During the 3 PM to 5 PM time period, cars arrive at a bank's drive-through window at an average rate of 15 customers per hour. Assume that the time between arrivals follows the exponential distribution.
What is the probability that a randomly selected customer will arrive more than 10 minutes after the previous customer?A) 0.0821
B) 0.1515
C) 0.2732
D) 0.3670
Question 2
The Canadian government would like to test the hypothesis that the average hourly wage for men is more than 2.00 higher than the average hourly wage for women. The following data summarizes the sample statistics for hourly wages for men and women.
Assume that the population variances are equal. Men WomenSample mean 25.40 21.20Sample size 20 18Sample standard deviation 6.20 5.90If Population 1 is defined as men and Population 2 is defined as women, the degrees of freedom for this hypothesis test are ________.A) 34
B) 35
C) 36
D) 38
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