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a) A statistical study reported that a drug was effective with a p-value of .042. Explain in words what this tells you.
b) How would that compare to a drug that had a p-value of .087?
A store selling newspapers orders only x=4 of a certain newspaper because the manager does not get many calls for that publication. If the number of requests per day follows a Poisson distribution with mean 3.
Births with gestation time of 258 days or less are regarded to be premature births. Determine the probability that randomly selected pregnant woman will give birth to premature baby?
Testing for population proportion - evidence that the proportion of data processing clerks who have gone through the new training and are no longer employed is less than .25?
For the most recent year available, the mean annual cost to attend a private university in the United States was $20,182. Assume the distribution of annual costs follows the normal probability distribution and the standard deviation is $4,400.
Can you provide an example using your own data set (two related and unrelated variables) of at least twenty numbers each and apply the formula of correlation. Determine the correlation of each of the two sets of data.
Determine the upper and lower control chart limit and the lower control chart limit for various values of the fraction defective (p) in the sample taken. Assume a 99.7 % confidence.
Scores on certain nationwide college entrance examination follow normal distribution with mean of 500 and a standard deviation of 100. Determine the probability that student will score?
An average department store sells 350 men's suits per year. The men's suit departments at a particular national chain of stores claim they sell more than the industry average. In 35 of their stores, they sold, on the average, 430 suits per year wi..
A concessionaire for the local ballpark has made a table of conditional values for the different alternatives also states of nature
What is the probability that 30% or fewer male employees will indicate that they have to pick up the slack for mom's working flextime ?
Determine out the regression equation. Determine the estimated sales if 40 contacts are made.
What are the differences between regression and correlation analysis? What is correlation? Does correlation prove causation? Why or why not? Explain and provide examples to support your explanation.
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