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The mean height of women in a country (age 20-29) is 64.3 inches. A random sample of 75 women in this age group is selected. what is the probablity that the mean height for the sample is greater than 65 inches?
When using the distribution of sample means to estimate the population mean, what is the benefit of using larger sample sizes?
A U.S. Travel Data Center survey of 1500 adults found that 42% of respondents stated that they favor historical sites as vacations. Find the 99% confidence interval of the true proportion of adults who favor visiting historical sites as vacations.
The Greenberg public hearing meeting turned stormy. Citizens from four suburbs were gathered at city hall to try to get the city's federal funds for their own suburbs. The government recently awarded $750,000 to the city for road improvements. The..
Address additional types of quantitative research recommendation to enhance the validity and reliability of the research findings.
Kyle averages 7 finished accounts a day. His standard deviation is 2 account per day and we wish the probability that Kyle will finish day with more than 8 finished accounts. Probability will be?
If you wish to estimate a population mean with a sampling distribution error SE = 0.28 using a 95% confidence interval and you know from prior sampling that sigma^2 is approximately equal to 5.4, how many observations would have to be included in ..
Under what circumatances do you use a one-sided confidence interval instead of a 2 sided confidence interval?
11% needed to be serviced once, 5% twice, 4% three times, and none required more than three repairs. what are the expected no of repairs per year.
Is it sensible to conclude that mean weekly salary of school teachers is lower at .05 level of significance? Explain why?
Your employer asks you to determine whether current salaries (DV) can be predicted from years of experience (IV) What is the right statistical test one should use and why?
SmartPeople is an organization that only admits people with IQ's in the top 98 percentile. What IQ score would a person need to be a member of SmartPeople?
Is it reasonable typical worker does not miss any days during a pay period?
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