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Discussion Post: Statistics A Scientist at A Pharmaceutical Company
Describe a hypothesis test study that would help your work or conclusions in some way. Describe what variable would be tested and what would be your guess of the value of that variable. Then include how the result, if the null were rejected or not, might change your conclusions or actions in some way.
The quality-control department took a random sample of 50 cans and found that the arithmetic mean weight was 16.05 ounces? Determine the p-value.
Assuming sales are normally distributed, what is the probability that total sales for a 7 day period are $,7,700.00 or more.
What was the weighted mean price of a book? (Round your answer to 2 decimal places.)
A certain disease occurs in 35% of the population. A test for the disease is fairly accurate: it misclassifies people with the disease as healthy 6% of the time and reports that a healthy person is diseased just 7% of the time.
a. Use the Hildreth-Lu procedure to obtain a point estimate of the autocorrelation parameter. Do a search at the values p = .1, .2, ... , 1.0 and select from these the value of p that minimizes SSE.
What is the probability that all five copiers will be up and running at the same time? Suppose the manager added a fourth black-and-white copier, how would the probability of all copiers being ready at any one time is affected?
Suppose X is a geometric random variable with probability of success 0.35. Find the following probabilities
a laboratory sampled and tested 16 chicken eggs and found that the mean cholesterol was 230 mg. with a standard
suppose a compact disk cd you just purchased has 15 tracks. after listening to the cd you decide that you like 6 of the
The national average for the math portion of the College Board's SAT test is 524. The College Board periodically rescales the test scores such that the standard deviation is approximately 50. Answer the following questions using a bell-shaped dist..
For which examines the relationship between LSD dosage and blood copper level: a. Compute a 90% two-sided confidence interval on the slope.
which of the following coefficients of linear correlation is most likely to express the relationship between weight and
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