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Mathematics, 14.04.2020 21:58 Lovelybunny321

A simple random sample of size nequals10 is obtained from a population with muequals68 and sigmaequals15. (a) What must be true regarding the distribution of the population in order to use the normal model to compute probabilities involving the sample mean? Assuming that this condition is true, describe the sampling distribution of x overbar. (b) Assuming the normal model can be used, determine P(x overbarless than71.4). (c) Assuming the normal model can be used, determine P(x overbargreater than or equals69.1).

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