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Suppose the heights of sons and fathers has a correlation of 0.6, and both sons and fathers have an average height of 68 inches.
If the average height of sons of 74-inch fathers is 72 inches, does this mean that the average height of fathers of 72-inch sons is 74 inches? Explain.
If the average height of sons of 68-inch fathers is 68 inches, does this mean that the average height of fathers of 68-inch sons is 68 inches? Explain.
a large shipment of computer chips is known to contain 8 defective chips. suppose you select 500 chips at random.a what
Annual family dental expenses for the families of a random sample of ten employees of a company are given below. You can assume the family dental expenses for the employees of the company are normally distributed.
Find that the mean weight in the sample is 308 pounds.The standard deviation is 23. Using significance level of .01 test the null hypothesis using 5-step procedure.
Estimate the true mean tensile strength of bars of this size and tyoe using 90% confidence interval. List any assumptions you need to make. Given n=150, x(bar)=477N/mm^2, and s=13.
One flight daily to a certain destination. The following information shows the probability distribution of late arrivals for that flight in the past month:
the data set toxemia contains information for a sample of 100 infants born in two hospitals in boston. indicators of a
Complete the table and answer the following questions. Use the .05 significance level. How many treatments are there? What is the total sample size?
Suppose that in order to satisfy legal requirements, a meat pie manufacturer may only produce .2% of pies below a weight of 750grams. If the preceding holds and if the weight of all pies is normally distributed with a standard deviation of 50 gram..
The National Highway Association is studying the relationship between the number of bidders on a highway project and the winning (lowest) bid for the project.
question 1 twenty-one homes with living areas under 2000 sq ft have selling prices with a standard deviation of
a soft-drink machine is regulated so that it discharges an average of 200 milliliters per cup. if the amount of drink
Yyielding a $20,000 profit, and a 30% chance that the building will sell for $230,000, yielding a $70,000 profit. What is the expected profit? = E( X - ) = ( xi - What is Var(X)?
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