How did the apple2 device worked

The admissions director at big city university proposed using the iq scores of current students as a marketing tool. the univers

Vika [28.1K]

The complete question is as follows:

The admission directory of Big City University has a novel idea. He proposed using the IQ scores of current students as a marketing tool. The university agrees to provide him with enough money to administer IQ tests to 50 students. So the director gives the IQ test to an SRS of 50 of the university’s 5000 freshman. The mean IQ score for the sample is xbar=112. The IQ test he administered is known to have a σ of 15. What is the 95% Confidence Interval about the mean? What can the director say about the mean score of the population of all 5000 freshman?

Answer: The 95% confidence interval about the mean is $Confidence interval = 107.84 \leq \mu \leq 116.16$ .

The director can say that he is 95% confident that the mean IQ score of the 5000 freshmen lies between 107.84 and 116.16.

We follow these steps to arrive at the answer:

Since the population standard deviation of the IQ test is known, we can use the Z scores to find the confidence interval.

The formula for the confidence interval about the mean is:

$Confidence interval = \overline{X}\pm Z*\frac{\sigma}{\sqrt{n}}$

In the equation above, X bar is known as the point estimate and the second term is known as Margin of Error.

The Critical Value of Z at the 95% confidence level is 1.96.

Substituting the values in the question in the equation above we have,

$Confidence interval = \112\pm 1.96*\frac{15}{\sqrt{50}}$

$Confidence interval = \112\pm 4.157787873}$

$Confidence interval = 107.8422121 \leq \mu \leq 116.1577879$

5 0

2 years ago

(c)

ladessa [460]

Answer:

The changes suggested increase income by 16,000 therefore is a good idea to made the changes

Explanation:

Your Mistake is that fixed expenses should remain constant with a sales increase

Current New

Sales $800,000 $ 912,000

Variable $ 480,000 $ 576,000

Contribution $ 320,000 $ 336,000

Fixed $ 270,000 $ 270,000

Net Income $ 50,000 $ 66,000

7 0

2 years ago

Net loss means expenses is _____ gross profit?

sveticcg [70]

Answer:

net loss means expenses is ____ gross profit?

a. greater than

→b. less than

c. equals

d. none of the above

Explanation:

#Carry On Learning

⤵

Choi Eunbyul <3

3 0

1 year ago

Geneva needs additional capital to launch her business but does not want to share management responsibility with partners. Neith

Talja [164]

Answer:

The answer is: C) S corporation

Explanation:

Geneva should choose an S Corporation. In my opinion she should do it because corporate income, losses, deductions, and credits are passed through to its shareholders, while it can be managed like a normal corporation.

If she chooses a Limited Liability Partnership she would still have to share management responsibility with her partners and C Corporations are heavily taxed. If she had enough money she could start a sole proprietorship business, but she doesn't have enough money.

5 0

2 years ago

CarCut Corporation has been employing the Fixed-Order Quantity model to manage the inventory of its best selling 3D printer. The

vfiekz [6]

Answer: See explanation

Explanation:

The optimal reorder point in units is calculated as the average daily sales unit multiplied by the delivery lead time.

In the question, we're not provided with the annual demand as this is vital in order to know the average daily unit. Therefore, the question is incomplete

7 0

2 years ago