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A randon sample of monthly gasoline bills for a company's 15 sales persons are:$216-254-247-257-231-265-221-226-228-252-235-265-272-285-266. what is the mean? what is the median? what is the value of quartile 3? what is the value of the mode? the range is equal to? what is the value of the standard deviation? what is the value of the coefficient of variation? do not express the answer as a percent, leave it as a ratio, eg .123are the numbers skewed positively, negatively or are they symmetrical? (for your answer enter only one word: positively, negatively or symmetrical. what is the value of the coefficient of skewness using pearson's coefficient of skewness? what is the value of quartile 2?
Explain the important points of the Central Limit Theorem.
Estimate the difference between the proportion of the population of low birth weight children and the proportion of the population of normal birth weight children who graduate from high school. Report a standard error for your estimate.
Suppose that the New England Colonials baseball team is equally likely to win any particular game as not to win it. Suppose also that we choose a random sample of Colonials games.
Are they weak or strong correlations - what is the significance value and what does the significance value reveal about the data we have used?
State the Null Hypothesis, State the Alternatice Hypothesis and state the Level of significance - State the Test Statistic - Does the data indicate that the mean remission time using the new drug is different from 12.5 week at a level of significanc..
a. Calculate the range and the standard deviation. (Use either definition for the range) b. Add 2 points to each score and compute the range and the standard deviation again. Describe how adding a constant to each score influences..
Find the number of people who will score between 458 and 556.
Regression and Correlation Methods: Correlation, ANOVA, and Least Squares - Calculate a one-way ANOVA to test the null hypothesis that the mean of each group is the same.
Pistorius had been arrested in 2009 for violent conduct involving a young woman, and he was also once investigated for illegal ownership of .38 caliber ammunition that defense lawyers said belonged to his father. An autopsy meanwhile found no signs o..
Political polls typically sample randomly from the U.S population to investigate the percentage of voters who favor some candidate or issue. The number of people polled is usually on the order of 1000. Suppose that one such poll asks voters how they ..
What does p = .05 mean? What are some misconceptions about the meaning of p = .05? Why are they wrong? Should all research adhere to the p = .05 standard for significance? Why or why not?
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