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Given the probability that james will go the gym after work is 28 % and the probability that Sam will go the gym after work is 10%.
What is the probability that they will BOTH go to the gym after work on the same day?andWhat is the probability that ONE of them will go to the gym after work?
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
Find the probability that a random selection of 9 songs will have mean length of 186.30 seconds or less. Assume distribution of the lengths of the songs is normal.
Does the regression equation account for a significant portion of the variance in the cognitive scores? Use a=.05 to evaluate the F-ratio.
1.experiments on learning in animals sometimes measure how long a laboratory rat takes to find its way through a maze.
a) Draw the scatter diagram. Does it appear that x and y are related? If so, how? b) Test to determine whether there is evidence of a linear relationship.
A researcher conductued a study of the access speed of 35 hard drives and concluded that his maximum error of estimate was 35. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he ..
Would this be a T-value distribution? Can you take me through the steps to determine upper and lower limits of a 95% confidence interval?
The standard deviation equaled five days. Assuming that the distribution is normal, what percent of the invoices were paid within 15 days of receipt?
If a random sample of 10 people found that 9 were pro-life (i.e., 90%), while another random sample of 1000 people from the same population found that 550 were pro-life (i.e. 55%), which would you find to be more significant? Why?
Make two different Factor Fireworks for 64 and 84. Write an equation that shows 64 as a product of prime numbers. Then use the equation to help find 54/16.
ICR questioned 1000 American male and female heads of household regarding their house cleaning attitudes. The survey has a margin of error of plus or minus 5%.
Set up hypotheses to test if distribution of birthdays can be considered coming from uniform distribution.
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