A company has 600 employees. A random sample of 49 employees took a computer literacy test. The sample resulted in a mean score of 75 with a standard deviation of 21.
a. Estimate the standard error of the mean.
b. Develop an approximate 95 confidence interval for the population mean of the 600 employees.
Question 2
According to the Empirical Rule, if the data form a bell shaped normal distribution approximately ___________________ _ percent of the observations will be contained within 1 standard deviation around the mean.
Fill in the blank(s) with correct word
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