Calculate the correlation between the student''s grade

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Reference no: EM13830729

The following data represents the grades of a sample of 12 students in statistics and economics as follows

Math grade

Economic Grade

Calculate the correlation between the student's grade in math and economics. What its type and strength.

The balances of all saving accounts at a local bank have a normal distribution with its mean equal to $ 12450 and standard deviation equal to $ 4160. Find the probability that the mean of a sample of 50 saving accounts selected from this bank will be

More than $ 11500.

Within $ 1500 of the population mean.

Find the number of accounts which will have an account of more than the population mean by at least $ 1000.

A charity believes that when it puts out an appeal for charitable donations the donations it receives will normally distributed with a mean $ 50 and standard deviation $ 6, and it is assumed that donations will be independent of each other.

Find the probability that the first donation it receives will be greater than $ 60.

Find the value X such that 5% of donations are more than $ X.

Reference no: EM13830729

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