Mathematics, 14.02.2020 01:21 thesleepycat
Suppose that the Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 years. A random sample of 45 cars had an average age of 10.6 years. It is believed that the population standard deviation for the age of cars is 4.1 years. The Department of Transportation would like to set 0.05. What is the conclusion for this hypothesis test? A. Since the test statistie is more than the critical value, we can condude that the average age of cars on the road is less than 12 years. B. Since the test statistic is less than the critical value, we can conclude that the average age of cars on the road is less than 12 years. c. Since the test statistic is less than the critical value, we cannot conclude that the average age of cars on the road is less than 12 years. D. Since the test statistic is more than the critical value, we cannot conclude that the average age of cars on the road is less than 12 years.
Answers: 1
Mathematics, 21.06.2019 20:00
He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean and standard deviation according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%
Answers: 3
Mathematics, 21.06.2019 20:30
Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.
Answers: 2
Mathematics, 21.06.2019 20:30
Acircle has a circumference of 7.850 units. what is its radius?
Answers: 2
Mathematics, 21.06.2019 23:30
Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b
Answers: 3
Suppose that the Department of Transportation would like to test the hypothesis that the average age...
Biology, 14.11.2020 01:00
English, 14.11.2020 01:00
History, 14.11.2020 01:00
Mathematics, 14.11.2020 01:00
History, 14.11.2020 01:00
Engineering, 14.11.2020 01:00
Mathematics, 14.11.2020 01:00
Chemistry, 14.11.2020 01:00
Physics, 14.11.2020 01:00
Biology, 14.11.2020 01:00
Physics, 14.11.2020 01:00
Mathematics, 14.11.2020 01:00