertically opposite angles
∵ The other isosceles Δ has a vertex angle of measure x
∵ A base angle of the 1st Δ and a base angle of the 2nd Δ are vertically
opposite angles
∴ They are equal in measure
∴ The measure of the base angle of the 2nd Δ = 56°
∴ The two base angles are equal in measure
∴ The measure of each base angle is 56°
→ The sum of the measures of the interior angles of a triangle is 180°
∵ 56° + 56° + x = 180°
∴ 112° + x = 180°
→ Subtract 112 from both sides
∴ x = 68
∴ The measure of angle x is 68°
What is the value of 2020 divided by 20?
Answers
Answer:
101
Step-by-step explanation:
A tennis ball machine can launch 60 tennis balls in 12 minutes.
At this rate, how many tennis balls can it launch in an hour?
Answers
It's 300 because you divide 60 by 12 which gives you 5, then multiply 60 and 5.
A market sells chicken for $2.99 a pound
Answers
REAL ANSWERS ONLY! 20 points!!
Answers
Answer:
I think the answer is 85.64m
Step-by-step explanation:
tìm tất cả giá trị thực của tham số m để đồ thị hàm số y=x³-mx²+4 cắt trục hoành tại ba điểm phân biệt
Answers
Answer:
실례합니다?
Step-by-step explanation:
질문이 뭔가요??? 이해가 안가요? 어느 언어?