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A quality control engineer at a potato chip company tests the bag-filling machine by weighing bags of potato chips. Not every bag contains exactly the same weight. But if more than 15% of bags are overfilled, then they stop production to fix the machine.
They define overfilled to be more than 1 ounce above the weight on the package. The engineer weighs 100 bags and finds that 21 of them are overfilled.
He plans to test the hypotheses: H0: p = 0.15 versus Ha: p > 0.15 (where p is the true proportion of overfilled bags).
What is the test statistic?
Find the probability of drawing a diamond card in each of the consecutive draws from a wellshuffled pack of cards, if the card drawn is not replaced after the first draw.
Test the hypothesis that there is not relationship between the proneness to use excessive force score and the force score for officers trained at Academy A.
1) A coin is flipped 14 times. Use the normal approximation to the binomial distribution to calculate the probability of a total of 4,5, or 6 heads. Compare this to the binomial probability.
Select two variables that might be related, such as the number of hours a student watches TV and the number of credits the student has, or a baseball player's salary and the number of home runs per year the player scores. You will need to get..
Produce boxplots to compare the selection times for each participant. Comment on what they reveal. Also identify (by initial) which participant took the longest and which took the shortest time to make their decisions.
Explain the difference between standard deviation and standard error of measurement. Is one more effective than the other? Why? Give an example of the appropriate use of each
Explain or predict the response variable in every regression study, we use one or more explanatory variables. These variables are also called predictor variables or independent variables.
Provide confidence intervals for the following. (assume sample size/ normality conditions hold 95%CI with meanx ¯=10,s^2 =9,n=11.
Run the Wilcoxon rank-sum test to show whether there is a statistically significant difference between the mortality rates of children under the age of five years of the regions
A bird lands on a power line of length L
the westhouser paper company in the state of washington currently has an option to purchase a piece of good timber
Accepting Manipulation or Manipulating
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