My Notes A university has 14 statistics classes scheduled for its Summer 2013 te

Question

My Notes A university has 14 statistics classes scheduled for its Summer 2013 term. One class has space available for 40 students, eight classes have space for 50 students, one class has space for 70 students, and four classes have space for 100 students. (a) What is the average class size assuming each class is filled to capacity? (Enter your answer as a whole number.) 65 students (b) Space is available for 910 students. Suppose that each class is filled to capacity and select a statistics student at random. Let the random variable X equal the size of the student's class. Define the PDF for X. (Enter your answers as fractions.) 40 1/14 285714288X 50 8/14 | 285714286 × (c) Find the mean of x. (Enter your answer as a whole number.) 65 students (d) Find the standard deviation of X. (Round your answer to two decimal places.) 22 91 students

Explanation / Answer

You calculations are correct the table is to be filled using fractions as shown

Rest of your calculations are correct

X P(X=x) X. P(X=x) 40 1/14 20/7 50 4/7 200/7 70 1/14 5 100 2/7 200/7

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