25) The time it takes an acrylic paint to dry is normally distributed. If the mean is 2 hours 36 minutes with a standard deviation of 24 minutes, what is the probability that the drying time will be between 2 and 3 hours? a) 0.0919 b) 0.4081 c) 0.7745 d) 0.9081 26) The circumference of a circular window is 10 feet. What is the area of the window? a) $\sqrt{\frac{10}{\pi}} ft^2$ b) $2\sqrt{\frac{10}{\pi}} ft^2$ c) $\frac{25}{\pi} ft^2$ d) $25\pi ft^2$
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Step 1: (Problem 25) Convert times to a common unit: mean = 2 hr 36 min = 156 minutes, standard deviation = 24 minutes; the interval 2–3 hours is 120–180 minutes. Show more…
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