The 90% confidence interval for the mean one week amusing time in New York City is 5.22 less than mean less than 5.98 minutes construct a 95% confidence interval based on the same data which interval provides more information

The 90% confidence interval is given by mean - 1.645(s.d. / sqrt(n)) < μ < mean + 1.645(s.d. / sqrt(n))

mean - 1.645(s.d. / sqrt(n)) + mean + 1.645(s.d. / sqrt(n)) = 2μ = 5.22 + 5.98 = 11.2

μ = 11.2 / 2 = 5.6

Thus, mean - 1.645(s.d. / sqrt(n)) = 5.6 - 1.645(s.d. / sqrt(n)) = 5.22

5.6 - 5.22 = 1.645(s.d. / sqrt(n)) = 0.38

s.d. / sqrt(n) = 0.38 / 1.645 = 0.231

The 95% confidence interval is given by mean - 1.96(s.d. / sqrt(n)) < μ < mean + 1.96(s.d. / sqrt(n)) = 5.6 - 1.96(0.231) < μ < 5.6 + 1.96(0.231) = 5.6 - 0.4528 < μ < 5.6 + 0.4528 = 5.15 < μ < 6.05

The 95% confidence interval provides more information because it has a larger interval.

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: