Computer company plans to estimate the mean of visitors to its store. From previous study they know that the standard deviation is 84. with confidence level 90 percent and allowable error of 9 The required sample size to estimate the population mean is (answer to three decimal palces)

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A: n = 18 s =140 mu = 550

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Q: The mean weight of 25 women is 135 lbs with a standard deviation of 15 lbs. a. What is the standard…

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Q: An article in a local town newspaper discusses the results of state test scores in their town. The…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 68…

A: According to the given information, we have Mean = 68 Standard deviation = 4

Q: Determine the minimum sample size needed if we want to estimate the mean age of Camden County…

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Q: 2. I want to create a confidence interval for the salaries of statistics teachers in America. I want…

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Q: What sample size is needed to estimate the mean white cell blood count ( in cells per microliter)…

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Q: You measure 32 textbooks weight and find they have a mean weight of 67 ounces. Assume the standard…

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Q: How large a sample should be selected to provide a 95% confidence interval with a margin of error of…

A: The following information has been provided: The confidence level is 95%. The margin of Error is…

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Q: Find a 95% confidence interval for the difference between full attendance students' Exam 5 score and…

A: We have given data,  Less attendance Full attendance 90 96 90 96 60 100 50 99 69   88…

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Q: Home prices in a city have mean = $194,000 and standard deviation = $20,000. For n = 25 randomly…

A: population mean ()=194000standard deviation()=20000sample size(n)=25Mean()=198000

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.