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Compute the population mean, the population median, the population midrange, the population range, the population variance, the population standard deviation, and the population proportion of odd numbers. Verify the following results:
μ = 6.4; Median = 7; Midrange = 6; Range = 10; 2σ= 11.04; σ ≈ 3.3226; p(odd numbers) = 4/5
The researchers gave each subject a battery of nine separate neurological and psychological examinations designed to assess their mental capabilities.
Correlation between the two variables based on scatter plot - Show the scatter plot for the variables.
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
A survey taken in a restaurant shows the following number of cups of coffee consumed with each meal. Construct an ungrouped frequency distribution.
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
At 95% confidence using the p- value approach, test the hypotheses. Let α = 0.1.
This is called a one-time fling. About 10% of all adults deliberately do a opne-time fling and feel no guilt about it!
A fair coin is flipped 3 times. Compute the odds of flipping 3 tails.
Find the probability between the given values for normal distribution.
Calculate a standard error for the sample mean production rate for the new method and what is the standard error of the $1600 estimate?
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop. Check the normality assumption.
Suppose also that the mean score on test A is 85, and the standard deviation is 10; the mean score on test B is 90, and the standard deviation is 16; the scores on the two tests have a bivariate normal distribution; and the correlation of the two ..
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