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The average weight of an airline passenger's suitcase is 45 pounds. The standard deviaiton is 2 pounds. If 15% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is normally distributed.
A recent national survey found that high school students watched an average (mean) of 7.5 DVDs per month with a population standard deviation of .60.
In a random sample of 512 parents with young children, 275 admitted to spanking their child as a regular form of punishment. Use the classical approach, at a 10% level of significance, to test the sociologist's claim.
A researcher collects data on children's weights from a random sample of children in the South and concludes that children in the South weigh less than the national average.
What is the age distribution of adult shoplifters (21 years of age or older) in supermarkets? The following is based on information taken from the National Retail Federation.
Over the past 50 years, the number of hurricanes that have been reported are as follows: 9 times there were 7 hurricanes, 14 times there were 8 hurricanes, 19 times there were 11 hurricanes, and in the remaining years there were 14 hurricanes. Wha..
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
Would the null hypothesis be accepted or rejected in this case?
What are three lessons learned relative ANOVA and Nonparametric tests? What concepts and analytic tools will you be able to use in your workplace ?
A random sample of n = 4 scores is selected from a population with µ = 80 and σ = 20. On average, how much difference would you expect between the sample mean and the population mean?
The results shown below are mean productivity measurements (average number of assemblies completed per hour) for a random sample of workers at each of three plants.
Mr. Connors philosophy class has 99 students, classified by academic year and gender, as illustrated in the table below. Mr. Connor randomly chooses one student to collect yesterday's work. What is the probability that he selects a male, given tha..
Find the probability that he will answer all 10 questions correctly.
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