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Suppose that the average annual income of a lawyer 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 15 lawyers is more than $120 000?
jude is interested in buying a digital camera. he visited 9 stores at random and recorded the price of the particular
The housing market has recovered slowly from the economic crisis of 2008.? Recently, in one large? community, realtors randomly sampled 35 bids
How many participants need to be enrolled in each group to have a 90% chance of detecting a significant difference using a two sided test with α =0.05 if compliance is perfect?
Ima Bitlost computes the 95% confidence interval for the average satisfaction score as 8.6 ± 1.96(2.0). What is her mistake?
A club has 225 members. If there is a 60% attendance rate per meeting, find the mean, variance, and standard deviation of the number of people who attend each meeting. Note that this is a binomial distribution.
historically, only 5% of the gear boxes have such flaws. what is the probability that hooper's sample contains no gear boxes with manufacturing flaws ?
When the level of confidence and sample size remain the same, a confidence interval for a population proportion π will be __________ when p(1-p) is larger than when p(1-p) is smaller.
please show how you solve thisreducing wrinkles. of course the eason for durable press treatment s to reduce wrinkling.
many teens have posted profiles on sites such as facebook and myspace. a sample survey asked random samples of teens
Joe's total medical costs associated with the illness are $1000. What is the amount of medical coverage he should buy?
What is uncertainty in Quantitative research? How can uncertainty be minimized in Quantitative research?
The coupon rate is 7% and the interest payments are made semiannually. What is its YTM? (Show workings)
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