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There are two types of dependent samples: Those that measure something before and after an "event" and those that matching two samples of the same phenomena being observed. Which of the following is NOT true about such a test:
a.We calculate the mean of the differences between the paired observations
b.We must calculate the standard deviation of their paired observation differences.
c.The variation of the differences of the paired samples is greater than when the two samples are considered to be independent of each other. This will result in a smaller likelihood of rejecting the null hypothesis.
d.The standard error of the paired, dependent statistic will result in a higher likelihood of rejecting the null hypothesis.
To evaluate the effect of a treatment , a sample of n=9 is obtained from a population with a mean of m=40 and the treatment is administered to the individuals is found to be M-33
Choice of exponential smoothing constant w has little or no effect on forecast values using exponential smoothing.
11.9% reported they were in fair or poor health, including 10.5% of the married people, 19.6% of widows, 16.7% of divorced or separated, 12.5% of those never married, and 14% of those living with an unmarried partner.
Given that the mean of 100 observations is 42.5 and that their standard deviation is 6.313, find the sum of the squares of the observations.
A baseball player gets a hit in 30 out of 100 times at bat. What is the probability that he gets a hit in his next at bat?
A local consultant randomly selects a sample of 36 meals whose mean price is determined to be $8.75. Assuming that σ = $0.75, calculate a 95% confidence interval for the population mean price.
Explain the difference between descriptive statistics and inferential statistics with less than 50 words? Name two graphs that can be used for describing qualitative data and two for describing quantitative data. Name one graph that can be used to ..
The life corn delight popcorn maker is normally distributed with them mean of 20 months and a standard deviation of two months. The manufacturer will replace on the life popper if it breaks during the guarantee period.
Find the maximum and minimum prices of the houses a contractor will build to include the middle 65% of the market.
A study published in the New England Journal of Medicine (Aug. 2001) suggests that it's dangerous to enter a hospital on a weekend. During a 10-year period, researchers tracked over 4 million emergency admissions to hospitals in Ontario, Canada. T..
Find the critical value for a two tailed F-test with alpha=.05 when the sample size from which the variance for the numerator was obtained was 21 and the sample size from which the variance for the denominator was obtained 12
Graph one shows a number of observations that are very spread out but generally trending from the top left of the graph to the bottom right.
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