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A survey item asks respondents, "How many times have you shoplifted?" and gives them the answer options: 0, 1-3, 4-6, 7 or more.
a. What level of measurement is this variable?
b. What measures of central tendency can be computed on this variable? Central Tendency is mean if data is normally distributed.
Describe the data scales best suited for presentation in a pie chart. How effective are the pie charts that often accompany a newspaper article in explaining the statistics used in the article?
A company selling vegetable seeds in packets of 20 estimates that the mean number of seeds that will actually grow is 18, with a standard deviation of 1.2 seeds
find the 95 confidence interval for the variance of the weights of containers of motor oil if a sample of 14 containers
Compute the 95% confidence interval using the two-sample t confidence interval.- Compute the 95% confidence interval using the matched pairs t confidence interval.
An insurance company checks police records on 582 accidents selected at random and notes that teenagers were at the wheel in 91 of them. Create a 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.
A baseball player gets a hit in 30 out of 100 times at bat. What is the probability that he gets a hit in his next at bat?
A survey of undergraduate students in the School of Business at Northern University revealed the following regarding the gender and majors of the students:
checkout scanners - proportion problem. the federal trade commission ftc conducted a study in 1998 of checkout
Develop the estimated regression equation for data and plot the residuals against ". Does the residual plot support the assumptions about e? Explain.
ken is interested in determining if there are differences between mens occurrence of obesity and prior football team
1.makers of generic drugs are required to demonstrate that their generic drug does not differ significantly from the
Does lovastatin reduce the risk of heart attack? Researchers gave lovastatin to 2,325 people and an placebo to 2,081 people. the average age of both groups in 58 years.
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