Question

Question 6 4 pts In a sample of 12 recently sold Bay Area two-bedroom condos, the mean price was $368,854 with a (sample) standard deviation of $14,613. Assume that the underlying distribution is normal. A 95% confidence interval for the population of all recently sold in California two-bedroom condos is (360568, 377122) (350411.30, 387296.70) (359,569,378,139) It cannot be determined because the sample is too small. Question 7 4 pts In a sample of 12 recently sold Bay Area two-bedroom condos, the mean price was $368,854 with a (sample) standard deviation of $14,613. Assume that the underlying distribution is normal. The Error Bound for this interval is 16554 9285 8277 18570

Answer 1

Que.6

95% confidence interval:

$\small \\ C.I. = \bar{X} \ \pm \ t_{\alpha/2, n-1} \ \frac{s}{\sqrt{n}} \\ \\\\ C.I. = 368854 \ \pm 2.201 \ \frac{14613}{\sqrt{12}} \\ \\ \\ C.I. = (\ 359569 \ , \ 378139 \ )$

Que.7

Error bound:

S EB = ta/2,1-1 n 14613 EB = 2.201 12 EB = 9285