Mathematics, 23.03.2020 20:27 desimond01
2. A random test score X is obtained from a class with students who fall into two groups. For the first group X is conditionally Gaussian with mean 80 and variance 20, while for the second group X is conditionally Gaussian with mean 20 and variance 10. The probability that a student is in the first group is 0.6. (a) Find E [X] and Var [X] . (b) Assuming the grades are assigned as in the notes, find the probability that a randomly selected exam gets an A, B, C, D or F grade (in terms of the Φ function
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Mathematics, 21.06.2019 17:00, adreyan6221
Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?
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Mathematics, 21.06.2019 20:00, gordon57
Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
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Mathematics, 21.06.2019 22:00, sascsl2743
Determine if the equation defines y as a function of x: 2xy = 1. yes o no
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2. A random test score X is obtained from a class with students who fall into two groups. For the fi...
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