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Suppose that the average annual income of a defense attorney is $150,000 with a standard deviation of $40,000. Assume that the income distribution is normal. What is the probability that the average annual income of a sample of 100 defense attorneys is more than $120,000?
Estimate the average number of minutes longer a woman must work out at light exertion than at heavy exertion to get the same benefit. Give a 95% confidence interval.
Compute population µ and ð for the population. Find the z score for each population transform the original population into a new ppulation of N=5 with a mean µ=60 standard dev.ð=8.
after being rejected for employment jennifer summer learns that the kingston technology corporation has hired only 3
A arbitrary sample of 8 students is selected. Illucidate the probability that among the students in the sample at least 7 are female.
what conditions must be met before constructing a confidence interval for a proportion? be sure to be specific with
Given two continuous random variables X and Y, use Theorem 4 to express E(X) in terms of (a) the joint density of X and Y; (b) the marginal density of X.
For what proportion of patients will drug be effective for between 2 and 2.25 hours?
in a test of weight loss programs 198 subjects were divided such that 33 subjects followed each of 6 diets. each was
Joe wants to sell his car. He receives one offer each month and must decide immediately whether to accept the offer. Once rejected, the offer is lost.
The products are acceptable and that 30% are defective. If five of the products are randomly selected, find the probability that all five are defective?
Calculated the probability of observing a sample proportion of voters 0.55 or higher supporting the incumbent governor.
Assume that the population of hours worked per week by college graduates employed full-time is normally distributed with mean . Can we conclude that is greater than 40 hours? Use the .01 level of significance.
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