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Among college-age students (18-24 years old), 9.2% have hypertension. During a blood-donor program conducted during finals week, a blood-pressure reading is taken first, revealing that out of 200 donors, 29 have hypertension. All answers to three places after the decimal. A 95% confidence interval for the true proportion of college students with hypertension during finals week is ( , ). We can be 80% confident that the true proportion of college students with hypertension during finals week is with a margin of error of . Unless our sample (of 200 donors) is among the most unusual 10% of samples, the true proportion of college students with hypertension during finals week is between and . The probability, at 60% confidence, that a given college donor will have hypertension during finals week is , with a margin of error of . Assuming our sample of donors is among the most typical half of such samples, the true proportion of college students with hypertension during finals week is between and . We are 99% confident that the true proportion of college students with hypertension during finals week is , with a margin of error of . Assuming our sample of donors is among the most typical 99.9% of such samples, the true proportion of college students with hypertension during finals week is between and . Covering the worst-case scenario, how many donors must we examine in order to be 95% confident that we have the margin of error as small as 0.01? Using a prior estimate of 15% of college-age students having hypertension, how many donors must we examine in order to be 99% confident that we have the margin of error as small as 0.01?
the base of a right triangular prism is a isosceles triangle whose equal sides measure 25 cm each. the volume is 0.075 cubic meters. what is the height of the prism.
If we have 2 groups with 5 characteristics each, what would our critical value be with an alpha of .05?
The lengths of the sides of a triangle are 4, 4, and What is the measure of the angle between the two shortest sides?
Upstream, downstream: Junior's boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the same amount of time as it takes to go 9 miles upstream, then what is the speed of the current?
Calculate the sample proportion, µ for the proportion of offspring peas with yellow pods.
find the time that will elapse before the concentration of dye in the tank reaches 1% of its original value.
At the first tri-city meeting, there were 8 people from town A, 7 people from town B, and 5 people from town C
An ice cream company finds that at a price of $5.00 demand is 6300 units. For every $0.15 decrease in price, demand increases by 135 units. Find the price and quantity sold that maximizes revenue. What is the price and quantity?
elena's daughter sold 102 boxes of girl scout cookies she was told that this amount represnted 5%of the troop sale how many boxes did the troop sale?
Two fire towers are 30km apart, tower A being due west of tower B. A fire is spotted from the towers, and the bearings from A and b are E 14 N and W 34 N, respectively. Find the distance d of the fire from the line segment AB.
a company orders 2 types of parts, brass and steel. One shipment contains 3 brass and 10 steel parts for a total cost of $48. A second shipment contains 7 brass and 4 steel parts for a total cost of $54. How much does each type of part cost?
a boat's crew rowed 18 miles downstream, with the current, in 2 hours. The return trip upstream, against the current, covered the same distance, but took 4.5 hours. Find the crew's rowing rate in still water and the rate of the current.
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