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e Wardman-Google Chrome Secure , https//www ent PlayerTest.aspx?testld 1612786558centerwin MAT205CRN20406SUMMER2017 Quiz: Chapter 7 Quiz Submit C This Question: 1 pt I 20of23(14 complete) This Quiz: 23 pls poss Question Hep a) Write the claim mathematically and identity o and H, )Find the critical vabet'o) and idenily the reijection regons) (e) An envi n mental agency recently da med more than20% o consumers have stopped buying a certain product because ofe product At a-001, do you have enough evidence to support the claim? Find the standardized test statisic (d) Decide whether to reject or fail to reject the null hypothesis a certain product because of environmental concems in a or mental co cers 'concerns", a random sample of 1040 consumers, you find 40% have stoppedbyngth (a) Which of the folowing comectly states H and H,? H P028 H p028 H. p.028 H P028 H, pso28 H p2028 (bj What is (are) the critical value(s) z9? Use a comma to separate answers as needed Round to two decimal places as needed ) Which of the following graphs has the rejection region)s) shaded comectly O A. OB. O C. Cick to select your answerjs)Explanation / Answer
a.
Claim is alternate hypothesis
Ha: p >.28
Exactly opposite that is Ho
Ho: p <= .28
A is right therefore
b.
The rejection region is area till .01/2 = .005 and beyond 1-.005 = .995
c.
Zo = p-p0/sqrt(p0*p0'/n)
p = x/n = .40
n=1040
Zo = (.40-.28)/sqrt(.28*.72/1040) = 8.61
d.
As Z0>3. we have pvalue<.015, < alpha = .01
p-value is less than alpa, reject H0 and say that claim of agency is right. The proportion is indeed more than .28 and agency' claim is right
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