Mathematics, 18.12.2019 03:31 Skybil1204
Students who have completed a speed reading course have reading speeds that are normally distributed with a mean of 950 words per minute and a standard deviation equal to 220 words per minute. 10 students are selected at random.
what is the standard deviation of the number of students who read at less than 850 words per minute?
what is the probability that at most two of them would read at less than 850 words per minute?
Answers: 1
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Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists
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Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.
Answers: 3
Students who have completed a speed reading course have reading speeds that are normally distributed...
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