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Wyoming fisheries contend that the mean number of cutthroat trout caught during a full day of fly-fishing on the Snake, Buffalo, and other rivers and streams in the Jackson Hole area is 4.0. To make their yearly update, the fishery personal asked a sample of fly-fishermen to keep a count of the number caught during the day. The numbers were: 4, 4, 3, 2, 6, 8, 7, 1,9, 3, 1, and 6. At the 0.05 significance level, can we conclude that the mean number caught is greater than 4.0?
Find the usual summary measure that tells approximately how far from average these weights are.
To find the 95 percent confidence interval for the true population mean. From the results below, is it true that 95% of the sample means will fall
Vision. It is generally believed that nearsightedness affects about 12% of all children. A school district tests the vision of 169 incoming kindergarten.
Agency wants to select samples from 10 landfills. The director has 15 landfills from which she can collect samples. how many different samples are possible?
a person has a health saver plan with the likelihood of spending per year 1000 .10 2000 .20 30000.30 and 40000.4. with
Based on this sample, predict the number of times a child who spends 15 hours of quality time with his or her parents each week
State whether the null hypothesis should be rejected on the basis - Write down the hypothesis
suppose we wanted to know if people get more nervous before flying in an airplane or taking a ship to their
Compute the z score that allows computing the probability associated with the sample mean score being less that 67.
1. What is the formula for the Expected Value E(X) for ANY Probability Distribution. 2. What is the formula for the Expected Value E(X) of a Binomial Distribution?
Only write the final answer; do not write the formula or computations used to derive the answer. Do not convert the answer to a percentage.)
Test the following hypotheses: (a) there is no effect due to interaction; (b) there is no effect due to region; and (c) there is no effect due to road-marking quality.
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