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It is known that the content of cereal boxes made by a certain company is normally distributed with a standard deviation of 6 grams. The estimation of the real average of the contents of the boxes was made using confidence intervals and it turned out to be: 68,988, 71,012. What we know is that the confidence level is 92%. Calculate the sample size used to obtain this interval. (Express your answer as a whole number.)
A sample of 26 automobiles 2 yrs. old showed a standard deviation of $170. What is the test statistic for testing the difference between these population variances at alpha =.01?
1. a study of machiavellian traits in consultants was performed. the consultants were then classified as having
Anonymous? Confidential? Texas A&M, like many universities, offers screening for HIV, the virus that causes AIDS. Students may choose either anonymous.
If we wish to account for this in our model, how many additional regressors need to be included in our regression model.
Utilize this information to construct a probability table, and then calculate each of the given probabilities:P (female and domestic car).
a city council consists of 7 males and 4 females. two councilors are selected at random to represent the city. what is
Find historical information on the statisticians who developed statistical tests, such as the normal distribution, Student t distribution, Chi-Square distribution
He further believes that the probability that a given person will be found at home is 0.65. Given this information, what percentage of the interviews.
In the following five scenarios, H0, a, the obtained probability (p-value), and the true status of H0 are given.
rolling a fair eight-sided die produces a uniformly distributed set of numbers between 1 and 8 with a mean of 4.5 and a
Group the data in given problem into classes, and draw a histogram of the frequency distribution.- Find the population mean and the population standard deviation.
Include in your discussion the concepts of means and variances of linear composites of random variables and the concept of independence.
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