Standard Deviation Questions
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Latest Questions
A random sample of 49 shoppers showed that they spend an average of $23.45 per visit at the Saturday
... Mornings Bookstore. The standard deviation of the population is $2.80. Find a point estimate of the population mean. Find the 90% confidence ...
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A batch of 5000 electric lamps has been a mean of 1000 hours and a standard deviation of 75 hours.
Assuming a normal distribution a) how many lamps will fall before 900 hours b) how many lamps will fall between 950 and 1025 c)what is proportional ...
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Construct a 99% confidence interval estimate of the difference μs−μf?
Randomly selected 15 student cars have ages with a mean of 8 years and a standard deviation of 3.4 years, while randomly selected 28 faculty cars ...
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Popular Questions
A batch of 5000 electric lamps has a mean life of 1000 hours and a standard deviation of 75...
... hours. Assume a normal distribution. i) How many lamps will fail before ...
1 answers | | Open
Construct a 99% confidence interval estimate of the difference μs−μf?
Randomly selected 15 student cars have ages with a mean of 8 years and a standard deviation of ...
1 answers | | Open
Hello, I'm really bad in STAT and would really appreciate if someone simplifies the answer for me in
... a few steps? Q#1) suppose that a normal distribution has a ...
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I have a mean of 7.15 after I added up all my numbers and then divided by the amount of numbers. Now
... for standard deviation I subtract each sample from the mean, ...
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Why are they the same?
Compare the formula values to the Descriptive Statistics table values for mean, median, mode, variance, and standard deviation (In my statistics ...
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