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You are interested in comparing the level of stress among graduate students in a psychology program to the stress among graduate students in a business program. You give them a scale with range of 0 (no stress) to 7 (extremely stressed) and obtain the following data:
Table B.1
Psychology Business
1 6
5 6
0 2
4 3
2 1
7 7
a. What are the independent and dependent variables for this study?
b. State the null hypothesis and research hypothesis.
c. Can you reject the null hypothesis at alpha = 0.05?
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In CaliforniaSpeeding.jmp are recorded speeds (in miles/hour) of a randomly selected sample of cars traveling on a section Highway 405 in Los Angeles (based on data from Sigalert)
A random sample of 100 peaches is gathered and the mean diameter is calculated. What is the probability that the sample mean is greater than 3.79 inches.
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