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The distribution of lifetimes for a certain type of light bulb is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the 33rd percentile of the distribution of lifetimes.
A. 560B. 330C. 1044D. 1440A. none of these
Using the .05 significance level, can we conclude that there is a positive association between the two variables?
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of four students was taken in order to estimate the mean study time for the population of all students.
Recognize the given samples are independent samples or matched pairs.
If an urn is selected at random and a ball is drawn, find the probability it will be red.
Compute the variance and standard deviation
The following data from a sample of 100 families show the record of college attendance by fathers and their oldest sons: in 22 families, both father and son attended college; in 31 families, neither father nor son attended college; in 12 families,..
If the sample consists of n = 15 individuals, then compute df value for the t statistic?
Make a scatter plot, illustrate the regression lines. Determine the correlation coefficient between husband’s and wife’s education for couples in which wife is employed full time?
Compute an F-statistic for each linear construct and determine its significance. Also, state what questions each of these contrasts address.
Formulate the hypotheses that can be used to determine whether union membership increased in 2006.
One person's file is chosen at random. Find out probability that selected person will fall into following categories. Book keeping.
There are two telephone lines A and B. Let E1 be the event that line A is being used and E2 be the event that line B is being used
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