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If X is a normally distributed random variable with mean 97 and standard deviation 10, find x2 such that P(102 2) = 0.05.
An epidemiologist is trying to discover the cause of a certain kind of cancer. He studies a group of 10,000 people for five years, measuring 48 different "factors" involving eating habits, drinking habits, smoking, exercise, and so on.
situations comparing two proportions are described. in each case determine whether the situation involves comparing
The use of both test is desired to ensure the reliability of the observations, when the above/below shows if there is a tendency the median, where up/down shows the observation in proportion to each other.
What would be the minimum sample needed to estimate the population mean of the length of carrots using Gro-Haut to within 1.5 cm with 99% confidence?
a manufacturing company is interested in predicting the number of defects that will be produced each hour on the
The probability that a flower seed will germinate is 0.7. Find the mean and standard deviation for the random variable x, the number of seed that will germinate in each set.
Use the normal distribution to approximate the following probability: According to the most recent Davenport student profile, 47% of students have children under 17 living at home with them.
True or False? Bivariate correlation coefficient always has same sign as b 1 in Y = b 0 + b 1 X.
If 15% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is normally distributed.
suppose there are 4 different bins labled a b c and d.in how many ways can 9 identical indistinguishable billard balls
the average number of tadpoles per gallon of water in rocky mountain national park is believed to be 13 and is normally
Perform a correlational analysis on the following variables: Student Extroversion, Lecture Extroversion, Student Agreeableness, Lecture Agreeableness.
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