Test: Final Exam Time Remaining: 00.47 10 Submit Test This Question: 1 pt 12 of

Question

Test: Final Exam Time Remaining: 00.47 10 Submit Test This Question: 1 pt 12 of 19 (1 complete) This Test: 19 pls possible A random sample of thirty-ive 200-meter swims has a mean time of 3, 18 minules and the popufation standard deviation is 0 07 time. Interpret the results deviation is 0 07 minutes Construct a 95% confdence nterval for the populaton mean The 95% confidence ntervalsOD (Round to two docna places as needed ) Interpeet the results Choose the correct answer below OA. With 95% confidence, itcan be said that the sample mean brme 's between the endponts ofthe gren B. Wth 96% confidence, it can be said that e populaton mean trne is not between the endponts of the gren oc. with 95% condence. t can be said that the population mean time is between the endpoints of the given confidence interval Click to select your answers) xspace

Explanation / Answer

We have n = 100 x' = 3.18 s = 0.07 z = 1.96

LCL = 3.18 - 1.96 * 0.07 / 100 = 3.17.

UCL = 3.18 + 1.96 * 0.07 / 100 = 3.19.

The confidence interval is (3.17, 3.19).

C. With 95% confidence, we can say that the population mean time is between the endpoints of the given interval.

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