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Somatolactin (SL) is a hormone released by the pituitary gland. It's function is unclear but experiments have been carried out to determine when it is released. An experiment was carried out to determine whether the somatolactin level in maturing male salmon is larger than in non-maturing male salmon. 30 maturing male salmon were sampled and found to have SL concentration of 32ng/ml and sample variance 0.4ng/ml. 40 non-maturing male salmon were sampled and found to have SL concentration of 30ng/ml and sample variance 0.5ng/ml. Does this provide significant evidence that the SL level in maturing male salmon is greater than that of non-maturing male salmon?
A normal distribution with a mean time of 2:00pm and a standard deviation of 15 minutes. What is the probability that the mail will arrive later than 2:30pm?
If you take the mean weights for random groups of 10 adults and form a new distribution, how will this new distribution compare to distribution of individuals?
\Write down the general formula for the discrete uniform probability distribution function. Now write down the probability distribution function for the random drawing of tile numbers. Is this a discrete uniform distribution?
He argues that the regression effect says people who perform very poorly in their previous job tend to perform well in their next job. Is this what the regression effect says? Explain.
Create the 95% confidence interval about mean value of y, number of days absent, given x = 95 degrees, and = 0.449x - 30.27
50 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 335 seconds.
Acme Taxi has two taxi cabs. The manager tracks the daily revenue for each cab. Over the past 20 days, Cab A has averaged $76.00 per night with a standard deviation equal to $11.00.
If you draw a ball, record the color then draw a second without replacing the first ball, what is the probability of choosing two green balls?
At a = 0.01, can it be concluded that the variance of the areas for counties in Indiana is less than the variance of the areas for counties in Iowa?
Also, what information do you need to get from the problem to put into Minitab to run a binomial calculation?
Lewis earned 85 on his biology midterm and 81 on his history midterm. In the biology class the mean score was 79 with standard deviation 5.
Twelve cases of leukemia are reported in people living in a particular census tract over a 5-year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer-incidence rates?
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