Solution for QID #116347: A business statistics class with 250 students recently had a | StudyHelpMe

A business statistics class with 250 students recently had an exam of which 210 students earned a passing grade. A random sample of 60 students was selected from this class. What is the probability that between 48 and 56 students passed this exam?   According to IDC, Apple controlled 10.0% of the global computer market in the 1st quarter of 2013. To verify this market share, a random sample of 150 computer users was selected of which 8.5% were Apple models. Determine the interval that contains 95% of the sample proportions from this sampling distribution and conclude whether or not this sample supports the findings of IDC.