Verizon 10:46 PM + mathxl.com myEFSC 7.2 instructur Do Homew.. 7.4 7.3 Do Hom To

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Verizon 10:46 PM + mathxl.com myEFSC 7.2 instructur Do Homew.. 7.4 7.3 Do Hom Topic: DB4... Next Gene... kMobil... Spring 2018 STA 2023-02Z Files Erica Felix | 3/12/18 10:46 PM Homework: 7.3 Score: 0 of 1 pt 7.3.5 Save 1 of 18 (0 complete) HW Score: 0%, 0 of 36 pts Assigned Media Question Help Do one of the following. as appropriate. (a) Find the critical value z/2- (b) find the critical value/2. (c)state that neither the normal nor the t distribution applies Confidence level 90%:n 24; is known; population appears to be very skewed. Find the critical value. OA /1.28 O B. W2=1.714 oc. W2=1.319 D./ 1.645 0 E. Neither normal nor t distribution applies. Click to select your answer and then click Check Answer All parts showing Clear All Check Answer

Explanation / Answer

Using standard normal z-table, z-score = 1.645
Using standard t-table, t-score for df = 23 = 1.714

Though sigma is known, sample size n < 30.
Hence we use t distribution.

Option B is correct.

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