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Suppose that the skewness associated with the residuals from a multiple regression of 88 observations is -0.3 and the excess kurtosis is
1.2. Using the Jarque-Bera normality test:
A. we can reject the null hypothesis that the disturbances are normally distributed at the five-percent level of significance.
B. we can reject the null hypothesis that the disturbances are normally at both the five-percent and one-percent significance levels.
C. we cannot reject the null hypothesis that the disturbances are normally distributed at either the five-percent or one-percent significance levels.
D. we can reject the null hypothesis that the disturbances are not normally distributed at the five-percent level of significancePlease show me how you got your answer
twenty-five samples of 100 items each were inspected when a process was considered to be operating satisfactorily. in
Construct a 90% confidence interval for the population proportion, p, in order to test the claim from a confidence interval point of view. What is the best point estimate for p?
Assuming that the data is normally distributed and the sample size is greater than 30, calculate the critical values for a two tailed and a one-tailed test when alpha = 0.05
what is the probability of generating a password with all lowercase letters if a password consists of eight characters
A recent study, "[b]ased on data from a survey of nearly 1,500 Boston men aged 18 to 35 years...found that 16 percent of the men - about one in six -- said they had abused their partner physically or sexually within the past year.
A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 60%.
A random sample of 20 students obtained a mean of x = 72 and a variance of s2 = 16 on a college placement test in mathematics. Assuming the scores to be normally distributed, construct a 98% confidence interval for sigma^2.
a study of 35 browns gerbils showed that their average weight was 4.7 ounces. the standard deviation of the population
Angioplasty is a medical procedure in which an obstructed blood vessel is widened. In some cases, a wire mesh tube, called a stent, is placed in the vessel to help it remain open.
The point of averages of a scatterplot of Y against X is (14, 1 ). The SD of X is 6, and the SD of Y is 7.
Find out sample correlation coefficients of (I) age with dry weight, and (2) age with log 10 dry weight. Interpret your results.
Can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months? Perform a two-tailed test.
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