Not everyone pays the same price for the same model of
a car. the figure illustrates a normal distribution for the
prices paid for a particular model of a new car. the
mean is $17,000 and the standard deviation is $500. in
questions 11 - 22 use the 68 - 95 - 99.7 rule, illustrated
in the figure to the right to find the percentage of buyer
who paid
number of car buyers
6. between $16,000 and $18,000.
7. between $17,000 and $18,000.
8. between $16,500 and $17,000.
9. between $17,000 and $18,500.
10. more than $18,000.
11. less than $16,500.

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?