A scientist studying babies born prematurely would like to obtain an estimate for the mean birth weight, µ,of babies born during the 24th week of the gestation period. She plans to select a random sample of birthweights of such babies and use the mean of the sample to estimate µ. Assuming that the population of birthweights of babies born during the 24th week has a standard deviation of 2.7 pounds, what is the minimumsample size needed for the scientist to be 99% confident that her estimate is within 0.6 pounds of u?Carry your intermediate computations to at least three decimal places. Write your answer as a whole number(and make sure that it is the minimum whole number that satisfies the requirements).(If necessary, consult a list of formulas.)

Answered: Image /qna-images/answer/7afe1068-874e-45cd-b88a-cddb660852c7.jpg

Answered: A scientist studying babies born…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 25 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.12 oz, and they appear to be from a normally distributed population. If the workers want the filling process to work so that almost all cans have volumes between 12.04 oz and 12.60 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.14 oz. Use the sample data to test the claim that the population of volumes has a standard deviation less than 0.14 oz. Use a 0.01 significance level. Complete parts (a) through (d) below. b. Compute the test statistic. (Round to three decimal places as needed.) c. Find the P-value. Click to select your answer(s). OV 8:46 hp ese backspace 96 6 1 3 4 y e tab enter k d a shift alt ctri ctrl alt USE YOUR SMARTPHONEFOR Reviews Videes Features Specs Support HP Chromebook For work and play. nd play. And play. HD…
A psychologist is studying the self image of smokers, which she measures by the self-image (SI) score from a personality inventory. She would like to estimate the mean SI score, µ, for the population of all smokers. She plans to take a random sample of SI scores for smokers and estimate u via this sample. Assuming that the standard deviation of SI scores for the population of all smokers is 80, what is the minimum sample size needed for the psychologist to be 99% confident that her estimate is within 10 of u? Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.) Explanation Check 2021 McGraw HI Education. All Rights Reserved Terms of Use PrivacyI Accessibility MacBook Air ** FI * FS 23 2$ 2 3 4 5 6. 8. Q W E Y P A S F G K C V B alt alt option command command option .. ..
A psychologist is studying the self image of smokers, which she measures by the self-image (SI) score from a personality inventory. She would like to estimate the mean SI score, μ, for the population of all smokers. She plans to take a random sample of SI scores for smokers and estimate μ via this sample. Assuming that the standard deviation of SI scores for the population of all smokers is 82, what is the minimum sample size needed for the psychologist to be 95% confident that her estimate is within 15 of μ?Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements).
To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a safety engineer conducts braking tests for 35 models of Make A and 35 models of Make B. The mean braking distance for Make A is 42 feet. Assume the population standard deviation is 4.7 feet. The mean braking distance for Make B is 45 feet. Assume the population standard deviation is 4.4 feet. At a = 0.10, can the engineer support the claim that the mean braking distances are different for the two makes of automobiles? Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) rari rz (b) Find the critical value(s) and identify the rejection region(s). The critical value(s) is/are (Round to three decimal places as needed. Use a comma to separate answers as needed.)
Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 18 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.11 oz, and they appear to be from a normally distributed population. If the workers want the filling process to work so that almost all cans have volumes between 11.92 oz and 12.64 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.18 oz. Use the sample data to test the claim that the population of volumes has a standard deviation less than 0.18 oz. Use a 0.025 significance level. Complete parts (a) through (d) below. a. Identify the null and alternative hypotheses. Choose the correct answer below. A.H0: σ≥0.18oz H1: σ<0.18oz B.H0: σ=0.18oz H1: σ≠0.18oz C. H0: σ>0.18 oz H1: σ=0.18oz D.H0: σ=0.18 oz H1: σ<0.18 oz b. Compute the test statistic. χ2= (Round to three decimal places as…
A psychologist is studying the self image of smokers, which she measures by the self-image (SI) score from a personality inventory. She would like to estimate the mean SI score, μ, for the population of all smokers. She plans to take a random sample of SI scores for smokers and estimate μ via this sample. Assuming that the standard deviation of SI scores for the population of all smokers is 90, what is the minimum sample size needed for the psychologist to be 90% confident that her estimate is within 12 of μ?
Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 23 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.12 oz, and they appear to be from a normally distributed population. If the workers want the filling process to work so that almost all cans have volumes between 11.92 oz and 12.52 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.15 oz. Use the sample data to test the claim that the population of volumes has a standard deviation less than 0.15 oz. Use a 0.05 significance level. Complete parts (a) through (d) below. a: Identify the null and alternative hypotheses. b: Identify the null and alternative hypotheses. c: Compute the test statistic. d: What is the P value and what is the correct conclusion.
Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 25 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.11 oz, and they appear to be from a normally distributed population. If the workers want the filling process to work so that almost all cans have volumes between 11.97 oz and 12.65 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.17 oz.Use the sample data to test the claim that the population of volumes has a standard deviation less than 0.17 oz. Use a 0.05 significance level. Complete parts (a) through (d) below, a. Identify the null and alternative hypotheses. Choose the correct answer below. O B. Ho o=0.17 oz H, o0.17 oz H, 0 0.17 oz H o= 0.17 oz b. Compute the test statistic. (Round to three decimal places as needed.)
In the year 2033, Sarai Patterson is a leading traveling nurse. Sarai is interested in reducing the mean recovery time for patients after experiencing a serious injury (assume recovery times are normally distributed). Suppose the mean recovery time is presently 8.6 months. Sarai takes a random sample of 46 patients that have experienced serious injury to participate in a new treatment program and finds the sample mean is 8.1 months and a sample standard deviation of 1.2 months. Using α = 0.05, answer the following questions. a) What is the setup for your null and alternative hypothesis? b) What is the value of the test statistic? c) What is/are the critical value(s)?
Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 21 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.11 oz, and they appear to be from a normally distributed population. If the workers want the filling process to work so that almost all cans have volumes between 11.91 oz and 12.47 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.14 oz. Use the sample data Complete parts (a) through (d) below. test the claim that the population of volumes has a standard deviation less than 0.14 oz. Use a 0.025 significance level. a. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: o = 0.14 oz O B. Ho: o = 0.14 oz H,:o0.14 oz H1: 0 = 0.14 oz O D. Ho: o20.14 oz H:o<0.14 oz b. Compute the test statistic. (Round to three decimal places as needed.) c. Find the P-value. P-value = (Round to four decimal places as…
A psychologist is studying the self image of smokers, which she measures by the self-image (SI) score from a personality inventory. She would like to estimate the mean SI score, µ, for the population of all smokers. She plans to take a random sample of SI scores for smokers and estimate u via this sample. Assuming that the standard deviation of SI scores for the population of all smokers is 85, what is the minimum sample size needed for the psychologist to be 95% confident that her estimate is within 12 of u? Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.)
Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 24 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.12 oz, and they appear to be from a normally distributed population. If the workers want the filling process to work so that almost all cans have volumes between 11.94 oz and 12.46 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.13 oz. Use the sample data to test the claim that the population of volumes has a standard deviation less than 0.13 oz. Use a 0.05 significance level. Complete parts (a) through (d) below. a. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: o = 0.13 oz O B. Ho: o = 0.13 oz H1: o+0.13 oz H1: o 0.13 oz H1: 0 = 0.13 oz O D. Ho: o20.13 oz H1: o<0.13 oz b. Compute the test statistic. x2 = 19.598 (Round to three decimal places as needed.) c. Find the P-value. P-value =…

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS