Please answer section B highlited area. STAT 250 (3) Quiz: Chapter 9 Review Quiz

Question

Please answer section B highlited area.

STAT 250 (3) Quiz: Chapter 9 Review Quiz Tme Limit:01.30:00 Submit Qu This Question: 1 pt 2 of 11 (1 complete) This Quiz: 11 pts possible Thc weighls oou randorly and independently sclccled bogs of polaloes labd 20 pounds were foudto be 21., 21.3, 209, and 21.ti. Assume Normality . Using two-sided alternative hypothesis, should you be able to reject the hypothesis that the population mean is 20 pounds using significance k vol of 0.05? My U' wfry noi? The confidencu iniuv al s oported hU'U I am 95% contident the populaton mean is between 20 and 22 0 paunds b. Test the hypothesis that the population mean is not 20. Use a significance level of 0.05. c. ChoosU onc of the following conclusions. mean s t cannot rejech a Te pupulalin nean is 21.4 pour. L We cannat rejec a population mean ot 20 pounds a population mean of 20 i F. Ho #20 Ha: -20 The test statistic is Round to two decimal places as needed.) I he p-value is Round to three decimal places as needed c. Choose the A-We can reject a population mean of 20 pounds. coriclusion below. O B. The population mean is 21.4 pounds. We cannot reject a population mean of 20 pounds. C. !.. 1.1 -i :/i | (n..> | More Click to select your answer(s). 5:53 PM 129/2017

Explanation / Answer

The statistical software output for this problem is:

One sample T hypothesis test:
: Mean of variable
H0 : = 20
HA : > 20

Hypothesis test results:

Hence,

Test statistic = 7.15

P - value = 0.003

Variable Sample Mean Std. Err. DF T-Stat P-value Data 21.4 0.195789 3 7.1505549 0.0028

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