Description
When a number was multiplied by 4 and then this product decreased by 17 , the result was 1 less than three times the number. Find the number.
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Explanation & Answer
let the number be y
4y-17=3y-1
y=16....................................................................................................................................................................
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A computer scanner can read a bar code on a package correctly 97% of the time. O ...
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Week 6 Activity
Sampling Distribution
A computer scanner can read a bar code on a package correctly 97% of the time. One company monitors the accuracy of the scanner by randomly sampling packages and verifying that each package has been correctly scanned. Random samples of size n = 25, 50, 100, and 200 have recently been taken with the following results.
Sample Size, n
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25
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50
49
100
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193
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1. Calculate the sample proportion for each sample size.
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Hypothesis Testing
The Lazer Company has a contract to produce a part for Boeing Corporation that must have an average diameter of 6 inches and a standard deviation of 0.10 inch. The Lazer Company has developed a process that will meet the specifications with respect to the standard deviation, but it is still trying to meet the mean specifications. A test run (considered a random sample) of parts was produced, and the company wishes to determine whether this latest process that produced the sample will produce parts meeting the requirement of an average diameter equal to 6 inches.
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1.Construct the appropriate null and alternative hypotheses with correct parameters.
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In a Word document:
3. Recommend what the Lazer Company should conclude if the sample mean diameter for the 200 parts is 6.03 inches.
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