Problem #7 MA Homework 20 Cpatients with Chronic x yBoisestate I Student Secure

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Problem #7

MA Homework 20 Cpatients with Chronic x yBoisestate I Student Secure https/www.webassign.net/web/Student/Assignment-Responses submit?dep 15441858 4-2 points MIntrostat8 6.E 502 XP. My Notes Ask Your Teacher You want to rent an unfurnished one-bedroom apartment in Dallas next year. The mean monthly rent for a random sample of 12 apartments advertised in the local newspaper is $980. Assume the monthly rents in Dallas follow a Normal distribution with a standard deviation of $270. Find a 95% confidence interval for the mean monthly rent for unfurnished one-bedroom apartments available for rent in this community. (Round your answers to two decimal places.) eBook -/3 points MIntroSta 6 E 503-XP. My Notes Ask Your Teacher You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a random sample of 13 apartments advertised in the local newspaper is $1700. Assume that the standard deviation is $220. Find a 95% confidence interval for the mean monthly rent for unfurnished one-bedroom apartments available for rent in this community. (Round your answers to two decimal places.) Will the 95% confidence interval include approximately 95% of the rents of all unfurnished one-bedroom apartments in this area? Explain why or why not. It is impossible to know because we would have to find all of the rents for unfumished one-bedroom apartments in this area Yes, this range implies that it will cover 95% of all of the rents in this area No, this confidence interval would include 95% of all individual rents in the area Yes, this is a range where 95% of the means and individual costs will be covered by the interval No, this is a range of values for the mean rent, not for individual rents eBook C-2 points MIntrostate 6 E 508 XP. My Notes Ask Your Teacher The P-value for a two-sided test of the n hypothesis Ho: u 45 is 0.04 ull (a) Does the 95% confidence interval include the value 45? Why? Yes, 45 is in the 95% confidence interval, because P 0.04 means we would not reject Ho at a 0.05. Yes, 45 is in the 95 confidence interval, because P 0.04 means we would reject Ho at a 0.05 No, 45 is not in the 95% confidence interval, because P 0.04 means we would reject Ho at a 0.05 No, 45 is not in the 95% confidence interval, because P 0.04 means we would not reject Ho at a 0.05. Yes, 45 is in the 95% confidence interval, because P 30.04 means we would not reject Ho at a 0.01 9:09 AM Bu 2124/2017

Explanation / Answer

8.

n=12
sample.mean=980
stdev = 270

95% CI is given by:
xbar+/- Z*Sigma/sqrt(n)
=980 +/- 1.96*270/sqrt(12)
=$827.31 to $1132.77

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