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The probability density function of the net weight in pounds of a packaged chemical herbicide is f(x) = 2.0 for 49.75 < x="">< 50.25="">
a) Determine the probability that a package weighs more than 50 pounds.
b) How much chemical is contained in 90% of all packages?
The mean area of several thousand apartments in a new development is advertised to be 1250 sq. ft. An engineer measured a random sample of apartments: 1244 1245 1242 1245 1237 1245 1246 1232
Differentiate between the levels of measurement by providing an example of data which can be transformed from one level of measurement to another and another example of data that cannot be transformed.
Construct the confidence interval to find the estimated margin of error. Then find the sample mean and you are given the sample mean and sample standard deviation. Use this information to construct the 90% and 95% confidence interval for the popula..
During a recent year the average cost of making a movie was $54.8 million. This year, a random sample of 15 recent action movies had an average production cost of $62.3 million with a variance of $ 8 million.
A car manufacturer tests the first 1,000 cars coming off the assembly line to see if their new anti-lock braking system works correctly. Use the typical values for control limits.
A market research company surveyed consumers to determine their ranked preferences of energy drinks among the brands Monster, Red Bull, and Rockstar.
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
At 95% confidence using the p- value approach, test the hypotheses. Let α = 0.1.
How many measurements should be made in order to be 90% certain that the maximum error of estimation will not exceed 2.0 seconds?
The average stock price for companies making up the S&P 500 is $40, and the standard deviation is $10. Assume the stock prices are normally distributed. What is the probability a company will have a stock price less than $33.
Xelia decides to diversify its product portfolio by introducing 4 different versions of its control systems
Probability of passing a student who guesses on every question is less than 0.10. What score should be set as the lowest passing grade if each question is worth one point?
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