(Solution Library) The US compiles enrollment data on public schools and reports the info. The following frequency distribution for the enrollment by grade level
Question: The US compiles enrollment data on public schools and reports the info. The following frequency distribution for the enrollment by grade level for a given year. Frequencies are in thousands.
Grade Frequency
x f
9 3604
10 3131
11 2749
12 2488
Total
- determine probability distribution of the random variable x (and find rel. frequencies)
- Construct probability histogram for the random variable x.
- What is the probability that a randomly selected student is in either 9 th or 10 th grade?
- What is the probability that randomly selected student is in at most 11 th grade?
- Find the mean and standard deviation of the random variable x.
Deliverable: Word Document 
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