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A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information than it was intended to hold. In the past, only 5% of these diskettes have had bad sectors. If the company wishes to set 99.7% control limits based on samples of size 500, what would these limits be?
What percentage of the dealer prices for the Mercedes CLK350 Coupe is more than $43,000 and hence priced out of the BMW 3 Series Coupe 335i market?
Expectation and variance of a random variable and let X be a random variable with the following probability distribution:
Clearly identify the independent and dependent variables you would study. Determine whether an independent-samples or related-samples t test is most appropriate and why. Generate the statistical null and alternative hypotheses.
How do we use a least squares regression line? Please explain in your own words. What is the range for the coefficient of determination? Please explain in your own words.
How large a sample should she take to estimate the percentage with a margin of error of no more than 4%, with 90% confidence?
Identify the variable being measured and describe the sample as it relates to the population.
A survey of 100 clients of pacific gas and electric resulted in the following frequency distribution of monthly charges.
Does this data indicate that the sentiment for increasing the speed limit is different for the two groups of residents? Let p1 refer to the urban population.
In a random sample of 53 concrete specimens, the average porosity (in percent) was 21.6 and the standard deviation was 3.2. a) Find a 90% confidence interval for the mean porosity of specimens of this type of concrete.
The average thickness of books on a library shelf is 8.3 centimeters.the standard deviation is 0.6 centimeter. If 20% of the books are oversied, find the minimum thickness of the oversized books on the library shelf.
Write a one-page report to Ms. Gupta presenting your conclusions regarding the market performance of Brand 1.
What do these results say about testing with group data? Include in your answer the URL of the site where you found the necessary data.
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