Use the following to answer questions 51-54:Ina hypothesis test with hypotheses H:µ=90 and H, : u#90, a random sample of 97elements selected from the population produced a mean of 92.1. Assume that o=20.1, and thatthe test is to be made at the 10% significance level.51. What are the critical values of z?A) -1.28 and 1.28B) -1.645 and 1.645C) -1.96 and 1.96D) -2.33 and 2.3352. What is the value of the test statistic, z, rounded to three decimal places?53. What is the p-value for this hypothesis test, rounded to four decimal places?Should you reject or fail to reject the null hypothesis in this test? (State your an:"reject" or "fail to reject", but don't include the quotation marks.)54.Page 11

Answered: Use the following to answer questions…

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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a. State the Null and Alternative Hypotheses and Choose the appropriate statistical test b. Determine the Level of Significance and the Critical Value c. Solve for the computed value
consider the following hypothesis test H0: u = 22 H a :u (canceled =) 22 A sample of 75 is used and the population standard deviation is 10 . Compute the -value and state your conclusion for each of the following sample results. Use a=0.01. Round value to two decimal places and -value to four decimal places. Enter negative values as negative numbers. a. (mean)=23 z-value p-value b. (mean)= 25.1 z-value p-value c. (mean)=20 z- value p-value
Consider the following hypotheses: Hg: H 2 160 НА: и < 160 The population is normally distributed. A sample produces the following observations: 152 138 151 144 151 142 Conduct the test at the 1% level of significance. (You may find it useful to reference the appropriate table: z table or table) a. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round final answer to 2 decimal places.) Test statistic
6
): A null hypothesis is that the average blood pressure for adult is 70. For a sample of 60 adults, the average blood pressure is 71.8. A significance test is done, and the p-value is 0.02 what is the most appropriate conclusion? O A. Reject the hypothesis that the sample average is 70 O B. Reject the hypothesis that the population averages 70 O C. Conclude that the population average is 70 O D. Conclude that the population averages 71.8 O E. None of these
a. State the null and research hypotheses: H0: H1: b. Is the F statistic for Levene’s test significant? c. What is the alpha level for the t-test? d. Obtained t-value: e. Significance level for the t-test: f. Decision rule: If the significance level of the obtained t statistic is greater than ____ (alpha level), we fail to reject the null hypothesis. If the significance level of the obtained t statistic is equal to or less than ____ (alpha level), we reject the null hypothesis. g. Decision: Since the significance level of the obtained t statistic is _____ and it is __________(greater or less) than ____ (alpha level), we ________(reject or fail to reject) the null hypothesis. h. Interpretation/conclusion:
Assume a significance level of α=0.1 and use the given information to complete parts (a) and (b) below. Original claim: The mean pulse rate (in beats per minute) of a certain group of adult males is 70 bpm. The hypothesis test results in a P-value of 0.0025. a. State a conclusion about the null hypothesis. (Reject H0 or fail to reject H0.) Choose the correct answer below. A. Fail to reject H0 because the P-value is less than or equal to α. B. Reject H0 because the P-value is less than or equal to α. C. Reject H0 because the P-value is greater than α. D. Fail to reject H0 because the P-value is greater than α. b. Without using technical terms, state a final conclusion that addresses the original claim. Which of the following is the correct conclusion? A. The mean pulse rate (in beats per minute) of the group of adult males is 70 bpm. B. There is sufficient evidence to warrant rejection of the claim that the…
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