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A Gallup Poll used telephone interviews to survey a sample of 1025 U.S. residents over the age of 18 regarding their use of credit cards. The poll reported that 76% of Americans said that they had at least one credit card. Give the 95% margin of error for this estimate.
Find the standard deviation of the sampling distribution of the sample mean.
the following data summarize the results from an independent-measures study comparing three treatment
SPC is one of a number of tools which can be used to improve manufacturing quality standards - Outline two techniques which can be used to decide where to put SPC effort most effectively.
Are they weak or strong correlations - what is the significance value and what does the significance value reveal about the data we have used?
Write up your lab experience including: the necessary steps (broadly, not detail with keystrokes) to collectpersistent data, the ease of use of the software
The sample average number of strokes being more than 5.0.
3. hypothesis testing 15 marks should the cbc hire celebrities for their movies? to answer this question run a
For a normal distribution, the z-score boundary that separates the lowest 2.5% of the scores from the rest is z = -1.96
first save this file to your computer. answer each of the following questions then resave the file along with your
University Number of Students
Heights of swedish men follow a normal distribution with mean 72 in and standard deviation of 5 in. How high must a doorway be so that 90% of swedish men can go through without having to bend?
This variable represents the number of machine breakdowns during a day, based on this simulation run, what is the average number of breakdowns per day?
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