Lock, Statistics: Unlocking the Power of Data, 2e Help I System Announcements PR

Question

Lock, Statistics: Unlocking the Power of Data, 2e Help I System Announcements PRINTER VERSSON Your answer is partially correct. Try again Asample with sten 10has 1-5085, and , 21,5. The dotplot for this sample is given below. 500 510 520 530 540 550 560 570 Indicate whether or not it is appropriate to use the I-distribution. o -distribution and give the estimated standard error If it is not appropriate, enter -1 in both of the answer below fleld Enter the exact answer for the degrees of freecom and round your anower for the standand error to two decimal places al. tandand ermor By accessing this Question Assistance, you will learn while you earm points based on the Print Potential Policy set by your instructor SD SI alt

Explanation / Answer

(a)

No

EXPLANATION:

The sample size = n = 10 < 30. Small sample. The distribution is not normal. There are 2 outliers. So, t distribution is not appropriate.

(b)

(i) df = -1

(ii) standard error = - 1

EXPLANATION:

As per instructions: "If it is not appropriate, enter - 1 in both the answer fields below. Here, t distrubtion is not appropriate. So, put - 1 in both df and standard error.

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