A sample mean is 6.7, sample size is 20, andpopulation standard deviation is 0.6 aregiven. Ho: p27.1, H₁: p<7.1 and a significancelevel is 0.05. Use the P-value approach to test thehypothesis.O a.a. z = -2.98; P-value = 0.9986; do not rejectnull hypothesisO b. z= -2.98; P-value = 0.0014; do notreject null hypothesisO c. z = -2.98; P-value = 0.0014; reject nullhypothesisO d. z = -0.67; P-value = 0.2514; do notreject null hypothesis

Answered: Image /qna-images/answer/417c4472-8e48-4387-a7ac-55bbbd4049c6.jpg

Answered: population standard deviation is 0.6…

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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can you answer 26a and b
Determine the test statistic
Assume the average amount of days a patient spends in hospital is believed to be 24 days and a hospital claims that their experience suggests that the average is actually lower. They randomly selected and followed 33 patients and found that the mean number of days was 21.5 with a standard deviation of 7.8. What is the test statistic and your conclusion for α=0.05?A. Test statistic: 1.841 Conclusion: Reject the null hypothesisB. Test statistic: -1.841 Conclusion: Reject the null hypothesisC. Test statistic: 1.841 Conclusion: Not enough evidence to reject the null hypothesisD. Test statistic: -1.841 Conclusion: Not enough evidence to reject the null hypothesis
Q-3) Show all the steps for the problem.
A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics are n = 190, x=5.53, s-1.91. Use a 0.01 significance level to test the claim that the population mean of such ratings is less than 6.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. heret What are the null and alternative hypotheses? OA. Ho: -6.00 H, μ 6.00 Determine de test statistic. (Round to two decimal places as needed.) Determine the P-value. ... OB. Ho: μ=6.00 H₁: μ>6.00 O D. Ho: -6.00 H₁: 6.00 Copyright © 2022 Pearson Education Inc. All rights reserved. Terms of Use a Cop Privacy Policy Permissions ▶11 86°F Next Contact Us insert
Research suggests a link between mothers alcohol consumption with the birth weight of newborns. Random sampke of 100 mothers who drank during pregnancy, average birth weight od their babies is 7.2 lbs. Average birth weight nationwide is 7.8 lbs. And standard deviation is 1.56. Do mothers who drink have babiea that are significantly smaller compared to nationwide? Use alpha = 01. A. State the null abd the research hypothesisB. Identify the critical values of z or t used to define the decision ruleC. Calculate the test statisticD. Report the p-valueE. Report your findings
Use the Statistical Applet: Statistical Significance to simulate the given situation. Suppose you are planning to collect a set of data in an experiment where the null hypothesis states that the population mean will be 1515. You will collect 3030 observations, and you expect the population standard deviation to be 6.56.5. You plan to test at the 0.050.05 level of significance, using a one‑tailed test, that is, testing whether ?<15.μ<15. Identify the values for ?μ, ?α, ?σ, and ?n. ?=μ= ?=α= ?=σ= ?=n=
THE FINALS ANSWERS SHOULD BE IN 3 DECIMAL PLACES
Assume that a sample is used to estimate a population mean u. Find the 99% confidence interval for a sample of size 42 with a mean of 68,6 and a standard deviation of 21.9. Enter your answer as an open- interval (i.e., parentheses) accurate to 3 decimal places. 99% C.I. = The answer should be obtained without any preliminary rounding.
I need help with this please
A sample of 87 body temperatures has a mean of 98.7. Assume that σ is known to be 0.5 oF. Use a 0.05 significance level to test the claim that the mean body temperature of the population is equal to 98.5 oF, as is commonly believed. What is the value of test statistic for this testing? (Round off the answer upto 2 decimal places)
E= Over the years, the mean customer satisfaction rating at a local restaurant has been 65. The restaurant was recently remodeled, and now the management claims the mean customer rating, u, is not equal to 65. In a sample of 32 customers chosen at random, the mean customer rating is 76.2. Assume that the population standard deviation of customer ratings is 22.8. Is there enough evidence to support the claim that the mean customer rating is different from 65? Perform a hypothesis test, using the 0.10 level of significance. (a) State the null hypothesis H, and the alternative hypothesis H,. Ho Aa O

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