Suppose x has a distribution with x = 26 and 8 = 23. 1 USE SALT (a) If a random sample of size n = 40 is drawn, find go

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Suppose X Has A Distribution With X 26 And 8 23 1 Use Salt A If A Random Sample Of Size N 40 Is Drawn Find Go 1 (27.11 KiB) Viewed 43 times

Suppose x has a distribution with x = 26 and 8 = 23. 1 USE SALT (a) If a random sample of size n = 40 is drawn, find go and (26 sxs 28). (Round og to two decimal places and the probability to four decimal places.) P(26 SX S28) = (b) If a random sample of size n-63 is drawn, find an and P(26 sis 28). (Round or to two decimal places and the probability to four decimal places.) 02- P(26 5 X s 28) - (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 smaller than part (a) because of the larger sample size. Therefore, the distribution about az is narrower