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Which of the following would be an example of a design that examines the effects gender and school type (i.e. elementary, middle, high school) on a scale of student attitudes toward learning?
Choose one answer.
a. Simple ANOVA
b. 2x3 ANOVA
c. 2 x 2 ANOVA
d. 3 x 3 ANOVA
A random sample of 100 people was taken. Eighty of the people in the sample favored candidate A. The 95% confidence interval for the true proportion of people who favor Candidate A is?
Based on the custom "rule-of-thumb" for estimating the standard deviation, if the range of prices for a product sold in Kansas City is between $99 and $349, an estimate of the standard deviation of the prices would be about:
The confidence interval must be less than 5 percentage points i.e. the confidence interval should extend at most 2.5 percentage points above and below the sample proportion?
Standard deviation of 1.8 years, and the distribution is approximately normal. if an employee is picked at random, what is the probability that the employee has worked at the store for over 10 years?
A normal curve with a mean of 15.0 gal and standard deviation of 0.1 gal. What is the probability that a randomly selected tank will hold.
If p is the probability of Event 1 and (1-p) is the probability of Event 2, based on the expected returns, for what values of p would you select A? B? C? Values in the table are payoffs.
Assuming no discrimination based on gender, what is the probability of getting 41 or fewer women when 100 new employees are hired?
List and describe the three assumptions of ANOVA. When should researchers use different hypothesis tests for independent and related samples? What is the difference between a one-way-ANOVA and a two-way-ANOVA?
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error??
Rental car gasoline prices per gallon were sampled at eight major airports. Date for Hertz and National car rental companies follow (USA today April 4, 2000)
Can the formal hypothesis testing approach be used for non parametric tests? How are parametric and nonparametric statistics different?
Find out the correlation among the two variables in the regression. A simple linear regression produced the following computer output.
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