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Q1) In particular region of Cape Cod, it is known that lobstermen trap on average of 32 pounds of lobster per day with standard deviation of four pounds. If random sample of 30 lobster fishermen is chosen, determine the probability that their average catch is less than 31.5 pounds?
Q2) Mean weight of loads of coal placed in train cars by loading machine is 43.0 tons with standard deviation of 8.0 tons. Suppose that weight of loads placed in train cars by this loader are normally distributed, if random sample of 9 loads is selected for a weight check, determine the probability that mean weight of those loads is more than 40.60 tons.
If desired confidence level is 95 percent, suitable critical value is?
Consider the following estimated regression equation, based on 10 observations.
How large a sample should be taken if the desired margin of error is?
How much net profit can John expect (on average) to earn from the store in total over the next five years?
Depends on the satellite information illustrate what is the expected number µ of real forest fires on the Seward Peninsula.
Below is a plot of the Olympic gold medal winning performance in the high jump (in inches) for the years 1900 to 1996.
The mean of a sample is 22.5. The mean of 1000 bootstrapped samples is 22.491. The bias of the bootstrap mean is
Now we would like to evaluate regression equation for X using Y as independent variable.
Using What's Best! (Or solver) find the least-cost matrix.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Point out your final decision concerning hypothesis test and compute p-value for test.
Infer that the difference in the level of satisfaction with service between the two branches.
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