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Computing probability values using normal distribution.
A sample of 500 evening students revealed that their annual incomes from employment in industry during the day were normally distributed with a mean income of $30,000 and a standard deviation of $3,000.
How many students earned more than $36,000? _______
What is the probability that there will be more than three trucks either being loaded or waiting?
Carry out suitable multiple comparison procedure to determine the source of the difference.
Small bag of Skittles candies has following assortment: red (12), blue (5), orange (15), brown (0), green (16), and yellow (7). Create the probability distribution for x.
Here are fifty observations on the weight of tea bags. Calculate the Standard Deviation and Variance.
Testout the significance of the sample correlation also develop regression equation with scatter plot. Calculate chi-square is less than the critical value
To determine whether two categorical variables are independent, one should use the:
Use a .10 level of significance to test the claim that the variance of all scores in the population is more than 9.
How large should n be so that the standard deviation of is no more than 0.01 and sampling distribution
We are interested in testing to see if the variance of a population is less than 7. The correct null hypothesis is:
Determine the mean and standard error of the x - bar distribution.
At the .05 significance level, can we conclude that the guideline is still reasonable?
The casino game craps is based on rolling two dice. Here is the assignment of probabilities to the sum of numbers on the up face when two dice are rolled:
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