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# Final_Review_Addendum_with_Key - driver A random sample of...

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A report from the Secretary of Health and Human Services stated that 70% of single-vehicle traffic fatalities that occur at night involve an intoxicated driver. A random sample of 50 single-vehicle traffic fatalities that occurred at night is selected. a. What is the probability that exactly 35 accidents involved an intoxicated driver? b. What is the probability that 29 or fewer accidents involved an intoxicated driver? c. What is the probability that at least 33 but no more than 39 accidents involved an intoxicated driver? d. If there were 430 single-vehicle traffic fatalities at night nationwide during the month of July, how many of them would you expect to involve an intoxicated driver? SCROLL DOWN FOR ANSWERS

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A report from the Secretary of Health and Human Services stated that 70% of single-vehicle traffic fatalities that occur at night involve an intoxicated
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Unformatted text preview: driver. A random sample of 50 single-vehicle traffic fatalities that occurred at night is selected. e. What is the probability that exactly 35 accidents involved an intoxicated driver? P(X = 35) = 0.122346862 =BINOMDIST(35,50,0.7,FALSE) f. What is the probability that 29 or fewer accidents involved an intoxicated driver? P(X< 29) = 0.047763835 =BINOMDIST(29,50,0.7,TRUE) g. What is the probability that at least 33 but no more than 39 accidents involved an intoxicated driver? P(33 < x < 39) 0.703342437 =BINOMDIST(39,50,0.7,TRUE)-BINOMDIST(32,50,0.7,TRUE) h. If there were 430 single-vehicle traffic fatalities at night nationwide during the month of July, how many of them would you expect to involve an intoxicated driver? E = µ = np = 430*.70 = 301...
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Final_Review_Addendum_with_Key - driver A random sample of...

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