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The following data represents the grades of a sample of 12 students in statistics and economics as follows
Math grade
A
C
B
D
F
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.
Sixty percent of the families in a certain community own their own car, thirty percent own their own homes, and twenty percent own both their own home and own car. If a family in the community is randomly chosen, what is the probability that they own..
What if the instruments are broken, not connected to anything, or just completely wrong? This is one of the primary reasons that the sequence is so important
What is the average rating for all CBC movies? How about ABN movies and BBS movies and create a line graph of the monthly average ratings for CBC for the year
Unions often oppose imports from what they call low-wage countries and advocate trade barriers to protect jobs from what they often characterise as "unfair" import competition" please critically analise this statement
Identify the sampling technique being used. Every 20th patient that comes into the emergency room is given a satisfaction survey upon their discharge.
Why is normality required for standard deviation applicability?
What are the changes social media has brought to consumers in different stages of their decision-making - how many social media platforms are used by online marketers in Saudi Arabia and what are their effects?
Which of the following statements are true? A.Probabilities can be any positive value. B.Probabilities must be nonnegative. C.Probabilities must be negative. D.Probabilities can either be positive or negative.
A random sample of 25 people employed by the florida state authority established they earned an average wage( including benefits ) of $65.00 per hour . a. what is the popular mean? what is the best estimate of the population mean ? b.develop a 99% co..
odds ratio odds ratio or is sometimes reported instead of relative risk. this normally gives the odds or likelihood of
In the first series of rolls of a die, the number of odd numbers exceeded the number of even numbers by 5. In the second series of rolls of the same die, the number of odd numbers exceeded the number of even numbers by 11. Determine which series ..
What is the probability
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