Percent of the students scored
The mean score of a college entrance test is 500; the standard deviation is 75. The scores are normally distributed. What percent of the students scored below 320?
A) About 50.82%
B) About 34.13%
C) About 7.86%
D) About 0.82%
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Recommended (98%)
Rated (4.3/5)
What is the area under the normal curve between z = 0.0 and z = 1.79?
Bryce and Shay are married, file a joint tax return, have AGI of $145,000, and have two children. McKenzie is beginning her freshman year at Public University during Fall 2010, and Cindy is beginning her senior year at Southwestern University duri
Always A Winner Ltd. is considering expanding its gambling network. The Managing Director of the company, Mr GG, has offered you a good tip for the races if you could provide information on the appropriate.
Suppose X~N(0,1)and Y ~N(2,2),(that is ,EY =2 and Var(Y)=2) and X and Y are independently distributed. Find P{X is less than or equals to Y }.
Samples of 10 seats of each type (A, B, C) were selected and given the safety test. The scores are given below. Is one seat safer than another or are they all about equal in terms of safety? A. Write a statistical null and alternate hypothesis
At a local middle school, 60% of students are enrolled in choir or band. If a random sample of 5 students is taken, what is the probability that all 5 students are in choir or band?
What is the proportion of the total area under the normal curve within plus and minus two standard deviations of the mean?
Kline Company, an accrual basis calendar year corporation, reported $560,000 net income before tax on its financial statements prepared in accordance with GAAP for 2012. Kline%u2019s records reveal the following information.
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