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ntroduced in the 2000 model year, the Honda Insight was the first hybrid automobile sold in the United States. The mean gas mileage for the model year 2005 Insight with an automatic transmission is 56 mpg on the highway. Assume the gasoline mileage of this mileage is approximately normally distributed with a standard deviation of 3.2 miles per gallon.
a. What proportion of 2005 Honda Insights with automatic transmission gets over 60 mpg on the highway?
b. What proportion of 2005 Honda Insights with automatic transmission gets 50 mpg or less on the highway?
c. What proportion of 2005 Honda Insights with automatic transmission gets between 58 and 62 miles per gallon on the highway?
d. What is the probability that a randomly selected Honda Insight with an automatic transmission gets less than 45 miles per gallon on the highway?
e. What is the probability that a randomly selected Honda Insight with an automatic transmission gets more than 56 miles per gallon on the highway?
Women make up 24% of the science and engineering workforce. In a random sample of 400 science and engineering employees, what is the probability that more than 120 are women?
What should the guaranteed mileage be if the tire company desires that no more than 2 percent of the tires will fail to meet the guaranteed mileage?
The sample standard deviation is 10 lbs. We would like to decide if there is enough evidence to establish that the average weight for the population of lawnmowers is greater than 100 lbs.
The following data represent scores of 50 students in the applied business statistics test. Prepare the frequency distribution table and the frequency histogram for this data set.
A random sample of teachers from Georgia and an independent random sample of teachers from Indiana have been asked to report their mean annual income.
Find the minimum amount of water pumped in 30 days. Let y be the total number of gallons pumped x days after pumping being. Note that (0,0) is on graph of the equation.
Why do we use graphical displays of the data from our research, such as Pareto Charts, Bar Charts, Pie Charts, Flow Charts, or Process Control Charts?
Assume that you go to the drive through window at Wendy's and place an order. Two friends of yours independently place orders at the drive through window at the same Wendy's.
Find the most powerful predictor among the six independent variables using regression.
Perform 5 t-tests on the data comparing C1 to C2 on each of the 5 questions. Indicate which of the 5 variables has a difference between C1 and C2.
Convert each of the following z intervals to raw score x intervals:
Suppose that you select a sample of 100 U.S. hospital patients. The probability is 90% that the sample percentage will be within what symmetrical limits of the population?
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