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Question

ari File Edit View History Bookmarks Window Help mathxl.com Unit 3- Chapters 7-10o Take a Test-Cara Satoskar Z Critical Value Calculator Confi 18SU MAT152-104 Szwecj Online Test: Unit 3 Test - Chapters 7 and 8 only This Question: 1 pt 11 of 26 (24 comp Assume that the significance level is ?: 0.1. Use the given statement and find the P-value and critical value(s). The test statistic of z-1.67 is obtained when testing the claim that p- P-value 0949 (Round to four decimal places as needed.) The critical value(s) isare?1.64; 1.64). (Round to two decimal places as needed. Use a comma to separate answers as needed.) Enter your answer in each of the answer boxes.

Explanation / Answer

p-value = 2 * P(Z > |TS|)    {since this is two-sided test}

here

TS = -1.67

hence

p-value = 2 P(Z > 1.67)

= =NORMSDIST(-1.67)*2

= 0.094919

critical value = normsinv(0.05)    {0.05 because alpha = 0.10 and left tailed probability = alpha /2}

ande 1.64485

-1.64485