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Discuss how the null and alternative hypothesis for one-sample testing differs from two-sample testing; and explain how these two hypothesis' are the same, and provide a numerical example?
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Calculate the z - scores for the three samples, compare the z score to the t-statistic, is the null hypothesis accepted or rejected?
The event "the price of stock X has increased and the price of stock Y has not increased" may be written as??
In a simple linear regression analysis of 18 data points the following ANOVA table was found.
Determine the coefficient of determination R 2 . Determine standard error of the estimate s e .
Find the critical value for different types of sample size and level of significance:
Similar survey of student population 10 years ago found that coffee shop was favoured by 20% of students, and pizza and hamburger were each preferred by 40% of the students. Determine the expected frequencies for chi-square test.
Among 500 freshmen pursuing a business degree at a university, 347 are enrolled in an economics course, 204 are enrolled in a mathematics course, and 160 are enrolled in both an economics and a mathematics course.
The mean return for the random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Test the null hypothesis: H0: mu = 15% at α = 0.05.
The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?
Examine the behaviour of 99% critical values for these degrees of freedom, and comment on the limits in this case.
Formulating null and alternative hypothesis to test the claim averaging about $5000.
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