Suppose x has a distribution with u = 20 and o = 14. n USE SALT (a) If a random sample of size n = 35 is drawn, find u-, o- and P(20


Suppose x has a distribution with u = 20 and o = 14.<br>n USE SALT<br>(a) If a random sample of size n = 35 is drawn, find u-, o- and P(20 <xs 22). (Round o, to two decimal places and the probability to four decimal places.)<br>H =<br>『ス=<br>P(20 sxs 22) =|<br>(b) If a random sample of size n = 65 is drawn, find u, o, and P(20 < x < 22). (Round o, to two decimal places and the probability to four decimal places.)<br>H =<br>『ス=L<br>P(20 sxS 22) = |<br>(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).)<br>The standard deviation of part (b) is --Select---<br>part (a) because of the -Select--- v sample size. Therefore, the distribution about u- is ---Select--<br>

Extracted text: Suppose x has a distribution with u = 20 and o = 14. n USE SALT (a) If a random sample of size n = 35 is drawn, find u-, o- and P(20 < x="">< 22).="" (round="" o,="" to="" two="" decimal="" places="" and="" the="" probability="" to="" four="" decimal="" places.)="" h="『ス=L" p(20="" sxs="" 22)="|" (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---="" part="" (a)="" because="" of="" the="" -select---="" v="" sample="" size.="" therefore,="" the="" distribution="" about="" u-="" is="">

Jun 01, 2022
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