How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

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Answer 1

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 8.2, Problem 24AYU

a.

To determine

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

b.

To determine

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

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ged the variance for group 1) Different groups of male stalk-eyed flies were raised on different diets: a high nutrient corn diet vs. a low nutrient cotton wool diet. Investigators wanted to see if diet quality influenced eye-stalk length. They obtained the following data: d Diet Sample Mean Eye-stalk Length Variance in Eye-stalk d size, n (mm) Length (mm²) Corn (group 1) 21 2.05 0.0558 Cotton (group 2) 24 1.54 0.0812 =205-1.54-05T a) Construct a 95% confidence interval for the difference in mean eye-stalk length between the two diets (e.g., use group 1 - group 2).

An article in Business Week discussed the large spread between the federal funds rate and the average credit card rate. The table below is a frequency distribution of the credit card rate charged by the top 100 issuers. Credit Card Rates Credit Card Rate Frequency 18% -23% 19 17% -17.9% 16 16% -16.9% 31 15% -15.9% 26 14% -14.9% Copy Data 8 Step 1 of 2: Calculate the average credit card rate charged by the top 100 issuers based on the frequency distribution. Round your answer to two decimal places.

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Answer 2

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Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 8.2, Problem 24AYU

a.

To determine

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

b.

To determine

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 8.2, Problem 24AYU

a.

To determine

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

b.

To determine

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

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Answer 4

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 8.2, Problem 24AYU

a.

To determine

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

b.

To determine

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 5

Chapter 8.2, Problem 24AYU

a.

To determine

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

b.

To determine

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Answer 6

Chapter 8.2, Problem 24AYU

a.

To determine

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Answer 7

Chapter 8.2, Problem 24AYU

a.

To determine

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Answer 8

b.

To determine

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Answer 9

b.

To determine

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Answer 10

Expert Solution & Answer

Answer 11

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Answer 12

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Answer 13

Ch. 8.1 - The _____ _____ of the sample mean, x, is the...Ch. 8.1 - Suppose a simple random sample of size n is drawn...Ch. 8.1 - The standard deviation of the sampling...Ch. 8.1 - True or False: The distribution of the sample...Ch. 8.1 - True or False: The distribution of the sample...Ch. 8.1 - True or False: To cut the standard error of the...Ch. 8.1 - A simple random sample of size n = 10 is obtained...Ch. 8.1 - A simple random sample of size n = 40 is obtained...Ch. 8.1 - In Problems 912, determine x and x from the given...Ch. 8.1 - In Problems 912, determine x and x from the given...

How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

Solution Summary: The author explains the sampling distribution of a simple random sample of size n with population proportion p is as follows: the samples must be independent of each other.

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How many more teenagers aged 13-17 does the researcher need to sample if 90% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

How many more adult teenagers aged 13-17 does the researcher need to sample if 95% of all teenagers aged 13-17 have never been prescribed medication for ADHD.

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