Question 9 Not yet answered Marked out of 1.00 Flag question If the population standard deviation is 3, n=15, x =10, a 95% confidence interval for the population mean will be Select one: a. [4.004, 15.995] O b. [8.481, 11.518] c. [8.038, 11.961] O d. [5.015, 14.984]
Question 10 Not yet answered Marked out of 1.00 Flag question A random sample of size 100 students was selected. It was found that 73% of them pass a certain test, then a 90% confidence interval for the proportion of students who did not pass the test is Select one: O a. [0.649, 0.810] b. (0.662, 0.797] O c. [0.197, 0.343] O d. (0.666, 0.893] 11
Question 9 Not yet answered Marked out of 1.00 Flag question If the population standard deviation is 3, n=15, x =10, a 9
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