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Previous surveys have found that people tend to quit following their New Years' Resolutions after 7 days on average. We asked a sample of 16 CSUSM students how long they kept their resolutions and the average length was 10 days with an SS of 240.
Assuming a normal distribution, test the hypothesis that CSUSM students hold their resolutions longer than other people with alpha = .01.
a. Specify the null and alternative hypotheses.
b. Report the df, the critical value, the SE, and the test statistic
c. Report your decision in a sentence
d. Summarize the results of your test
Reconsider the data on claw closing force and claw size for three species of crabs, shown in Exercise 7.22. Display 10.18 shows output from the least squares fit to the separate lines model for the regression of log force on log height.
In any game, the number of passes N that Donovan McNabb will throw has a Poisson distribution with expected value µ = 30. Each pass is a completed with probability q = 2/3, independent of any other pass or the number of passes thrown.
Is the direction of net force always in the direction of motion? Explain.
1. A comparison of the proportion of frequent binge drinkers, revisited. Refer to Exercise 8.46. Redo the exercise in terms of the proportion of nonfrequent binge drinkers in each classi?cation. Explain how you could have obtained these results fr..
Use a scatter plot to determine the relationship between the x values and the y values.
Assume then money spent is uniformly distributed between these amounts. Determine the mean amount spent on insurance?
21 percent of the employees in a company have managerial positions, and 31 percent of the employees in the company have MBA degrees. Also, 66 percent of the managers have MBA degrees. Using the probability formulas, find the proportion of employee..
This semester a sample of 55 students revealed an average cost of books of $415 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
a light fixture contains 2 light bulbs. the lifetime xi of each bulb is exponentially distributed with a mean of 200
Are any ethical considerations in slowing payments to your suppliers for the sake of increasing your company's bank balances?
The data collected was for each car for each type of fuel. Performance was measured in miles per gallon. Perform an ANOVA test and state the results.
What value should p have so the is not received correctly retransmitted until probability of more than one retransmission is less than 0.05?
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