Suppose that you are to conduct the following hypothesis test for matched data:Pr : °HH: Ha + 0%3DFor a sample of 21, it was found that d = 2.2 and sa =3.42. Determine each of the following:!3!The value of the test statistic:For a 0.05, the final conclusion isA. There is enough evidence to say that Ha = 0B. There is not enough evidence to say that ua = 0C. There is enough evidence to say that Hd #0D. There is not enough evidence to say that Ha #0.

Given data : sample size, n =21 sample mean,đ = 2.2 sample standard deviation,sd= 3.42…

Answered: Suppose that you are to conduct the…

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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Proctor & Gamble claims that at least half the bars of lvory soap they produce are 99.44% pure (or more pure) as advertised. Unilever, one of Proctor & Gamble's competitors, wishes to put this claim to the test. They sample the purity of 130 bars of Ivory soap. They find that 54 of them meet the 99.44% purity advertised. What type of test should be run? z-test of a proportion or t-test of a mean The alternative hypothesis indicates a : a. right-tailed test b. left-tailed test c. two-tailed test Calculate the p-value. Does Unilever have sufficient evidence to reject Proctor & Gamble's claim? yes or no
From the table on the image: Construct an appropriate hypothesis test to determine whether or not there is an association between experiencing phenomena such as seeing a ghost and the age group you are in. Write the appropriate null/alternative hypothesis and carry out the test. Use a significance level of α = 0.01.
The director of student services at Oxnard College is interested in whether women are just as likely to attend orientation as men before they begin their coursework. A random sample of freshmen at Oxnard College were asked what their gender is and whether they attended orientation. The results of the survey are shown below: Data for Gender vs. Orientation Attendance Women Men Yes 355 395 No 247 239 What can be concluded at the a = 0.01 level of significance? For this study, we should use z-test for the difference between two population proportions a. The null and alternative hypotheses would be: V p2 Но: р1 that p1 and ul represent the proportion and mean for women and p2 and µ2 represent the proportion and mean for men.) vV (please enter a decimal and note H1: p1 p2 vv (Please enter a decimal) b. The test statistic -1.198 X (please show your answer to 3 decimal places.) c. The p-value = 0.2309 (Please show your answer to 4 decimal places.) d. The p-value is >v e. Based on this, we…
Would you favor spending more federal tax money on the arts? Of a random sample of n1 = 200 women, r1 = 55 responded yes. Another random sample of n2 = 162 men showed that r2 = 60 responded yes. Does this information indicate a difference (either way) between the population proportion of women and the population proportion of men who favor spending more federal tax dollars on the arts? Use ? = 0.05. What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.)(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)
Zenon decided to Investigate whether students at his school prefer name-brand potato chips to generic potato chips. He randomly selected 50 of the 400 students at his school and asked each student to try both types of chips. Zenon wants to perform a test of H0: P = 0.5 versus Ha: P > 0.5, where p = the true proportion of students at his school who prefer name-brand chips. A. Can the observations In the sample be viewed as Independent? Justify your answer. B. Is the sampling distribution of p approximately Normal? Explain your reasoning.
The results of a mathematics exam at JUST university for two classes are as follows: Class 1: (n=32, mean=19, SD=8) and Class 2: (n%36, mean=D6.5, SD=12).we are testing if the means are different What is the z statistic (a=0.05): a. 5.10 b. 4.69 C. 2.08 d. 10.41
A reseacher is analyzing data from a repeated-measures research study. If the researcher ran a related samples/repeated measures t-test to analyze the data, what would the value of SS be for the analysis? Subject 1st 2nd #1 10 11 #2 4 6 #3 7 9 #4 6 5 A. 10 B. 1 C. 4 D. 6
Choose the correct answer.If the P-value of a test of significance is 0.999 then:A. the null hypothesis should be rejected.B. the null hypothesis should not be rejected.C. the alternative hypothesis provides a plausible explanation of the data.D. Both A and C are true.
If the test statistic for a right sided test is z = 1.71, then the p-value isSelect one: A.0.9573 B.0.9564 C.0.0436 D.0.0427
a survey is conducted to compare the proportions of men and women whoaccess their bank statements online. Denoting the population propotions by Pm and Pw, a two-proportion z-test is carried out to test Ho: pm = pw against Ha: pm > pw. The values of the test statistic is found to be z = 0.784, and the p-value for the test is found to be 0.216. Which of the following is the correct interpretation of the p-value? a) given that ha is true, the probability of getting a value of z at least as large as 0.784 is 0.216. b) given that ho is true, the probability of getting a value of z at least as large as 0.784 is 0.216. c) given the results of the survey, the probability that Pm > Pw is 0.216. d) given the results of the survey, the probability that Pm = Pw is 0.216. e) none of the above

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