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The time between arrivals of large comets on earth is exponentially distributed with a mean of one year.
A. What is the shorterst period of time during which you have at least 90% probability of seeing a comet?
B. What is the probability that at least three comets arrive during the two- year period 2015-2016 ?
Some one take me step by step on this question.
The Appliance Center has six sales representatives at their North Jacksonville outlet. Listed below is the number of refrigerators sold by each last month.
Mean of $62000 per year and a standard deviation of $5000 per year. what percent of police officers make: what salary represents the top 5%?
The following table lists the annual amounts of glass cullet produced by Kimble Glass Works, Inc. Determine the least squares trend equation. Estimate the amount of scrap for the year 2005.
If the shop does not want to give more than 1% of its customers a free lube and oil change service, how long should the guarantee be?
The margin of error for a sample size 25 is +-3. Will the margin of error be greater or less if the sample size is 400? What is the new margin of error?
What is the expected number of ticket holders that will fail to show for the flight? What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight?
the professor plots a histogram of these several proportions. Should a Normal model be used to represent the sampling distribution of the proportion of tails?
Suppose you want to test the hypothesis that students who study one week before score different from students who study the night before. A 2 sample t-test test is run based on your data and a p-value is calculated to be 0.0219. What is the approp..
what is the f ratio? why is the computation of the f ratio based on mean squares instead of sums of
The publisher selects a random sample of 200 subscribers and finds that 116 plan to renew their subscriptions. Use (a=0.01). p = the population of subscribers to Golf Illustrated who renew. Calculate the p-value.
10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
a particular pitching machine is manufactured so that it will throw the ball into the strike zone of a 6-foot batter 90
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