Is it normal? Is it reasonable to treat the following sample as though it comes from an approximately normal population? Explain.
Answer to relevant QuestionsFind the z-score: Find the zscore for which the area to its right is 0.89. Pay your taxes: Among all the state income tax forms filed in a particular state, the mean income tax paid was p = $2000 and the standard deviation was a = $500. As part of a study of the impact of a new tax law, a sample of ...Compute the sample mean it and the sample standard deviation s. Testing math skills: In order to test the effectiveness of a program to improve mathematical skills, a simple random sample of 45 fifth- graders was chosen to participate in the program. The students were given an exam at ...A sample of eight repair records for a certain fiber- optic component was drawn, and the with the following results: 30 35 19 23 27 22 26 16 a. Construct a dotplot for these data. Are the assumptions for constructing a ...
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