According to the MIT Airline Data Project, American 2 points Save Answer normal

Question

According to the MIT Airline Data Project, American 2 points Save Answer normal controlled 15.5% the domestic market in 2010, A random sample of 125 domestic passengers was elected thing the approximation to the binomial distribution what is the probability that 20, 21.22.23.24.or25 passengers tom his sample were on Airline ? 0.2534 0.4225 0.5319 0 06810 A survey conducted in 2011 asked employed adults from age 25 to 70 if they plan to keep a foot in the working wond ater retirement Thit-three percent of the respondents answered Yen likely". A random sample of75 adults from this age group was asked the same question. the normal approximaton to the binomial adults from this sample would very plan to keep a foot in the working world ? 0.1075 02119 0.3192 0.4721 John's commute week on mean or minutes and a standard commute tome for a during day will be more than 30mnutes? 0.0401 0.0885 0.1977 0.2578

Explanation / Answer

5.

Mean =26.7

Stdev = 5.1

P(X>30)

= P(Z> (30-26.7) / 5.1)

= P(Z> .647)

=1-.742

=.258

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