Question: Hi! I need some help on this confidence interval estimate of the mean wake time in this statistics problem. Thank you very much! A clinical

Hi! I need some help on this confidence interval estimate of the mean wake time in this statistics problem. Thank you very much!

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 15 subjects had a mean wake time of 102.0 min. After treatment, the 15 subjects had a mean wake time of 74.1 min and a standard deviation of 23.8 min. Assume that the 15 sample values appear to be from a normally distributed population and construct a 99% condence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 102.0 min before the treatment? Does the drug appear to be effective? Construct the 99% condence interval estimate of the mean wake time for a population with the treatment. :l min

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!

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...

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 17 subjects had a mean wake time of 103.0min .After treatment, the 17...

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...

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 22 subjects had a mean wake time of 101.0 m After the 22 subjects had a...

help! please! This is all the information needed for the questions. MA275-04 Biostatistics Yasmin Baytaroglu & | 10/14/20 12:35 PM Homework: Sec. 7.2 Save Score: 0 of 1 pt 4 of 9 (2 complete) HW...

1)Here are summary statistics for randomly selected weights of newborngirls: =151, x=31.7hg, s=6.3 hg. Construct a confidence interval estimate of the mean. Use a 95% confidence level. Are these...

Could someone help me with this problem? Thank you in advance! A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 22...

7: A company that produces white bread is concerned about the distribution of the amount of sodium in its bread. The company takes a simple random sample of 100 slices of bread and computes the...

**ONLY 12, 14, 16** Construct the confidence interval estimate of the mean.For number 16 we should find the mean and standard deviation. 7-2 Estimating a 12. Atkins Weight Loss Program In a test of...

Assume that females have pulse rates that are normally distributed with a mean of =74.0 beats per minute and a standard deviation of =12.5 beats per minute. Complete parts (a) through (c) below....

In a certain economy the production function is Y = A(100N - 0.5N2), Where Y is output, A is productivity, and N is total hours worked. The marginal product of labour associated with this production...

Which criteria assume that the project's net cash flows (NCFS) are reinvested at the firm's cost of capital? NPV, IRR, and PI NPV, PI, and discounted PB IRR Conventional PB Read the following...

10. Rational Self-Interest If behavior is governed by rational self-interest, why do people make charitable contributions of time and money?

Marketers who seek to accomplish the strategic goals of marketing communications are: Question 1 3 options: more likely to focus on selling their existing products rather than their new products more...

Suppose that Charlotte King has two stocks, A and B. Let X and Y be random variables of possible percent returns (0%, 5%, 10%, and 15%) for each of these two stocks, with the joint probability...

An investor has $1,000 to invest and two investment opportunities, each requiring a minimum of $500. The profit per $100 from the first can be represented by a random variable X, having the following...

Find the covariance and correlation for the stocks A and B from Example 4.16 with the joint probability distribution in Table 4.7. Table 4.7 Joint Probability Distribution for Random Variables X and...