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A tire company produced a batch of 6,000 tires that includes exactly 290 that are defective
a. if 4 tires are randomly selected for installation on a car, what is the probability that they are all good?
b. if 100 tires are randomly selected for shipment to an outlet, what is the probability that they are all good? should this outlet plan to deal with defective tires returned by consumers?
A random sample of size 25 is taken from a normal population having a mean of 80 and a standard deviation of 5. A second random sample of size 36 is taken from a different normal population having a mean of 75 and a standard deviation of 3.
Based on the information in (a), find a one-sided lower 90% confidence limit for m. Also, find a one-sided upper 90% confidence limit for m.
Identify three discrete variables that appear in your current or future career. How do those variables affect your workplace, your product, or your personnel? How would changes in those variables affect these things?
A processor of carrots cuts green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test weight of the boxes, a few were checked.
Given the following raw scores, calculate the following values: Range, Variance and Standard Deviation, show your calculations: Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3
A health care analyst would like to know that if the duration of a given eye surgical procedure has a normal distribution with a mean of 240 minutes and a standard deviation of 40 minutes
A newspaper ad for a manager trainee position contained the statement "Our manager trainees have a first-year earnings average of $20,000 to $24,000." Do you think that the ad is describing a confidence interval? Explain your answer.
Critically discuss understanding the normal distribution and the factors that affect its shape important in solving business and marketing-related questions?
One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.
Here is a two-way table showing enrollment data for full-time undergraduate students in U.S. colleges and universities. The entries are thousands of students:
What is the predictive value of a negative test result? In other words, what is the probability that an individual who returns a negative tests for hypertension is not hypertensive? Please give your answer to 3 decimal places.
Determine the probability that the sample mean is 20 or higher? What is the probability that the sample mean falls within 2 points of the population mean?
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