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Calculate the degrees of freedom for the test of equality of population means of two samples.
Two independent samples of sizes 16 and 26 were taken. In a test of equality of population means of the two samples, how many degrees of freedom are associated with the critical t-value?
(1) 44
(2) 41
(3) 43
(4) 40
(5) 42
Is there a significant difference the four testing conditions?
To determine monthly rental prices of apartment units in San Francisco Bay area, samples were constructed in the following ways. Identify the technique used to produce each sample.
Determine the mean and the standard deviation of the sample.
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
Create a 95% confidence interval for population mean. Is it sensible that population mean is 28 weeks? give explanation for your answer.
The following data from a sample of 100 families show the record of college attendance by fathers and their oldest sons: in 22 families, both father and son attended college; in 31 families, neither father nor son attended college; in 12 families,..
Determine marginal probability distributions of X and Y . Compute conditional probability P ( Y = 2 | X = 1)
Calculate the probability of a value between 75.0 and 90.Calculate the probability of a value of 75.0 and less.
Use this information to compute a 95% confidence interval for average number of credit cards carried by students.
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
Using the menu systems, request descriptive statistics (mean, s.d. and variance) for both your original variables
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
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