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Question: Simmons Market Research conducted a national consumer study of 13,787 respondents. The respondents were asked to indicate the primary source of the vitamins or mineral supplements they consume. Thirty five percent indicated a multiple formula was their choice. A subset of 20 respondents who used multiple vitamins was selected for further questioning. Half of them used a One A Day vitamin; the rest used generic brands. Of this subset, 4 were asked to fill out a more complete health survey.
a. Calculate the probability that the final selection of 4 subset members were all One A Day multiple vitamin users.
b. Compute the number of One A Day users expected to be selected.
c. Calculate the probability that fewer than half of the final selection were One A Day users.
The following performance scores have been recorded for 25 job applicants who have taken a preemployment aptitude test administered by the company to which they applied:- Construct a frequency distribution and a histogram for these data.
Each test of an integrated circuit produces an acceptable circuit with probability p, independent of the outcome of the test of any other circuit. In testing n circuits, let K denote the number of circuits rejected and let X denote the number of a..
37 percent of managers have MBA degrees. Using probability formulas. Determine the proportion of employees who are managers and have MBA degrees.
a group of researchers studied the effect of global environmental change on grazing lands. their article reported the
there are 40 students in an elementary statistics class. on the basis of years of experience the instructor knows that
how large a sample should be surveyed to estimate the true proportion of college students who do laundry once a week
farnum 1994 discusses a chrome plating process. small electric currents are run through a chemical plate that contains
Find the probability of each outcome.- The first two you choose are both good.- At least one of the first three works.- The first four you pick all work.
In a press release dated October 2, 2008, The National Cyber Security Alliance reported that approxi- mately 80% of adult Americans who own a computer claim to have a firewall installed on their computer to prevent hackers from stealing personal i..
Find the prob. that they get such a family and the boy is the youngest
Sometimes, the outcome of a jury trial defies the "commonsense" expectations of the general public. Such a verdict is more acceptable if we understand that the jury trial of an accused murderer is analogous to the statistical hypothesis-testing pr..
What should the average weight be if the production manager wants no more than 5% of the products to weigh more than 10 ounces and determine the probability of the sample average number of strokes being more than 5.0.
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