Bob's exam score was 2.17 standard deviations above the mean. The exam was taken by 200 students. Assuming a normal distribution, how many scores were higher than Bob's?
Answer to relevant QuestionsJoan's finishing time for the Bolder Boulder 10K race was 1.75 standard deviations faster than the women's average for her age group. There were 405 women who ran in her age group. Assuming a normal distribution, how many ...Find the associated z-score or scores that represent the following standard normal areas. a. Middle 60 percent b. Highest 2 percent c. Middle 95 percent On January 1, 2011, a new standard for baseball bat "liveliness" called BBCOR (Ball-Bat Coef-cient of Restitution) was adopted for teams playing under NCAA rules. A higher BBCOR allows the ball to travel farther when hit, so ...The number of patients needing a bed at any point in time in the pediatrics unit at Carver Hospital is N(19.2, 2.5). Find the middle 50 percent of the number of beds needed (round to the next higher integer since a "bed" is ...The default rate on government-guaranteed student loans at a certain public four-year institution is 7 percent. (a) If 1,000 student loans are made, what is the probability of fewer than 50 defaults? (b) More than 100? Show ...
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