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When a pair of dice are thrown, we are customarily interested in the total number of dots T. Calculate:
a. Its mean.
b. Its standard deviation.
Show work.
Whirltag claims that the useful lifetime of its dishwashers is normally distributed with a mean of 3 years and a standard deviation 1 year.
Why do people buy lottery tickets for a grand prize of 20 million dollars when the probability of winning the grand prize is 1 in 175 million?
the diameters of peaches in a certain orchard are normally distributed with a mean of 4.14 inches and a standard
what is the area under the normal curve between z -1.0 and z
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
Ffor ten randomly selected employees of a company is = 117 - 1.02x. Predict the job performance rating for an employee whose attitude rating is 55.
They hope to use a sample size such that, with probability 0.95, the error will not exceed 0.04. What sample size will ensure this, regardless of what sample proportion value occurs when they gather the sample?
website visitors are often loath to disclose personal information when making a purchase on the internet. despite
Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
If 3 different factor levels show a lot of variation between levels this implies:
Suppose you want to sell your house and you have decided to accept the first offer exceeding M dollars, say. Assume that the offers are i.i.d. with common distribution F. Find the expected number of offers received before selling the house.
the two largest cable providers are concast cable connections with 21.5 million subscribers and time warner cable with
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