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, demetriascott20
Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.
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Mathematics, 21.06.2019 21:40, ur4286
Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.
Answers: 3
Suppose that the Department of Transportation would like to test the hypothesis that the average age...
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