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A chi-square goodness-of-fit test is to be performed. The relative frequencies for the null hyupothesis and the sample size are given. True or false, the assumptions for using a chi-square goodness-of-fit test are satisfied?
Sample size: n=80
Relative frequencies: 0.26, 0.01, 0.4, 0.12, 0.21
Develop a probability for the number of students in the sample who watch soap operas.
Five students took a math test before and after tutoring. Their scores were as follows. Using a 0.01 level of significance, test the claim that the tutoring has an effect on the math scores.
Salaries upon graduating than are graduates of other programs. Describe a statistical experiment that could help test your belief.
Construct a test of 20 objective type items in your subject. Administer test to a group of 50 students conduct an item analysis and write a report. Explain the meaning of co-efficient of correlation. Why does the homogeneity and heterogeneity of sco..
To determine whether there exists mean difference among the groups:
question suppose that 11 individuals take the gmat graduate management admission test then take a gmat preparation
Among Americans who are auto racing fans, 59% identify NASCAR as their favorite type of racing. What is the probability that all four have NASCAR as their favorite?
A standard deviation of $12. Three solar homes reported monthly utility bills of $55, $53, and $51. Which of the following statements is true?
The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..
Verify that the fitted values have the same mean as the actual y-values, and that the residuals have mean zero and show that the variance of the fitted values plus the variance of the residuals adds up to the variance of y. Find the R-squared.
Likert scale- based questionnaire & responses for 30 respondents showing the number of respondents for each respond option
You may assume the sample data comes from a population that follows a normal distribution. Using a .05 level of significance test the company's claim.
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