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Select 3 differently shaped flowers from a florist or grocery store - (Walmart even has a decent selection - a lily, a carnation, and a snapdragon are all nice and very different from one another).
Is the proportion of men who felt that division of housework was fair greater than the proportion of women who felt the division of housework was fair? Use alpha = .05 for the test.
The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?
Evaluate the area under the standard normal curve that lies to the left of z = - 3.49 and simple random sample of size
What critical value should the company officials use to determine the rejection region?
Ssample by constructing a histogram and finding the sample mean and standard deviation, are we investigating the sampling distribution of the mean? why or why not?
State the main points of the Central Limit Theorem for a mean. Why is population shape of concern when estimating a mean? What does sample size have to do with it?"
A random sample of eight cars from each manufacturer is selected, and eight drivers are selected to drive each automobile for a specified distance.
Illustrate what can we say about the probability distribution. Is it approximately normal, elucidate the mean and standard deviation.
Calculate the coefficient of determination, given that the linear correlation coefficient, r, is -0.625. What does this tell you about the explained variation and the unexplained variation of the data about the regression line?
Suppose the salary of assembly line workers has Normal distribution with mean of $20,000, and standard deviation of $3,000.
The response variable is the change in cholesterol level after two months of treatment. An analysis of variance will be used to compare the three treatments. What null hypothesis is tested by this ANOVA F-test?
The average price of a sample of 12 bottles of diet salad dressing taken from different stores is $1.43. The standard deviation is $0.09. The average price of a sample of 16 low-calorie frozen desserts is $1.03.
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