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For a group of 10 men subjected to a stress situation, the mean number of heartbeats per minute was 126, and the standard deviation was 4. Find the 95% confidence interval of the true mean.
Transportation problem using the stepping stone method
Correlation between the two variables - Evaluate the value of the correlation coefficient.
When using the F-statistic for hypothesis testing of the variance, which sample variance is the numerator and which sample variance is the denominator?
Use a calculator with mean and standard deviation keys to verify that the sample mean is x = 5.63 pups with the sample standard deviation s = 1.78 pups. (b) Find a 75% confidence interval for the population.
A statistical analysis of 1,000 long-distance calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed with μ = 240 seconds and σ = 40 seconds.
At.01 level of significance, is proportion of seeds which germinate dependent on seed type?
Normal distribution has mean of 80 and standard deviation of 14. Find out the value above which 80 percent of values will occur.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Write the linear regression equation to forecast father's education from mother's education?
Determine margin of error for confidence interval in (a)?
Is it sensible to conclude that this set of n=16 people is not representative random sample of registered voters?
A person reads a research study of the effectiveness of perineal exercises in preventing urinary incontinence and notes that the number of subjects in each group is 120.
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