family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer th efore to sell a house. The wife is concerned and wants to know when it is optimal to put their house on the market. Her realtor frien nforms them that the last 26 houses that sold in their neighborhood took an average time of 218 days to sell. The realtor also tells nem that based on her prior experience, the population standard deviation is 72 days. [You may find it useful to reference the z able] . What assumption regarding the population is necessary for making an Interval estimate for the population mean? O Assume that the population has a normal distribution. O Assume that the central limit theorem applies. b. Construct the 90% confidence interval for the mean sale time for all homes in the neighborhood. (Round intermediate calculations to at least 4 decimal places. Round "z" value to 3 decimal places and final answers to 2 decimal places.) Confidence interval to
family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer th efore to sell a house. The wife is concerned and wants to know when it is optimal to put their house on the market. Her realtor frien nforms them that the last 26 houses that sold in their neighborhood took an average time of 218 days to sell. The realtor also tells nem that based on her prior experience, the population standard deviation is 72 days. [You may find it useful to reference the z able] . What assumption regarding the population is necessary for making an Interval estimate for the population mean? O Assume that the population has a normal distribution. O Assume that the central limit theorem applies. b. Construct the 90% confidence interval for the mean sale time for all homes in the neighborhood. (Round intermediate calculations to at least 4 decimal places. Round "z" value to 3 decimal places and final answers to 2 decimal places.) Confidence interval to
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.4: Applications
Problem 6EQ: Redo Exercise 5, assuming that the house blend contains 300 grams of Colombian beans, 50 grams of...
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![Exercise 8-9 Static
A family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer than
before to sell a house. The wife is concerned and wants to know when it is optimal to put their house on the market. Her realtor friend
informs them that the last 26 houses that sold in their neighborhood took an average time of 218 days to sell. The realtor also tells
them that based on her prior experience, the population standard deviation is 72 days. (You may find it useful to reference the z
table.]
a. What assumption regarding the population is necessary for making an interval estimate for the population mean?
O Assume that the population has a normal distribution.
O Assume that the central limit theorem applies.
b. Construct the 90% confidence interval for the mean sale time for all homes in the neighborhood. (Round intermediate calculations
to at least 4 decimal places. Round "z" value to 3 decimal places and final answers to 2 decimal places.)
to
Confidence interval
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Transcribed Image Text:Exercise 8-9 Static
A family is relocating from St. Louis, Missouri, to California. Due to an increasing inventory of houses in St. Louis, it is taking longer than
before to sell a house. The wife is concerned and wants to know when it is optimal to put their house on the market. Her realtor friend
informs them that the last 26 houses that sold in their neighborhood took an average time of 218 days to sell. The realtor also tells
them that based on her prior experience, the population standard deviation is 72 days. (You may find it useful to reference the z
table.]
a. What assumption regarding the population is necessary for making an interval estimate for the population mean?
O Assume that the population has a normal distribution.
O Assume that the central limit theorem applies.
b. Construct the 90% confidence interval for the mean sale time for all homes in the neighborhood. (Round intermediate calculations
to at least 4 decimal places. Round "z" value to 3 decimal places and final answers to 2 decimal places.)
to
Confidence interval
< Prev
2 of 8
Next >
-arch
8
立
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