3. The length of time it takes for a manufacturer to build a car is normally distributed with a mean of 20 hours and a standard deviation of 1.5 hours. Use this information to answer the following questions. A. What percent of cars are made in less than 17 hours? Show work. B. What percent of cars take between 19 and 22 hours to make? Show work. C. How long would it take to build your car if it is in the 75 percentile? Show wom

Of the data sets below, which has the largest standard deviation?Set A:   1, 2, 3, 4Set B:   1, 1, 4, 7Set C:   0, 5, 5, 10Set D:   6, 6, 6, 6   Set A Set B  Set C  Set D

In the 1992 presidential election, Alaska's 40 election districts averaged 1993 votes per district for President Clinton. The standard deviation was 584. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. a. What is the distribution of X? X ~ N( b. Is 1993 a population mean or a sample mean? Select an answer v C. Find the probability that a randomly selected district had fewer than 2053 votes for President Clinton. d. Find the probability that a randomly selected district had between 2074 and 2208 votes for President Clinton. e. Find the 95th percentile for votes for President Clinton. Round your answer to the nearest whole number.

Using​ PivotTables, find the mean and standard deviation of sales by region in the data provided.   LOADING... Click the icon to view the data.         Question content area bottom Part 1 Complete the table below. ​(Type integers or decimals rounded to two decimal places as​ needed.)   Average of Amount StdDev of Amount East enter your response here enter your response here North enter your response here enter your response here South enter your response here enter your response here West enter your response here enter your response here Grand Total enter your response here enter your response here