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The weights of full-grown adult female okapis are normally distributed with a mean of 500 pounds and a standard deviation of 30 pounds. What is the probability that
a) A randomly selected full-grown adult female okapi weighs at least 550 pounds?
b) A randomly selected full-grown adult female okapi weighs between 425 and 525 pounds?
Two student groups of 40 students each scored, respectively, between 45% to 85% (first group) and 55% to 90% (second group) on the test. A paper is randomly chosen from the two groups and shows the score of 78%. What is the probability that the pa..
consider the following set of data23 12 26 53 57 34 76 16 106 63 122 15a calculate the covariance of the set of data.
1 per cent produced by Machine 2 were defective. If an item selected at random is found to be defective, what is the probability that it was produced by Machine 2.
Show that someone will think that the claim has more than a fifty percent chance of being true if p > q / (1 + q). Explain.
Finds the average life time for this sample is 970 hour and the standard deviation is 80 hours. Can the firm claim that the average life time is 1000 hours at the 5% level of significance?
on average a textbook author makes two word processing errors per page on the first draft of her textbook. what is the
the true mean breaking strength of yarn used in manufacturing drapery material is required to be above 100 psi. from
In a sample of 60 mice, a biologist found that 46% were able to run a maze in 30 seconds or less. Find the 99% limit for the population proportion of mice who can run that maze in 30 seconds or less?
the weights in kilograms of a group of crates being shipped to panama are 95 103 110 104 105 112 and 92. what is the
Sales of single-family houses have been brisk in Mid City this year. This has especially beentrue in older, more established neighborhoods, where housing is relatively inexpensive comparedto the new homes being built in the newer neighborhoods.
A furniture store claims that a specially ordered product will take, on average, M = 35 days (5 weeks) to arrive. The standard deviation of these waiting times is 8 days.
A fast food chain sells its burgers alone or as part of a "value meal" which includes fries and a drink. They know some customers are health conscious.
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