Question Students took pictures of themselves squinting and another picture with their eyes wide open. The data were collected for the purpose of testing the null hypothesis that squinting didn’t make a difference in the expected age guessed versus the alternative that squinting would make you look older. Forty-seven (n=47) students ages guessed by the […]
Question Your class took a test in statistics and the students earned the following scores:77 64 86 97 105 85 86 61 77 85 96 86 84 73 1. Find the mean and the standard deviation 2. Find the z score for a grade of 86 Is this an unusual score? why or why not? […]
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Question Questions 1-2: A recent Fox News poll of 1016 registered voters in the US revealed that 77% currently disapprove of the job that Congress is doing. Suppose that percentage applies to all registered voters in the US. 1.True/False: It is possible that 80% of registered voters disapprove of the job that Congress is doing because of […]
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