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5. A population has a mean of 300 and a standard deviation of 18. A sample of 144 observations will be taken. The probability that the sample mean will be between 297 to 303 is a. 0.4332 b. 0.866 C 0.9332 d. 0.0668 Answer with solution please, thanks a lot
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Answer #1

Gisem mean = 300 Pccording to central timit thecre ㄨ-A is a. Standaard normal xandom vemable 2g7-3oo lg 303-300 I44 こp(2 2.00)-P(zぐ2.00) using 2 table, we gel. o.g772ー0、0228

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