Does anyone know what the answer is ?

The IQ of students has a mean of 110 and an SD of 18. If 43 students are randomly sampled, the probability that the average IQ of this group is greater than 100 is P(Z > (100-110)/(18/√43)).

Given, that the IQ of students has a mean of 110 and SD of 18.

Number of students randomly sampled, n = 43.

The formula to calculate the probability is:

P(Z > (100-110)/(18/√43))

Now, substituting the values in the above formula:

P(Z > (100-110)/(18/√43))= P(Z > -2.365)= 1 - P(Z < -2.365)

This can be obtained by referring to standard normal tables or using a calculator.

Now, P(Z < -2.365) can be obtained by referring to standard normal tables or using a calculator.

Using a calculator, we get P(Z < -2.365) = 0.009 or 0.01 (rounded off to two decimal places).

So, P(Z > -2.365) = 1 - 0.01 = 0.99.

The probability that the average IQ of this group is greater than 100 is 0.99.

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Based on the given data, it is expected that approximately 4 of the next 15 drinks sold will be espressos.

To find the expected number of espressos out of the next 15 drinks sold, we can use the proportion of espressos in the recorded drinks as an estimate.

The proportion of espressos in the recorded drinks is 4 out of a total of 20 drinks, or 4/20 = 0.2. This means that about 20% of the recorded drinks were espressos.

To estimate how many of the next 15 drinks sold would be espressos, we can use the proportion of espressos in the current data.

Out of a total of 20 drinks (1 mocha + 3 macchiatos + 5 Americanos + 7 lattes + 4 espressos), the proportion of espressos is 4/20 = 0.2.

Therefore, we can expect that approximately 0.2 * 15 = 3 of the next 15 drinks sold will be espressos.

So we can expect that three of the next 15 drinks sold will be espressos.

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Answer:

1. ew

2. wait what

3. uhm the name tho

4. Q right?

Answer:

Jjrhrhri4i393i393j3j33

Step-by-step explanation:

J5jjt. Hthtbht

Answer:

game c

Step-by-step explanation:

because the slope went up more on level 2 during game c then any other game

Step-by-step explanation:

The cube have 6 sides.

The 2 sides are base surface and the other 4 are lateral surface.

A=4L

4A=4❨4L)

4A=16L

4A=16(2 3/4)

4A=16(11/4)

4A=4(11)

4A=44

so the lateral surface is 44

Answer:

First, we have to find the LCM of 12 and 8 which would be 24. Since we have to multiply 8 by 3, and 12 by 2, then the shortest height would be two 12-inch boxes, and three 8-inch boxes.

Step-by-step explanation:

PLEASE MARK ME AS BRAINLIEST I REALLY WANT TO LEVEL UP

Answer:

I think answer is

5.X+11

A customer would  be charged $ 52 for an international phone call that started at 9:35 p.m. and ended at 11:15 p.m. the same day.

Charge for first 5 charged = $ 4.50

Charge for additional time = $ 0.50 per minute

Starting time = 9:35 p.m.

End time = 11:15 p.m.

Total minutes = 100 minutes

Total charge = 4.50 + (95 x 0.50)

                  = 4.50 + 47.50

                  = 52.00

Hence, a customer would  be charged $ 52 for an international phone call that started at 9:35 p.m. and ended at 11:15 p.m. the same day i.e. for 100 minutes.

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From Joey's first 14 quiz grades in a marking period, the mean of Joey's quiz grades is approximately 82.857.

To calculate the mean of a set of numbers, you sum up all the numbers and divide the sum by the total count of numbers. In this case, we have Joey's first 14 quiz grades: 86, 84, 91, 75, 78, 80, 74, 87, 76, 96, 82, 90, 98, and 93.

Using the formula, we add up all the grades:

86 + 84 + 91 + 75 + 78 + 80 + 74 + 87 + 76 + 96 + 82 + 90 + 98 + 93 = 1160.

Next, we divide the sum by the total count of grades (14):

1160 / 14 = 82.857.

To check this result using "I-Var Stats" on a calculator, enter the grades into a list and use the statistical function to calculate the mean.

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After deducting the amounts for Federal tax, Social Security, and other deductions, the net pay for working 40 hours at an hourly wage of $8.95 is $276.61. Option A.

To calculate the net pay, we need to subtract the deductions from the gross pay.

Given:

Hours worked = 40

Hourly wage = $8.95

Federal tax deduction = $35.24

Social Security deduction = $24.82

Other deductions = $21.33

First, let's calculate the gross pay:

Gross pay = Hours worked * Hourly wage

Gross pay = 40 * $8.95

Gross pay = $358

Next, let's calculate the total deductions:

Total deductions = Federal tax + Social Security + Other deductions

Total deductions = $35.24 + $24.82 + $21.33

Total deductions = $81.39

Finally, let's calculate the net pay:

Net pay = Gross pay - Total deductions

Net pay = $358 - $81.39

Net pay = $276.61

Therefore, the net pay for 40 hours worked at $8.95 an hour with deductions for Federal tax of $35.24, Social Security of $24.82, and other deductions of $21.33 is $276.61. SO Option A is correct.

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Note the correct and the complete question is

What is the net pay for 40 hours worked at $8.95 an hour with deductions for Federal tax of $35.24, Social Security of $24.82, and other deductions of $21.33?

A.) $276.61

B.) $326.25

C.) $358.00

D.) $368.91

The correct response is B. 8. The largest of these three integers is 8.

Zero, a positive natural number, and a negative integer denoted by a minus sign are all examples of integers. The negative numbers are the inverse additions of the comparable positive numbers. 0 is an integer because it may be expressed as a full number with no remainder. True. Whole numbers are defined as 0, 1, 2, 3, 4, and so forth. Positive integers are produced when two positive numbers are added as opposed to two negative integers, which results in a sum with a negative sign. The outcome of subtracting two separate signed integers, with the sign of the result matching that of the larger number, is always subtraction.

Let the three consecutive integers be x,(x+1),(x+2)

About the issue, we have

4x=3(x+2)

∴4x=3x+6

∴4x−3x=6

∴x=6

The biggest number will be (x+2)=6+2=8

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The smallest of the three consecutive integers is 6. The largest of these integers is 8. Therefore, the answer is B. 8.

The problem involves finding three consecutive integers such that four times the smallest is three times the largest. To solve the problem, we first let x be the smallest integer. Then, the next two consecutive integers are x+1 and x+2. Using the given information, we can set up an equation and solve for x. Simplifying the equation yields x=6, which means the three consecutive integers are 6, 7, and 8.

Let's call the smallest of the three consecutive integers "x". Then, the next two consecutive integers are x+1 and x+2.

From the given information, we can set up the following equation:

4x = 3(x+2)

Simplifying and solving for x, we get:

x = 6

Therefore, the three consecutive integers are 6, 7, and 8, and the largest of these three integers is 8. So, the answer is:

B. 8

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Answer:

Step-by-step explanation:

To find the limit using L'Hôpital's Rule, we differentiate the numerator and denominator separately until we obtain an indeterminate form.

a) limx→0​ xln(x^2)/ex

Taking the derivative of the numerator and denominator, we have:

limx→0​ (ln(x^2) + 2x/x) / ex

As x approaches 0, ln(x^2) and 2x/x both tend to 0, so we have:

limx→0​ (0 + 0) / ex

This simplifies to:

limx→0​ 0 / ex = 0

Therefore, the limit is 0.

b) limx→∞​ xln(x^2)/ex

Taking the derivative of the numerator and denominator, we have:

limx→∞​ (ln(x^2) + 2x/x) / ex

As x approaches infinity, ln(x^2) and 2x/x both tend to infinity, so we have an indeterminate form of ∞/∞.

Applying L'Hôpital's Rule again, we differentiate the numerator and denominator:

limx→∞​ (2/x) / ex

Simplifying further, we have:

limx→∞​ 2/(xex)

As x approaches infinity, the denominator grows much faster than the numerator, so the limit tends to 0:

limx→∞​ 2/(xex) = 0

Therefore, the limit is 0.

L'Hôpital's Rule is a powerful tool in calculus for evaluating limits involving indeterminate forms, such as 0/0 or ∞/∞. It states that if the limit of the ratio of two functions of x is of an indeterminate form, then the limit of the ratio of their derivatives will give the same result. In both cases, we applied L'Hôpital's Rule to evaluate the limits by taking the derivatives of the numerator and denominator. The first limit, as x approaches 0, resulted in a simple calculation where the denominator's exponential term dominates the numerator, leading to a limit of 0. The second limit, as x approaches infinity, required multiple applications of L'Hôpital's Rule to simplify the expression and determine that the limit is also 0. L'Hôpital's Rule is a useful technique for resolving indeterminate forms and finding precise limits in calculus.

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In the special right triangle, x has a value of √3/2

A special right triangle is a right triangle with some regular feature that makes calculations on the triangle easier, or for which simple formulas exist. For example, a right triangle may have angles that form simple relationships, such as 45°–45°–90°. This is called an "angle-based" right triangle.

To find the value of x, we should take into consideration that two of the sides of the triangle are equal to each other.

Using Pythagoras theorem;

\((\sqrt{3}) ^2 = x^2 + x^2\\3 = 2x^2\\x^2 = \frac{3}{2} \\x = \sqrt{\frac{3}{2} }\)

The value of x in the triangle is √3/2

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Answer:

D

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - x + 4 ← is in slope- intercept form

with y- intercept c = 4 → D

Answer: $118.00

Step-by-step explanation:

Answer:

18.8 I'm not sure though

Answer:

D. I and II only

Step-by-step explanation:

Give:- C= 5/9( f - 32 )

--> F = 9/5c + 32

(I) If F' = F + 1

C' = 5/9( F' - 32)

C' = 5/9( F - 32) + 5/9 x 1

C' = C + 5/9

The temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of 5/9 degree Celsius

THEREFORE, STATEMENT | IS TRUE.

(II) If C'= C + 1

F' = 9/5C' + 32

F' = ( 9/5C + 32 ) + 9/5

F' = F + 9/5

F' = F + 1.8

The temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit.

THEREFORE, STATMENT || IS TRUE

(III) If F' = F + 5/9

C' = 5/9 (F' - 32)

C' = 5/9 ( F - 32 ) + 5/9 x 5/9

C' = C + 25/81

The temperature increase of 5/9 degrees Fahrenheit is equivalent to a temperature increase of 25/81 degree Celsius.

THEREFORE, STATEMENT ||| IS FALSE

75% of the beads are green in color.

percentage, a relative value indicating hundredth parts of any quantity.

Given that Chase ordered a set of beads

He received 4,000 beads in all.

3,000 of the beads were green.

We need to find the  percentage of the beads were green of 4000.

x/100×4000=3000

40x=3000

Divide both sides by 40

x=75%

Hence, 75% of the beads are green in color.

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Answer:

Step-by-step explanation:

I had this exact question and I figured it out.

the answer is: P(police officer and chooses car)

In order to get this answer I did the P(police officer) X P(choosing car)

It ended up being 36/45 X 15/45. Which is equal to around .2666667.

Now you take the Intersection of police officer and chooses car and you divide it by 45. That value on the chart is 12.

lucky enough, the product of 36/45 and 15/45 is equal to 12/45.

So 0.8 X 0.33 = .26

.26 = .26

Answer:

answer is P(police officer and chooses car)

Step-by-step explanation:

the probability of P(policer officer) and P(choose a car) are independent probabilities ( they are not overlapping probabilities)

Answer:

∠ LHJ = 55°

Step-by-step explanation:

Consecutive angles in a parallelogram are supplementary, sum to 180° , so

∠ LHJ + ∠ KLH = 180° , that is

∠ LHJ + 125° = 180° ( subtract 125° from both sides )

∠ LHJ = 55°

To convert from gram per cubic centimeter to pounds per cubic inch you divide by 453,6 and multiply for 16,387

It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.

To solve this problem the we have to convert the units with the given information.

1 pound is equal to 453,6 grams and 1 cubic inch is equal to 16,387 cubic centimeter, so to convert (g/cm3) to (lb/in3) you need to divide the value for 453,6 and then multiply for 16,387:

x value (g/cm3) * (1 lb/ 453,6 g) * (16,387 cm3/ in3) = x value lb/in3

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Answer:

108 associative

Step-by-step explanation:

Null hypothesis: No statistically significant relationship between stock splits and the value of shares held

Alternative Hypothesis: Statistically significant relationship between stock splits and the value of shares held

Probability of the shares held being worth

The null and alternative hypotheses are as follows:Null Hypothesis (H0): There is no statistically significant relationship between stock splits and the value of shares held.Alternative Hypothesis (Ha): There is a statistically significant relationship between stock splits and the value of shares held.The probability that the shares held will be worth more after the split can be determined through statistical analysis. The null hypothesis assumes that there is no relationship between stock splits and the value of shares held, while the alternative hypothesis suggests that there is a statistically significant relationship between the two variables.Therefore, the probability of the shares held being worth more after the split is based on the results of the statistical analysis of the null and alternative hypotheses.

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An example of matrices A, B, and C that fit the given conditions are:

A = | 1 2 |
| 3 4 |

B = | 5 6 |
| 7 8 |

C = | 9 10 |
| 11 12 |

Even though B does not equal C and A does not equal 0, the product of AB and AC are the same:

AB = | 1*5 + 2*7 1*6 + 2*8 |
| 3*5 + 4*7 3*6 + 4*8 | = | 19 22 |
| 43 50 |

AC = | 1*9 + 2*11 1*10 + 2*12 |
| 3*9 + 4*11 3*10 + 4*12 | = | 31 34 |
| 69 78 |

As you can see, the product of AB and AC are the same, even though B does not equal C and A does not equal 0. This is an example of how matrices can have the same product even if they are not the same matrix.

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======================================================

Explanation:

The general quadratic ax^2+bx+c = 0 has these properties

For more information, check out Vieta's formulas.

If we flip the bx term to -bx, thereby getting ax^2-bx+c = 0, then we have these properties

We're told the sum and product of the roots are the same

b/a = c/a

b = c

Example:

The equation x^2-10x+10=0 has the sum of the roots equal to 10, and the product of the roots is also 10. You can use the quadratic formula to confirm this.

Answer:

12

Step-by-step explanation:

good right? if not then your question was wrong

The disadvantage of buying "used-car" from "private-seller" is : (a) It can be expensive than dealership can offer, (b) It may have problems seller did not disclose, (c) It does not come with warranty, the correct option is (d) All the above.

Option (a) : It may be more expensive than a dealership can offer: Private sellers may price their used-cars higher than what a dealership can offer. Dealerships often have the advantage of bulk purchasing, negotiation power, and the ability to offer financing options that can make their prices more competitive.

Option (b) : It may have problems the seller did not disclose: When buying from a private seller, there is a risk that the seller may not disclose all the problems or issues with the vehicle.

Option (c) : It does not come with a warranty: Unlike buying from a dealership, where used cars often come with warranties or extended warranty options, purchasing from a private seller does not include any warranty coverage. This means that if any mechanical problems arise after purchase, the buyer will be responsible for repair costs.

Therefore, the correct option is (d).

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The given question is incomplete, the complete question is

One potential disadvantage to buying a used car from a private seller is:

(a) It may be more expensive than a dealership can offer

(b) It may have problems the seller did not disclose

(c) It does not come with a warranty

(d) All the above

Answer:

A=31 MILLION b=135%c=235%

Step-by-step explanation:

Answer:

a =  

✔ 31 million

31

23

≈ 1.347

b ≈  

✔ 135%

c ≈  

✔ 235%

Step-by-step explanation:

Answer:

5 * sqrt(3)

Step-by-step explanation:

The sine of 60 degrees is equal to x/10 because x is opposite to it and 10 is the hypotenuse. Since the sine of 60 degrees is equal to sqrt(3)/2, sqrt(3)/2 = x/10. Because 5sqrt(3)/10 = sqrt(3)/2, 5sqrt(3)/10 = x/10 and therefore 5sqrt(3) = x.