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A random sample of 16 students from the student body of a large university had an average age of 25 years and a sample standard deviation of 2 years. Test at a 5% level of significance to see if the average age of all the students at the university is significantly more than 24 years.
Compute the probability which we will get the sample mean greater than 21; which is , compute P(x > 21). Compute the probability that we will get the sample mean less than 19.385; that is, compute P(x
each day a large animal clinic schedules 10 horses to be tested for a common respiratory disease. the cost of each test
Find the probability that Marys total worth reaches $3000 at some point. (We assume here that Mary has to quit playing if she goes bankrupt so this is a gamblers ruin problem.)
If a correlation coefficient was calculated for n = 15, alpha = 0.01, and r = 0.85, what is the test value found using the t-test?
To estimate the mean of the population from sample information, we need to calculate the standard deviation of the distribution of the sample means around the population mean.
the grocery manufacturers of america reported that 76 of consumers read the ingredients listed on a products label.
Suppose your prior on θ isuniform on [0, 1] and that she then makes two shots in a row. Assume that the outcomes of thetwo shots are independent.
the mean incubation time for a type of fertilized egg kept at 100.3 f is 23 days. suppose that the incubation times are
Assuming these data are from two independent groups, calculate dfX, dfY, and dftotal for the data above. Determine the critical values for t based on the df you calculated for the question above, assuming a two-tailed test with a p level of 0.05.
A random sample of 5 parks is selected and the number of acres is shown at alpha= 0.05, find the critical value. 944, 1036, 790, 5842,566
The analysis of variances produces df between = 3 and df within = 24. For this analysis, determine df total ?
Calculate the correlation coefficient. What is the coefficient of determination from these sample statistics? What does this coefficient indicate?
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