Coffee: The National Coffee Association reported that 62% of U.S. adults drink coffee daily. A random sample of 225 U.S. adults is selected. Round your answers to at least four decimal places as needed. Part 1 of 6 Part 2 of 6 (a) Find the mean 1. The mean Part 3 of 6 (b) Find the standard deviation The standard deviation dis 0.0324 P Part 4 of 6 Part 5 of 6 Part 6 of 6 is 0.62 Part: 5/6 X A. P (c) Find the probability that more than 67% of the sampled adults drink coffee daily. The probability that more than 67% of the sampled adults drink coffee daily is 0.0612 X (d) Find the probability that the proportion of the sampled adults who drink coffee daily is between 0.55 and 0.67. S The probability that the proportion of the sampled adults who drink coffee daily is between 0.55 and 0.67 is 0.9236 (e) Find the probability that less than 59% of sampled adults drink coffee daily. The probability that less than 59% of sampled adults drink coffee daily is (f) Would it be unusual if less than 54% of the sampled adults drink coffee daily? It (Choose one) be unusual if less than 54% of the sampled adults drink coffee daily, since the probability is X X X X S S d 6

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Let's say the countdown for a space shuttle launch has begun. At "T minus 25 hours" (that is, 25 hours before launch), a problem occurs. If the technicians have not fixed the problem by T minus 8 hours, the launch will have to be scratched. How much time (in hours) do the technicians have to correct the problem? hr

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Fire departments in your county have an average benchmark of 6 minutes on a fire call from the time the 911 operator takes the call to the time the first firefighter arrives on the scene. This 6-minute average includes a 1-minute call handling time from when 911 gets the call to when they notify the fire department. There is a 1-minute time from when the firefighters are notified to when they get out of the fire station. Then they have 4 minutes from when they leave the station to when they arrive on scene. Two fire departments in your county are being compared. From one fire department, a random sample of 10 calls has a mean of 6.51 minutes total with a standard deviation of 0.26 minutes. From the other fire department, a random sample of 11 calls shows a mean of 6.42 minutes with a standard deviation of 0.19. Construct a 90% confidence interval for the difference in the mean call time between the two fire departments. Fire departments in your county have an average benchmark of 6…

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