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Ten pairs of points yielded a correlation coefficient of 0.790. If α = 0.05, which of the following statements is correct if H0 = ρ 0? (Do not calculate a t-value.)
A) Because 0.790 is greater than 0.632, the null hypothesis is not rejected.B) Because 0.790 is greater than 0.632, the null hypothesis is rejected.C) Because 0.790 is greater than 0.602, the null hypothesis is not rejected.D) There is no correlation between the variables.
Produce a printout of the frequency tables, showing the total of both frequencies.
Write a sample result section, discussing your data screening activity (this section should be in APA format).
Should the finite-population correction factor be used? Why or why not?
If the server has 40 customers in one shift, what is the probability that her total tips are less than $250? (Assume that these 40 customers represent a simple random sample).
If were interested in studying obesity in a small sample size of 10 adult men by looking at their body weights and heights, would you say that trimming the mean is a good idea? What are the advantages of trimming the mean in this situation? What a..
Sugar in Cereal. Different cereals are randomly selected, and the sugar content (grams of sugar per gram of cereal) is obtained for each cereal
The null hypothesis is to be tested at the 10% level of significance. The critical value from the table is:
At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.
You roll two fair dice, one red and one green. What is the probability of getting a number less than 5 on both?
Data from a National Health Survey show that men's average weight is normally distributed with a mean of 172 pounds and a standard deviation of 29 pounds.
significance level α = 0.01 and a degree of freedom = 11. In this situation, the null hypothesis that the observed distribution is the same as the expected distribution is?
a) What is the purpose of sampling? b) What are some concerns and dangers of sampling?
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