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Listed below are the amounts of weight change (in pounds) for 12 women during their first year of work after graduating from college. Positive values correspond to women who gained weight and negative values correspond to women who lost weight. What is the mean weight change?
1 -10 1 -9 17 -5 12 0 16 -4 18 7
The numbers listed below represent the amount of precipitation (in inches) last year in six different U.S. cities.
20.7 21.9 46.2 35.9 17.4 24.5
Listed below are the amounts of weight change (in pounds) for ten women during their first year of work after graduating from college. Positive values correspond to women who gained weight and negative values correspond to women who lost weight. What is the range?
3 9 5 12 -1 25 0 -4 7 -1
Andrew asked seven of his friends how many cousins they had. The results are listed below. Find the mean number of cousins.
16 11 4 9 5 2 8
The number of vehicles passing through a bank drive-up line during each 15-minute period was recorded. The results are shown below. Find the median number of vehicles going through the line in a fifteen-minute period.
22 24 22 25
25 22 27 24
32 28 28 26
21 28 22 17
12 24 24 24
Alex and Juana went on a 70-mile canoe trip with their class. On the first day they traveled 14 miles. What percent of the total distance did they canoe?
Among nonsmokers, what percentage were pregnant after the first cycle?- Draw a bar graph that can be used to examine the relationship between smoking and how long it took to get pregnant.
in pharmacologic research a variety of clinical chemistry measurements are routinely monitored closely for evidence of
30 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.
ABC Manufacturing has six machines that perform particular task. Breakdowns happens frequently for this machine. Past records indicate that the number of breakdowns that happen each day is described by the probability distribution seen below:
a skeptical paranormal researcher claims the proportion of americans that have seen a ufo p is less than 1 in every one
consider the following hypothesis test.h0 u1-u2 0ha u1-u2 not equal to 0the following results are for two independent
the distribution of the sum of independent n? ?2 random variables isa. always approximately normalb. always exactly
Create a dot plot and a box plot to represent this data. If we create a sample by picking every 3rd data from the population, how would your answer to part a change? Show your work
Assume the Alpha group had a standard deviation of $20 million and the Beta group had a standard deviation of $8 million. Construct a 95% confidence interval for the difference in mean portfolio size for firms in the two groups of credit ratings.
Effective on 80% of women and 65% of men. it is known that 66% of the people who take drug are women. That is the probability that the drug is effective?
question pizza hut wishes to find the 90 confidence interval of the true mean cost of a medium veggie pizza. how large
Verify that for the data in given Exercise, if you use Y‾ = 2X - 9, the sum of the squared residuals is larger than 47. Why would you expect a value greater than 47?
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