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1.) The number of credits being taken by a sample of 12? full-time college students are listed below. Find the? mean, median, and mode of the? data, if possible.
11 12 12 9 8 8 8 10 8 8 9 6
2.) The ages? (in years) of a random sample of elementary school kids are shown. Determine the? range, variance, and standard deviation of the sample data set.
6 8 7 9 6 5
3.) A modified boxplot is a boxplot that uses symbols to identify outliers. The horizontal line of a modified boxplot extends as far as the minimum data entry that is not an outlier and the maximum data entry that is not an outlier.? (a) Identify any outliers and? (b) draw a modified boxplot that represents the data set. Use a cross ?(times ×?) to plot any outliers.
52
9
39
51
58
54
95
88
62
30
45
61
48
63
78
37
43
91
Identify any possible outliers.
a box of 1000 stuffed dinosaurs contains 100 that are missing their tails oh no. two dinos are drawn at random and
A kitchen knife with a sharpness measure of at least 100 mm qualifies as a steak knife. What proportion of kitchen knives are steak knives?
How accurate are radon detectors of a type sold to homeowners? To answer this question, university researchers placed 12 detectors in a chamber that exposed them to 105 picocuries per liter (pCi/l) of radon. Graph the data, and comment on skewness..
a. Are there any constraints on the choice of a for f(x) to be a probability density function? If so, precisely what are they? b. Is the random variable X a discrete or a continuous random variable? Why?
assume that the population of heights of male college students is approximately normally distributed with mean m of
find the probability that the amount of coffee is less than 12.0 oz, between 11.2 oz and 12.7 oz, greater than 12.2 oz and between 11.9 oz and 12.0 oz.
The corporation there's a pretty good chance the average number of days absent would be 12 or more. that's what happened to us chance variation. Is this a good defense? Justify your answer.
six liters 0.006 m3 of liquid h2o at 32 c mass a and one liter 0.001 m3 of solid h2o ice at -32 c mass b are sealed in
What assumptions must be made in order to use the normal distribution for inference?
Create a tree diagram for this situation.- Create a "hypothetical hundred thousand" table for this situation.- Using the tree diagram from part (a) or the table from part (b), find the percent of customers who are no-shows.
Travel and Transportation The Channel Tunnel, or Chunnel, is a 31.4-mile railroad tunnel beneath the EnglishChannel between Folkstone, Kent
Based on the observed frequencies given below, what is an appropriate conclusion for this test at a .05 level of significance?
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