Probability that sample mean of observations between range
A population has a mean of 300 and a standard deviation of 24. A simple random sample of 144 observations will be taken. What is the probability that the sample mean will be between 297 and 303?
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A simple random sample of 144 observations will be taken. What is the probability that the sample mean will be between 297 and 303?
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Assuming that the population standard deviation is known to be 1.6 cm, use a 0.05 significance level to test the claim that the mean circumference of all pumpkins is equal to 39.9 cm.
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