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Suppose the data represent the inches of rainfall in April for a certain city over the course of 20 years.
(a) Determine the quartiles
(b) Compute the interquartile range, IQR
(c) Determine the lower and upper fences. Are there any outliners According to the criterion
0.74 2.42 3.93 5.19
1.01 2.74 4.27 5.34
1.51 3.05 4.39 5.73
1.96 3.37 4.59 6.06
2.12 3.58 4.71 6.25
Find the weighted mean of three test scores for a student (85, 90, 75) where the first test counts for 20%, the second test counts for 30%, and the third counts for 50% of the final grade.
the prevalence of tuberculosis in cows is known to be 6. in a randomly chosen sample of 100 cows from a herd of 5000
assume that you have a sample of n18with the sample mean xbar1 42and a sample standard deviation of s1 4and you have
The population of SAT scores forms a normal distribution with a mean of µ=500 and a standard deviation of o =100. If the average SAT score is calculated for a sample of n=25 students,
The city of Oakdale wishes to see if there is a linear relationship between the temperature and the amount of electricity used (in kilowatts).
Find the probability that 5 randomly selected high school students will say that they exercise regularly. Express your answer for this item in percent.
Compare population means or proportions to determine the relationship between variables.
a financial executive lives in ottawa but frequently must travel to toronto. she can go to toronto by car train or
A state meat inspector in Iowa has been given the assignment of estimating the mean net weight of packages of ground chuck labeled “3 pounds.” Of course, he realizes that the weights cannot be precisely 3 pounds. A sample of 36 packages reveals the m..
Discuss why the 90% and 99% confidence intervals are different. What would you expect to happen to the confidence interval in part A if the sample size was increased?
Which of the 4 methods of data collection is involved when a person counts the number of cars passing designated location on the Los Angeles freeway system?
For a binomial probability experiment, if p is 0.1 and n is only 150, we cannot use the normal approximation to the binomial distribution without continuity correction.
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