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Enclosed table compares numbers of citations written by six different police officers.
Simmons 61
Hunt 37
Johnson 42
Alves 59
Smith 45
Wilson 64
Can we conclude that there is a difference in number of citations written between the officers? Use the 0.05 level of significance.
Use population distribution to determine expected juror frequencies. Test researcher's claim at a = 0.01.
At the .05 significance level, can we conclude that the guideline is still reasonable?
A confidence interval for the population mean tells us which values of mean are plausible (those inside the interval) and which values are not plausible (those outside the interval) at the chosen level of confidence.
The heights of 18 year old men are approximately normally distributed with mean 68 inches and a SD of 3 inches.
An analysis of 1,000 cellular phone calls made from company phones at the offices of Kant, Taekitini, Moore, LLC reveals that the length of these calls is normally distributed, with m = 240 seconds and s = 40 seconds.
Test the mean cholesterol content in the egg is greater than 2.5 percent
Consider the following exponential probability density function: This number represents the time between arrivals of customers at the drive-up window of a bank.
Obtain a test statistic and p-value assuming equal variances. Interpret these results.
What is the 95% confidence interval estimate for the difference between the mean reflectivity reading for Paint A and Paint B? Please complete the blank: "we can be 95% confident that the true difference between the actual means is?
A coin was flipped twenty times and landed heads fifteen times. Based upon this information, answer the following the question:
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Compute the standard error of the proportion.
Multiple choice question based on multiple regression - The coefficient of determination for this model is
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