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Assume a researcher compared the performance of two independent groups of participants on an ordinal variable using the Mann-Whitney U test. The first group had 8 participants and the second group had 11 participants.
a. Using a p level of 0.05 and a two-tailed test, what is the critical value?
b. Assume the researcher calculated U1 = 22 and U2 = 17. Make a decision regarding the null hypothesis and explain that decision.
c. Assume the researcher calculated U1 = 24 and U2 = 30. Make a decision regarding the null hypothesis and explain that decision.
d. Assume the researcher calculated U1 = 13 and U2 = 9. Make a decision regarding the null hypothesis and explain that decision.
what percent of the total population is found between the mean and the z-score given? use the standard normal
when a result is not extreme enough to reject the null hypothesis explain why it is wrong to conclude that your result
Find the probability that the 3rd club is drawn on the 8th selection. - Find the probability that at least 8 cards are drawn before the 3rd club appears.
Discuss three measures of central tendency for the dependent variable. Is this distribution skewed? If so, in what direction? Explain your answer. Why would you NOT attempt to determine the central tendency of the independent variables?
a. What is the probability that the number of items produced is at most 120? b. What is the probability that at least 125 items are produced? c. What is the probability that between 135 and 160 (inclusive) items are produced?
Calculate the Regression for Abortion Restrictions and Church Attendance
the null hypothesis is rejected, make a one-sentence managerial conclusion - Dr. Johnson is a new professor teaching "Basic Business Statistics" for the first time this semester.
A regional director responsible for business development in the state of pennsylvania is cocerned about the number of small business failures. If the mean of small businsses failures per month is 10,
OHIP records show the average length of stay in Ontario hospitals is 5.4 days. A researcher sampled 125 patient records at US hospitals and found that the mean stay was 4.6 days
suppose you have a bag with five tickets labeled 1224 and 8. the experiment is to draw two tickets from the bag with
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
let xn1.32 the proportion and find the proportiona. propxlt2.85b. propxgt3c. prop1.33ltxlt5.3d.
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