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Home security systems. A recent TV advertisement for home security systems said that homes without an alarm system are three times more likely to be broken into. Suppose that this conclusion was obtained by examining an SRS of police records of break-ins and determining whether the percent of homes with alarm systems was significantly smaller than 50%.
Explain why the significance of this study is suspect and propose an alternative study that would help clarify the importance of an alarm system.
Muscular dystrophy is an incurable muscle-wasting disease. The most common and serious type, called DMD, is caused by a sex-linked recessive mutation.
Compute a .95 confidence interval for the mean in the following situations: (a) n = 12, σ = 22, X‾= 65, (b) n = 22, σ = 10, X‾= 185, (c) n = 50, σ = 30, X‾ = 19.
Question: A survey found that an American Family generates an average of 17.2 lb of glass garbage each year. Assume that the standard deviation of the distribution is 2.5 pounds. If a sample of 55 families is randomly selected, find the probabilit..
The mean salary offered to students who are graduating from Coastal State University this year is $24,230, with a standard deviation of $3678. A random sample of 85 Coastal State students graduating this year has been selected. What is the probabi..
What is the chance that the number who say "yes" in a properly drawn random sample of 500 will be smaller than 360?
The sample of 200 voters and tests Ho: P=0.5 versus H1:P(not equal)0.5 at 5% level. What is the power of the test if the true value of P is 0.55?
Find out the area using Normal distribution. As, if Z is a standard normal variable find out the probability that Z lies.
Suppose that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more?
question a manufacturer of chocolate candies uses machines to package candies as they move along a filling
As part of a review of its rate structure, an automobile insurance company has compiled lhe following data on cl.aims filed by five roale policyholders and five female policyholders.
How to calculate weight of evidence and information value with sas code in SAS Enterprise Miner? I have confuse how to set the variable in SAS EM.
The cost of gasoline will decrease or stay the same over the next 30 days because of summer holiday travel. What is your alternative hypothesis statement?
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