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

A

C

B

B

D

B

F

F

D

C

B

C

Economic Grade

B

F

C

B

C

A

C

F

B

B

A

C

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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