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estimate a population mean u

estimate a population mean u

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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You intend to estimate a population mean u with the following sample. 70.7 65.8 76.2 66.2 51.2 51.6 71.8 63.5 95.5 You believe the population is normally distributed. Find the 99% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place). 99% С.I. %3D Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
Transcribed Image Text:You intend to estimate a population mean u with the following sample. 70.7 65.8 76.2 66.2 51.2 51.6 71.8 63.5 95.5 You believe the population is normally distributed. Find the 99% confidence interval. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place). 99% С.I. %3D Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly more than 0.75. You use a significance level of a = 0.005. Но: р — 0.75 H1:p > 0.75 You obtain a sample of sizen = 317 in which there are 260 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value The p-value is... O less than (or equal to) a greater than a This test statistic leads to a decision to... reject the null O accept the null O fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. There is not sufficient evidence to warrant rejection of the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. O The sample data support the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. There is not sufficient sample evidence to support the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. Question Heln: D Video
Transcribed Image Text:You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly more than 0.75. You use a significance level of a = 0.005. Но: р — 0.75 H1:p > 0.75 You obtain a sample of sizen = 317 in which there are 260 successes. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value The p-value is... O less than (or equal to) a greater than a This test statistic leads to a decision to... reject the null O accept the null O fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. There is not sufficient evidence to warrant rejection of the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. O The sample data support the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. There is not sufficient sample evidence to support the claim that the probability of a true negative on a test for a certain cancer is more than 0.75. Question Heln: D Video
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