Mathematics, 21.10.2020 17:01 heyyy6096
Car Fuel Economy – Each year a trio of government agencies publishes a fuel economy guide for all of the current model year of cars. For the current 2014 model year, the population mean highway fuel efficiency was 27.5 mpg, and the population standard deviation was 6.4 mpg. The underlying distribution for highway fuel efficiencies for the population of all 2014 model year cars is unimodal and skewed to the right. Suppose we take a sample of 50 current 2014 model cars and compute the sample mean. The central limit theorem tells us that the distribution for possible values of this sample mean is N(27.5, 0.905). What is the probability that the resulting sample mean highway fuel efficiency could be 30 mpg or higher?
Answers: 1
Mathematics, 21.06.2019 19:00
Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.
Answers: 1
Mathematics, 21.06.2019 21:40
In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.
Answers: 3
Mathematics, 21.06.2019 22:30
How many times larger is 6 × 10^12 than 2 × 10^7? a. 30,000 b. 3,000 c. 3,000,000 d. 300,000
Answers: 1
Car Fuel Economy – Each year a trio of government agencies publishes a fuel economy guide for all of...
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