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The following information is obtained from two independent samples.
Sample 1:
15
8
12
4
10
13
7
6
14
11
Sample 2:
18
19
17
16
Test at 1% signi?cance level that the median for sample 1 is less than the median for sample 2 and interpret the meaning of your result.
The cost for the conference room, instructor compensation, lab assistants, and promotion is $9,600. Micromedia rents computers for its seminars at a cost of $60 per computer per day. Question: find the breakeven point for this problem using Excel.
the mampm mars company claims that the percentage of brown mampms they produce is 13. a bag containing 100 mampms was
A professor is targeting a score of 80 on an exam. His forty-nine students averaged 78 on an exam with s = 7. Are the scores significantly less than 80 at a significance level of 0.05?
Testing for population proportion - evidence that the proportion of data processing clerks who have gone through the new training and are no longer employed is less than .25?
A researcher conductued a study of the access speed of 35 hard drives and concluded that his maximum error of estimate was 35. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he ..
the average price of homes sold in the u.s. in the past year was 220000. a random sample of 81 homes sold this year
Sampling seventy-two percent of americans squeeze their toothpaste tube from the top. This and other not so serious finding are included in The first really important survey of american habits.
Use the sample data to construct a 95% confidence interval estimate of the difference between the two rates of lost baggage. Does there appear to be a difference?
a mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed with a mean life of
Use the mean, median, and mode to make a statement about the difference in performance for city and highway driving.
The sample mean is 60 kilograms (kg). Suppose that the mean weights of male runners follow a normal distribution with unknown mean mu and standard deviation of 5 kg (sigma). What is the 95% confidence interval for mu?
In this the anniversary of the sinking of the Titanic, it is interesting to look at the distribution of those who survived, and those who died. The table below describes the number of men, women and children who were passengers on the Titanic.
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