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The average age of CEO is 53. Assume the variable is normally distributed. If the Standard Dev is 8 years, find the probability that the age of a randomly selected CEO will be between 56-57 y/o. (round to 4th decimal) The probability a randomly selected CEO will be between 56-57 y/o is?
Can you provide an example using your own data set (two related and unrelated variables) of at least twenty numbers each and apply the formula of correlation. Determine the correlation of each of the two sets of data.
Construct the 90 percent confidence interval for the proportion of checking account customers who have a Visa card with the bank. (Round your answers to 3 decimal places.)
Determine the 95 percent confidence interval and the 95 percent prediction interval for the selling price of a home with 2,200 square feet.
Find a point estimate of the population mean. Find the 95% confidence interval of the population mean. Assume the variable is normally distributed.
What is the mean of the sample proportion of pieces of unread mail? What is the standard error of the sample proportion?
What is the probability that the sample mean breaking strength of a random sample of 100 pieces of fabric is less than 1 .8 kg/mm?
What is the probability that the next 100 customers will spend an average of less than $56 on dinner?
We measure the self esteem scores of a sample of statistics students, reasoning that this course may lower their self esteem relative to that of the typical college student (µ=55 and σ x =11.35) We obtain these scores:
In a mobile phone shop on a Sunday morning, out of n = 77 customers x = 19 buy a mobile phone. What is the 95% confidence interval for the proportion of customers buying a mobile phone?
An additional $3,000 of net working capital will be required throughout the life of the project. What is the project's net present value if the required rate of return is 11 percent?
At a particular location on a river the number of fish caught per man-hour of fishing effort has a Poisson distribution with ?= 1.3 fish per man hour. Find the following probabilities:
Illustrate a quantitative assessment of what our charts would look like and what these new targets would do to our operations.
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