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Question:
The average cost per night of a hotel room in San Francisco is $550 with a standard deviation is $150 based on a sample of 50 hotel room rates.
a) Construct a 99% confidence interval estimate on the mean of all hotel room rates.
b) What is the 90% confidence interval estimate?
c) What is the 95% confidence interval estimate?
Explain how probability is used in that situation. Identify the type of probability your example best fits by explaining whether it is an independent event or dependent upon something else.
suppose you have some data gathered from a repeated experiment. if you want to make inferences about the data collected
Using a significance test, evaluate whether or not there has been a change in the percent of Internet users who download music. Provide all details for the test. (Round your value for z to two decimal places. Round your P-value to four decimal pla..
the u.s. bureau of labor statistics produces consumer price indexes for several different categories. shown here are
Suppose B^0 and B^1(beta hut 0 and beta hut 1) are the least squares estimates of B0 and B1 of the first model. Find the estimates of B0* and B1* in terms of B^0 and B^1.
Calculate a 3-month moving average forecast for months 4 through 9 also Compare the two forecasts by utilizing MAD. Which forecast appears to be more accurate.
it is claimed that in a bushel of peaches less than ten percent are defective. a sample of 400 peaches is examined and
a randomized controlled trial is run to evaluate the effectiveness of a new drug for asthma in children. a total of 250
(a) What is the shape of this sampling distribution? [How do you know?] (b) What is the mean of this sampling distribution? (Give your answer correct to one decimal place.)
What is the probability of not getting any hits in a game and what is the probability of getting three hits in a game
Of all 3 - 5 year old children, 71% are enrolled in school. If a sample of 400 children are randomly selected, what is the probability that at least 300 will be enrolled in school.
The County Executive for Monroe County is concerned about the response time for the three fire companies in the county. Samples of the response times (in minutes) for each company follow. At the 0.05 significance level is there a difference in the me..
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