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1. Nonparametric tests are used when
A. the data are normal.B. the data are skewed.C. the data are counts.
2. The Kruskal-Wallis rank test is a nonparametric replacement for
A. a paired t test.B. two independent samples t test.C. one-way ANOVA.
3. The Wilcoxon rank sum test tests a null hypothesis that
A. the two distributions have the same mean.B. the two distributions have the same median.C. the two distributions are the same.
4. A sample of breakfast cereals yields the following data on the grams of carbohydrates per serving.
19 23 26 21 25 28 24 23 23 13 25 26
The rank assigned to a cereal with 25 grams isA. 8.B. 8.5.C. 9.
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
Suppose we wish to predict the crawling age of a particular baby when the average outdoor temperature is 25°F six months after birth.
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
I have computed an analysis of variance for three groups with 10 observations per group. Evaluate the degrees of freedom for the F test
Investigate the cost of a home mortgage and to determine the monthly payment.
The variable recorded for each subject was the number of additional yards (possibly negative) that the subject could drive the ball by the end of the season. In the two-way ANOVA the DFM
It has been claimed that women live longer than men; however, men tend to be older than their wives. Ages of sixteen husbands and wives from England were obtained. These data should be analyzed with a
What is the probability the average of the sample is more than $38000 and What is the standard deviation of the sample mean
What statistical procedure was used to analyze data in study B?
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
Examined the effect of body position on blood pressure
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