(a) If a random sample of size n = 35 is drawn, find µ, o z and P(15

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Suppose x has a distribution with ? = 15 and ? = 9.

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Suppose x has a distribution with u = 15 and o = 9.
n USE SALT
(a) If a random sample of sizen = 35 is drawn, find u, o, and P(15 < x< 17). (Round o, to two decimal places and the probability to four decimal places.)
P(15 <x< 17) =|
(b) If a random sample of sizen = 61 is drawn, find u,, o , and P(15 < x< 17). (Round o , to two decimal places and the probability to four decimal places.)
阪=
『ス=
P(15 < xs 17) =
(c) Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).)
The standard deviation of part (b) is --Select-- v part (a) because of the -Select- v sample size. Therefore, the distribution about u, is --Select---
the same as, smaller than, larger than
larger, same, smaller
narrower, wider
Transcribed Image Text:Suppose x has a distribution with u = 15 and o = 9. n USE SALT (a) If a random sample of sizen = 35 is drawn, find u, o, and P(15 < x< 17). (Round o, to two decimal places and the probability to four decimal places.) P(15 <x< 17) =| (b) If a random sample of sizen = 61 is drawn, find u,, o , and P(15 < x< 17). (Round o , to two decimal places and the probability to four decimal places.) 阪= 『ス= P(15 < xs 17) = (c) Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).) The standard deviation of part (b) is --Select-- v part (a) because of the -Select- v sample size. Therefore, the distribution about u, is --Select--- the same as, smaller than, larger than larger, same, smaller narrower, wider
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