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Question: Give the name of the kind of sampling that was most likely used in each of the following cases:
a. a Wall Street Journal poll of 2,000 people to determine the president's approval rating
b. a poll taken of each of the General Motors (GM) dealerships in Ohio in December to determine an estimate of the average number of Chevrolets not yet sold by GM dealerships in the United States
c. a quality-assurance procedure within a Frito-Lay manufacturing plant that tests every 1,000th bag of Fritos Corn Chips produced to make sure the bag is sealed properly
d. a sampling technique in which a random sample from each of the tax brackets is obtained by the Internal Revenue Service to audit tax returns
the incomes in a certain large population of college teachers have a normal distribution with mean 75000 and standard
For a Shewhart control chart using 3-sigma limits,
Of the 500 students who responded to a survey about recycling on campus, 350 said they recycle on a regular basis. The sample proportion is ??
let x be the discrete r.v. with the following probability distribution.a calculate ex.b calculate micro.c calculate
Find and interpret a 98% confidence interval for the mean number of animals visited by a veterinarian per day.
The question belongs to Basic Statistics and it discuss about creating alternate hypothesis for null hypothesis in research
In terms of the standard scores for both sections, the score of which section was better? What are the z-scores for both sections?
nile superstore is conducting a survery of consumer preferences for a new wireless e-book reader. 160 people reveals
Do you think the actual number in the " ≤ 140" range would equal the expected number in this range? If so, why? If not, why not?
Cletus Inc. plans to overhaul the cafeteria menu and has formed a four person team to evaluate alternatives. Calculate the importance score sum for option A?
Given the following data, calculate the EMV for each investment alternative. Which is best based on the EMVs you calculated?
Problem: In hypothesis testing, what is the statistical power?
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