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Normal distributions are extremely important in stats.
In a standard normal dist. what is the prob. of getting a value less than 1.63?How about between 1.13 and 1.86?How about greater than .58?
In a normal dist. with mean = 40 and std.dev. = 13, what is the prob. of getting a value less than 45?How about between 33 and 52?How about greater than 21?
Perform a contingency analysis on the data to determine if there is any dependency between the number of level of education attained by the father and the size of his family.
Find the mean and standard deviation for the population and population of exam scores
A sample of 50 retirees is drawn at random from a normal population whose mean age and standard deviation are 75 and 6 years, respectively.
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
If the city manager knows the average salary nationally is $38,300, which test of significance should be used? Why?
Critically discuss the difference between the standard deviation of the sampling distribution of the mean and the standard deviation of the sampling distribution of the median when we calculate the probability?
A 56-question multiple choice test has 4 possible answers for each question and a student chooses the answers to each problem at random. A student selects 16 correct answers.
A company's net sales is $ million from 1993-2002, determine the least squares equation and based on this info, what are the estimated sales for 2005?
The director of Heating and Oil at Mitchell Brothers Company is concerned about the high cost of home heating oil being offered to their customers for the upcoming Fall season in Boston, MA. The company has no possibility of modifying the oil pri..
What are three lessons learned relative ANOVA and Nonparametric tests? What concepts and analytic tools will you be able to use in your workplace ?
In a study of 10 graduate students from a nurse education program, the average age of the group was 48.6 years and the standard deviation was 4.1 years. Assume the variable is normally distributed. Find the 95% confidence interval of the true mean..
Is there evidence that teams with higher total payrolls tend to be more successful? Justify your answer.
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