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M&M's weigh 0.86 grams on average with SD = 0.04 grams, so the coefficient of variation is 0.04/0.86 0.047. Suppose that we decide to label packages by count rather than weight. The system adds candy to a package until the weight of the package exceeds a threshold. How large would we have to set the threshold weight to be 99.5% sure that a package has 60 pieces?
An experimenter wants to conduct a hypothesis test on a claim that there was no differencebetween two population means. That is, H0: μ1 - μ2 = 0. Which of the following 95% confidenceintervals on the difference, μ1 - μ2, would lead to rejectio..
Reflection to date
Uncle Henry has been having trouble keeping his weight constant. In fact, at the end of each week, he notices that his weight has changed by a random amount, uniformly distributed between ?0.5 and 0.5 pounds.
Calculate the ANOVA table for the model, which you have determined. What is the estimate of the variance in the electric power measurement?
Using the five steps of hypothesis testing
What is the Z score of a child eating 20 treats - what is the Z score of a child eating 5 treats and faculty or administrative staff member
Find the area under the normal distribution curve between z = -0.05 and z = 2.85.
Estimate the difference between the proportion of the population of low birth weight children and the proportion of the population of normal birth weight children who graduate from high school. Report a standard error for your estimate.
How many of the data values will fall within the range
This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. Fisher's exact test, Cramer's V, Yates' correction or Regression
Give the 95% confidence interval.
A simple random sample of 40 salaries of NCAA football coaches has a mean of $415,953 and a standard deviation of $463,364. Construct a 95% confidence interval estimate of the mean salary of an NCAA football coach.
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