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A random sample of 22 cans from Y store had a mean of $12.03 and a standard deviation of $3.86. A random sample of 25 cans from Z store had a mean of $14.05 and a standard deviation of $4.02. probablility of Type I error = .05, does the data support the claim that cans are less expensive at Y store?
Prepare an analysis of how you developed your instrument. The survey instrument is supposed to determine the level of self confidence in the participant.
Test at .01 level of significance if mean number of number of calories for Brand A 16 oz. yogurt cups is greater than mean calories for Brand B 16 oz. yogurt cups.
The average efficiency of the sample is calculated to be 91.0% and the standard deviation of the sample is 0.8%. If we want to cut the confidence interval by one-half, how many more motors should be tested?
At a large department store, the amount a shopper spent and the shopper's gender (male or female) were recorded. To determine if gender is useful in explaining the amount of money a shopper spends at the store we could
according to student monitor a new jersey research firm the average cumulated college student loan debt for a
Fawns Fawns among1 or 5 months old in Mesa Verde National Park have a body weight that is approximately normally distributed with mean
Calculate the 90% confidence interval for the population mean of health men's pulse (sphygmus) in mountainous area.
Use this sample information to develop a 99% confidence interval for the population proportion of women who wear flats to work.
A certain type of tomato seed germinates 90% of the time. A backyard farmer planted 25 seeds. What is the probability that exactly 20 germinate?
Too much cholesterol in the blood increases the risk of heart disease. Young women are generally less afflicted by high cholesterol than other groups. The cholesterol levels for women aged 20 to 34 follow an approximately Normal distribution with mea..
Conduct a mini-meta-analysis. There is really no such thing as a mini-meta-analysis, but you don't have time to conduct a full meta-analysis.
question two different methods were used to determine the yield of a chemical. the experiment was run using eight
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