Sample mean corresponds
A sample from the population with m = 40 and s = 10 has the mean of M = 44. If the sample mean corresponds to z = 2.00, then how many scores are in sample?
n = 100
n = 25
n = 5
n = 4
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Principal of high school concerned regarding the amount of time students work. He wishes to determine the mean number of hours worked per week for such students. From earlier study, the known standard deviation of time spent per week on such jobs
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Its distance in feet above ground after t seconds is provided by s(t)=16t^2+64t+80. How many seconds it will take to reach ground level?
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