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A bottling company uses a filling machine to fill plastic bottles with water. The bottles are supposed to contain 300 milliliters (ml). In fact, the contents vary according to the normal distribution with N( = 298, ! = 3). What is the probability that an individual bottle contains less than 295ml? Make sure to standardize (z) using the standard deviation for the sampling distribution. Let"s consider the very large database of individual incomes from the Bureau of Labor Statistics as our population. It is strongly right skewed. How large a sample size?
Construct a 99% confidence interval on the population mean height of all 1-year-old pine seedlings. What are the confidence limits? What statement can be made about the population mean height using the confidence interval?
Carry your intermediate computations to at least four decimal places. Round your answer to at least two decimal places.
Based on a simple random sample of one hundred an analyst estimates the average hourly wage earned by workers in a city to be $30 and computes the margin of error to be $5. Can we conclude from this that most workers there earn between $25 and $35..
Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. assume the number of coffee drinks per day follows a normal distribution.
If one of the Titanic passengers is randomly selected, find the probability of getting a woman or someone who didn't survive the sinking.
Estimate the percentage who weigh more than 180 pounds? Assume that we want 96% confidence that the error is no more than 1.5 percentage points.
The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.
A professor in the accounting department of a business school claims that there is much more variability in the final exam scores of students taking the introductory accounting course who are not majoring in accounting than for students taking the..
The Big Triple at the local racetrack consists of picking the correct order of finish of the first three horses in the ninth race. If there are 12 horses entered in today's ninth race, how many Big Triple outcomes are possible?
Her mean waiting time was 7.4 minutes. Assume that the standard deviation has been historically known to be 2.2 minutes. At the .05 significance level, test the claim that the mean waiting time is less than 10 minutes.
Determine if there is a linear correlation between annual income and the amount of insurance? What is the linear regression line for this data?
To demonstrate the process is in control or out of control utilizing p-chart. A company which produces nails has retained you as a consultant.
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