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Faculty members in a state university system who resign within 10 years of initial employment are entitled to receive the money paid into a retirement system, plus 4% per year. Unfortunately, experience has shown that the state is extremely slow in returning this money. Concerned about such a practice, a local teachers' organization decides to investigate. From a random sample of 50 employees who resigned from the state university system over the past 5 years, the average time between the termination date and reimbursement was 75 days, with a standard deviation of 15 days. Use the data to estimate the mean time to reimbursement, using a 95% confidence interval.
in 2011 the price of a business math text rose to 98. this is 11 more than the 2010 price. what was the old selling
The daily proportion of major automobile accidents across the United States can be treated as a random variable having a beta distribution with α = 6 and β = 4. Find the probability that, on a certain day, the percentage of major accidents is less..
Construct a 99% jackknife con?dence interval for the actual variance of the air pollution index for this city and interpret.
A research firm observes that men are twice as likely as women to watch the Super Bowl on television. Does this information represent descriptive statistics or inferential statistics? Why?
fine motor skills were measured in a sample of kindergarteners before and after 6 months of occupational therapy.
Difference between the discrete and the continuous random variable.
We have a card game with 52 cards, consisJng of 4 suits (Dia, Clu, Hea, Spa), the cards are numbered Ace-10, then J,Q, K in each suit.
the interquartile range is used as a measure of variability to overcome what difficulty of the range?a. the range is
a television station claims that its monday night movie regularly has 35 percent of the total viewing audience. if this
Make an Excel line graph of the data on computer viruses. Discuss the underlying causes that might explain the trend or pattern.
Is there sufficient evidence for concluding that true average repair time exceeds 200 min? Carry out a test of hypotheses using a significance level of .05.
a significant interaction effect indicates thata. the influence of one factor is not the same for each level of the
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