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The results from a survey are below:
Item Number of Votes
Doughnuts 20
Apple Turnovers 6
Doughnut Holes 5
Bismarcks 4
Pomegranate Cookies 5
Based upon all of this information, do a "goodness-of-fit" test to see if the distributions are the same as they were two years ago. Use a level of confidence of .01. Should we accept Ho or reject Ho?
At a fair run by a local charity organization, it costs 50 cents to try one's luck in drawing an ace from a deck of 52 playing cards. What is the expected profit per customer
What is the probability that it will crash at least two times in a given semester? What is the probability that it will not crash at all in a given semester?
The given data show the age distribution of top 14 doctors in emergency faculty of local hospital.
Here are the shopping times (in minutes) for a sample of shoppers at a particular shoe store: 25, 38, 34, 41, 37 and find the standard deviation of this sample of shopping times. Round your answer to at least two decimal places.
A researcher collected sample data for 17 women ages 18 to 24 . The sample had a mean serum cholesterol level (measured in mg/100 mL) of 188.8 , with a standard deviation of 5.5.
A researcher conducts an experiment comparing two treatment conditions and obtains data with 10 scores for each treatment condition.
Suppose that the incident rate of a particulat kind of accient is 1/10,000 persons. In a town of 50,000 persons, what is the probability that there is no accident of this kind?
Determine the probability that no more than 10 firms are perfectly competitive?
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error??
The data results are based on serum continine levels for each group. The claim is that exposure to tobacco smoke (as second-hand smoke) corresponds to higher levels of cotinine.
At the .01 significance level, is there a difference in the use of the four entrances?
Write down the advantages and disadvantages of using computer software for decision making.
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