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A random survey of 75 death row inmates revealed that the mean length of time on death row is 17.4 years with a standard deviation of 6.3 years. Conduct a hypothesis test to determine if the population mean time on death row could likely be 15 years.
Is this a test of means or proportions?
the population of a town grows at a rate proportional to the population present at time t. the initial population of
Find a 95% confidence interval for the mean dielectric strength of the oil.
Carpal tunnel. The painful wrist condition called carpal tunnel syndrome can be treated with surgery or less invasive wrist splints.
Find a 95% confidence interval for the mean alteration of the inseams on men's pants.- How large a sample is necessary for the bound on the error of estimation to be 0.05 for the confidence interval in part (a)?
Suppose 18 custopmers are selected at random. What is the proability that exactecly ten customers will ask for hot peppers?
A large population of overdue bills has balances that follow a normal curve. When we take a sample of 100 of these the average is $500 and the standard deviation is $100. (a) what statement can you make about the range $300 to $700? (b) what state..
The player must pay $4 if she draws a green marble. Find the expected value in the games.
Out of n individual voters at an election, r vote Republican and n -r vote Democrat. At the next election the probability of a Republican switching.
Has the average community level of suspended particles for the month of August exceeded 30u/m3?
question the lifetime of a certain type of colour television picture tube is known to follow a normal distribution
A Japanese floppy disk manufacturer has a daily production rate of about 20,000 high density 3.5-inch diskettes. Quality is monitored by randomly sampling 200 finished disks every other hour from the production process and testing them for defects..
Suppose the IRS audits 5% of those having an annual income exceed- ing 200,000 dollars. What is the probability that at least one in a group of 15 such individuals will be audited? What is the expected number that will be audited? What is the most..
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