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1. A car insurance company has determined that 7% of all drivers were involved in a car accident last year. Among the 11 drivers living on one particular street, 3 were involved in a car accident last year. If 11 drivers are randomly selected, what is the probability of getting 3 or more who were involved in a car accident last year?
2. The participants in a television quiz show are picked from a large pool of applicants with approximately equal numbers of men and women. Among the last 11 participants there have been only 2 women. If participants are picked randomly, what is the probability of getting 2 or fewer women when 11 people are picked?
Between what two values does the P -value of this test fall?
At the .01 significance level, is there a relationship between job pressure and age?
What is the probability that no more than two of the three are commercial successes?
Find the relative risk for moderate beer drinkers as compared to nondrinkers, finds the 95% confidence interval
Be sure to include information about how you would use the concept of probabilities to apply to profiles for hiring more satisfied individuals.
Suppose you found that in doing the hypothesis test, you were able to reject the null hypothesis. What is the most appropriate conclusion to draw?
What percentage of the averages or medians of the sample will be greater than 140 seconds?
At the .01 significance level, is there a difference in the use of the four entrances?
Assuming that the variability is unchanged (i.e., σ = 6), is there sufficient evidence to suggest that the strength of the product has increased at the 1% level of significance?
Calculate the probability that the median of the sample or average medians is:
When would you use hypothesis testing and when would you use confidence intervals?
Obtain a test statistic and p -value. Interpret the results at α = .01.
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