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Is there a relationship between whether or not someone completed and returned their 2011 census report and their opinion of gun control? A research class conducted a random survey of shoppers in the mall. What can they conclude based on the data. Show analysis in SPSS
A bookcase contains 3 statistics books and 4 biology books. If 2 books are chosen at random, find the chance that both are statistics books.
In a randomized clinical trial of timolol vs. placebo in patients surviving acute myocardial infarction, the total deaths at an average of 24 months after treatment were found to be 65 out of 720 in the Timolol group and 112 out of 860 in the plac..
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the P-value of the test statistic?
Do sit down restuarant franchises and fast food franchises differ significantly in stock price? Specifically, is the average stock price for sit-down restaurants different from the average stock price for fast food restaurants?
These data are presented below. Should the manager be given an increase in staff? Why or why not? Please show your work.
Describe what assumptions must be met to use this test. Finally, where in your course project data set might you employ a paired t-Test?
A sample of 40 decaffeinated-coffee drinkers showed a mean of 5.84 cups per day, with a standard deviation of 1.36 cups per day. Use the .01 significance level. Compute the p-value.
Twenty air samples were obtained and the carbon monoxide concentrations were recorded. the results in ppm (parts per million) were:
Use a two proportion z-test to perform the required hypothesis test. State the conclusion.
The following problem develop the concept of determining the probability distribution of random variable and its mean and variance.
For such groups of 800, would it be unusual to get 687 consumers who recognize the Dull Computer Company name?
Give a 95% confidence interval for the mean of the population from which the sample is drawn.
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