##### Statistics/ Standard deviation

label Statistics
account_circle Unassigned
schedule 1 Day
account_balance_wallet \$5

One reason that normal distributions are important is that they describe how the results of an opinion poll would vary if the poll were repeated many times. About 40% of adult Americans say they are afraid to go out at night because of crime. Take many randomly chosen samples of 1050 people. The proportions of people in these samples who stay home for fear of crime will follow the normal distribution with mean 0.4 and standard deviation 0.015. Use this fact and the 68–95–99.7 rule to answer the questions below.

In many samples, what percent of samples give results above 0.4? Above 0.43?

Fill in the blanks

__(1)____ percent of samples give results above 0.4. (Give your answer as a whole number.)

__(2)____ percent of samples give results above 0.43. (Give your answer to 1 decimal place.)

Sep 14th, 2015

Please see the solution in the attached image. Please let me know if you have any questions

Sep 14th, 2015

...
Sep 14th, 2015
...
Sep 14th, 2015
Sep 25th, 2017
check_circle