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A recent visit to a nursing home showed how many times nursing residents fell in the last 24 months. The data is 0,0,1,2,3,6,1,2,4,1,3,4,11,10,8,8,0,0,0,1.
What percentage of the nursing home residents had at least four falls in the last 24 months?
Use a 1% level of significance to test the claim that the distribution of first nonzero digits in the account file does not follow Benford's Law.
(a) Calculate the expected value of the amount that player A will get.
Construct a probability plot that will allow you to assess the plausibility of the lognormal distribution as a model for the rainfall data of Exercise 83 in Chapter 1
Suppose that the results of the sample lead to rejection of the null hypothesis. Classify that conclusion as a:
What is the probability she will get at least 2 hits in the game? (Please round answer to three decimal places).
What is the lower bound for the 95% confidence interval for the proportion of IPhone users who plan to get another IPhone.
a statistics instructor collected data on the time it takes the students to complete a test. the test taking time is
What size samples are needed for a statistical power of 70 percent in detecting a difference of 5 percent between the estimated percentages of recent CD buyers.
Problem: Overweight? Although the rules of probability are just basic facts about percents or proportions, we need to be able to use the language of events and their probabilities. Choose an American adult at random. Define two events:
The margin of error in the poll was reported as 6 percentage points (with a 95% degree of confidence). Which statement is correct?
If a particular shipment has light bulbs with a 3% chance of defect, what is the probability that this whole shipment will be accepted?
The following data represent survival time in days after a heart transplant and patient age in years at the time of transplant for 10 randomly selected patients.
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