3ASAP Activity 2:1. A concerned citizen group claims that 45% of the people in city A support making beersillegal. You decide to test this claim and ask random sample of 200 people on the concernedcity whether or not they support making beers illegal. Of the 200 people, 49% support thisbill. At 0.05 significance level, is there enough evidence to support this claim?: vtivitaaHo:21sd yHa: hoqque A viio ni slqooq adt to 2 terdt amisla quong naxitio bsmoonoo AIboroonos orh no slqosq 00So siqmsz mobnsı den bne misio zids iest ot obiosb uoY lagolieid hogque ofet siqooq 00h adt 10 legslli a1o6d gnidam hoqque yardi jon 1o Toritordw vtioDIAHd tho olootion A total

Answered: Image /qna-images/answer/8e7891e2-4ed9-4ec6-a0b7-0f5282e79a4a.jpg

Answered: Activity 2! 1. A concerned citizen…

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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16.Regarding the following p-values, for which ones the null hypothesis H0 will be rejected at alpha = .01 level? Group of answer choices p= .03 p=.05 p= .003 p= .3
31% of all pygmy softshell toises have stripes on their shells. A herpetologist in Cititon collects a sample of 28 pygmy softshell tortoises and finds that 8 of them have stripes on their shells. Is there enough evidence to conclude, at a significance of alpha=0.05, that the proportion of pygmy softshell tortoises in Cititon with stripes on their shells is less than 31%? What is the claim? What is the null hypothesis? What is the alternative hypothesis? What is the test statistic? What is/are the critical value(s)? Do we reject the null hypothesis? What conclusion do we draw? What is the P-value for the problem above?
In low-speed crash tests of five cars, the repair costs were computed for a factory authorizedrepair and an independent repair workshop. The results are listed in Table 2. Is there sufficientevidence to support the claim that the independent workshop has lower repair costs? Use a 0.01significance level.Table 2 car 1 2 3 4 5 authorized repair centre X1 RM797 RM571 RM904 RM1147 RM418 independent workshop X2 RM523 RM488 RM875 RM911 RM297 D=X1 - X2 274 83 29 236 121 D2 = (X1 -X2)2 75076 6889 841 55696 14641
A sample of men and women who had passed their driver's test either the first time or the second time were surveyed, with the following results: Results of the driving testGender First time Second timeMen 126 211Women 135 178a) Do these data suggest that there is a relationship between gender and the passing of their driver’s test from which the present sample was drawn? Let alpha=.05
If, in a one-tail hypothesis test where H0 is only rejected in the upper tail, the p-value=0.6792 and ZSTAT=−0.47,what is the statistical decision if the null hypothesis is tested at the 0.07 level of significance? What is the statistical decision? Since the p-value is Less than or Greater than or equal to a= , Reject , Do not reject H0.
Q.6.1 A national publishing house claims that 37% of all weekly magazine readers in South Africa read their publication. Test this claim at the 1% significance level, if a survey found that 140 out of a random sample of 400 magazine readers said that they read the relevant publication. Q.6.2 The CEO of a large financial institution claims that, on average, their clients invest more than R45 000 per year in a particular portfolio. Test this claim at the 5% significance level if it was found that a sample of 21 clients invested an average of R44 500 in the portfolio over the last year, with a standard deviation of R5 500.
Following is the rating of marketing aggressivity (X) and sales performance (Y) of 8 sales staffs in Glovis Co in the past year: Table Attached Question: What is the hypothesis of the study?
1. What is the null hypothesis?2. What is the alternativehypothesis?3. What is X2 value?4. What is the decision (use a = 0.05)?5. Interpret the data
The test statistic of z=2.19 is obtained when testing the claim that p>0.1. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of α=0.05, should we reject H0 or should we fail to reject H0?
Q.8.1 A large manufacturing company claims that more than 88% of its customers are fullysatisfied with the company’s products. Test this claim at the 5% significance level, if asurvey found that 360 out of a random sample of 400 of the company’s customerssaid that they were fully satisfied with the company’s products.Q.8.2 The CEO of Global Investment Funds claims that, on average, clients leave theirinvestment funds with the company for a period of at least 56 months.Test this claim at the 10% significance level, if it was found that a sample of 29 clientsleft their investment funds with the company for an average period of 58.85 months,with a standard deviation of 3.75 months.Q.8.3 A shop owner claims that on average, his shop has a daily turnover of R75 000. Testthis claim at the 5% significance level, if the average daily turnover for a sample of 88days was R71 500. Assume a population standard deviation of R4 450.
What are the approximate numbers of participants needed for each of the following planned studies to have 80% power, assuming equal numbers in the two groups and all using the 0.05 significance level? (Be sure to give the total number of participants needed, not just the number needed for each group.) Expected Means Study M1 M2 Expected SPooled Tails (a) 106.0 122.4 82.0 1 (b) 42.7 17.1 32.0 2 (c) 10.0 8.8 2.4 1 (d) 477.0 502.0 50.0 2 Approximate Number of Participants Needed in Each Group (Assuming Equal Sample Sizes) for 80% Power for the t Test for Independent Means, Testing Hypotheses at the 0.05 Significance Level Effect Size Small (0.20) Medium (0.50) Large (0.80) One-tailed 310 50 20 Two-tailed 393 64 26
3. A researcher is testing a two-tailed null hypothesis at the p < .01 level with df = 45. What critical value would she or he use? Justify your answer

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