Question: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population of normal adults. Find the

An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 95% confidence that the sample mean is within 5 IQ points of the true mean. Assume that sigma =12 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation.

The required sample size is ___ . (Round up to the nearestinteger.)

Would it be reasonable to sample this number ofstudents?

A) No. This number of IQ test scores is a fairly

large number.

B) Yes. This number of IQ test scores is a fairly small number.

C) No. This number of IQ test scores is a fairly small number.

D) Yes. This number of IQ test scores is a fairly large number.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

GA: Forecasting Fenway Franks Hot dogs are an integral part of the experience of a Red Sox baseball game in Boston. The hot dogs, or frankfurters, that are sold at the ball park are called Fenway...

1-A real estate investor is considering purchasing a property that could result in multiple outcomes. She antipicates that there is a 45% chance of flipping the property for a net profit of $27,000,...

Reference: Cumulative area to the left of negative z scores 11/8/22, 12:56 AM NEGATIVE z Scores 0 Standard Normal (z) Distribution: Cumulative Area from the LEFT 06 07 .08 .09 .04 .05 -3.50 and .00...

Exercises 1. For 30 randomly selected Rolling Stones concerts, the mean gross earnings is 2.5 million dollars. Assuming a population standard deviation gross earnings of 0.46 million dollars, a)....

Cumulative area to the left of negative z scores 11/8/22, 12:56 AM NEGATIVE z Scores 0 Standard Normal (z) Distribution: Cumulative Area from the LEFT 06 07 .08 .09 .04 .05 -3.50 and .00 .01 .02 .03...

tra Cre X - Final Ex M160 F X Final Ex - X KJMathwa pearson.com/Student/PlayerTest.aspx?canvas_workflow_state=available&canvas_enrollment_state=acti... C Kim Angel Gieng This test: 150 Question 11 of...

Question #7 You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume...

Please answer all parts 1 In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment....

Question #12 In a study of the accuracy of fast food drive-through orders, Restaurant A had 255 accurate orders and 74 that were not accurate. a. Construct a 95% confidence interval estimate of the...

Question #1 You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume...

The W.T. Grant Company was the nations largest retailer until it filed for bankruptcy only one year after it had reported profits of or $20 million for more than ten Consecutive years. Yet cash flow...

Consider the following data on 20 chemical reactions, with Y = chromatographic retention time (seconds) and X = molecular weight (gm/mole). Retention Time and Molecular Weight (n = 20) Name Retention...

If you decrease the number of periods, but keep the pv and fv the same, what happens to the rate of return? ( Assume PMT is $ 0 )

43. Which of the following items in a cash drawer at November 30 is NOT cash? a. Money orders b. Coins and currency c. A customer check dated December 4 d. A customer check dated November 28 e. All...