12.) A population of 32 scores has a rectangular shape and a mean of u 44 a.) If

Question

12.) A population of 32 scores has a rectangular shape and a mean of u 44 a.) If all possible samples are taken from this distribution of scores, how what will the shape of the distribution of sample means be? b.) If all possible samples are taken from this distribution of scores, what will the mean of the sampling distribution be? 13.) Describe what the standard error of the mean (Ou) represents? ) For a population with a mean of -50 and a standard deviation of -10, how much error, on average, would you expect between the sample mean (M) and the population mean for 14. a) A sample of n 4 scores b) A sample of n 16 scores c) A sample of n 25 score 70 and -20, what is the probability of obtaining a sample mean 15) For a normal population with greater than M-75 a) For a random sample of n-4? b) For a random sample of n -16? c) For a random sample of n 100?

Explanation / Answer

Solution12:

since sample size=n=32

n>30 large sample.

According to central limit theorem.

Follows normal distribution.

Solution12b:

according to ccentral limit theorem

sample mean=population mean=44

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