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Tickets. A delivery company s trucks occasionally get parking tickets, and based on past experience, the company plans that the trucks will average 1.3 tickets a month, with a standard deviation of 0.7 tickets.
a) If they have 18 trucks, what are the mean and standard deviation of the total number of parking tickets the company will have to pay this month?
b) What assumption did you make in answering this question?
Suppose that a 2012 National Health Interview Survey gives the number of adults in the United States which gives the number of adults in the United States.
The thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters. Determine the cumulative distribution function of flange thickness.
Suppose a business borrower projects that it will experience net profits of $2.1 million, compared to $23 million the previous year.
Determine the binomial distribution for any random data. Also determine the probabilitygreater than 4.
In Exercise you made a data set for the botnet data. Use that data set to compute the correlation between the number of bots and the number of spam messages per
question consider the following set of sample data78 121 143 88 110 107 62 122 130 95 78 139 89
What is the probability that a random sample of 49 different one-hour shopping periods will yield a sample mean between 441 and 446 shoppers and interpret your answer in words.
Class finds 54% of 450 randomly selected voters are in support. Both groups will create 95% confidence intervals. Which group concludes that the outcome is too close to call? Why?
A total of 61,647 people responded to an Elle/ MSNBC.com survey. It was reported that 50% of the respondents were women and 50% men.
prices of toasters you took a random sample of 18 two-slice toasters and found the mean price was 65.49 and the
In each case, explain whether a control group was used and whether a placebo treatment was used.- Explain whether each of the following experiments was single-blind, double-blind, or neither.
What is meant by the reliability of a measure? Distinguish between true score and measurement error.- Describe the methods of determining the reliability of a measure.
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