Likelihood that any flight arrives within schedule time

Reference no: EM1313736

Q1) Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.

a) Determine the likelihood all four of selected flights arrived within 15 minutes of the scheduled time?

b) Determine the likelihood that none of selected flights arrived within 15 minutes of scheduled time?

c) Determine the likelihood at least one of selected flights didn't arrive within 15 minutes of scheduled time?

2) In the particular market, there are 3 commercial television stations, each with its own evening news program from 6:00 to 6:30 P.M. According to the report in this morning's local newspaper, random sample of 150 viewers last night revealed 53 watched news on WNAE (channel 5), 64 watched on WRRN (channel 11), and 33 on WSPD (channel 13). At.05 significance level, is there a difference in proportion of viewers watching the three channels?

Reference no: EM1313736

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