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### Problem 1 A random sample of 14 three-bedroom/two-bath houses was taken from

ID: 3316921 • Letter: #

Question

### Problem 1 A random sample of 14 three-bedroom/two-bath houses was taken from the Watauga County Multiple Listing Service (MLS) real estate listings (2003), and the results are reported in the table below. Calculate a $95 confidence interval for the average price of a three bedroom/two bath house in this country I Neighborhood P Price I I Valley Crucis 184.9 I I Valley Crucis I 160.0 I I Valley Crucis 1 298.0 I I Blowing Rock 1 269.9 I I Parkway I Blowing Rock 229.9 I I Cove Creek 175.0I I Blowing Rock I 279.5I I Valley Crucis 1 294.9 I I Blowing Rock 1 226.0 I I Valley Crucis 329.9 I I Green Valley 199.9 I I Park Valley 133.9 I | 189.9 I Iry # Insert R code below this line

Explanation / Answer

R-code


> Price=c(184.9,160.0,298.0,269.9,189.9,229.9,175.0,279.5,294.9,226.0,329.9,199.9,133.9)
> Price
[1] 184.9 160.0 298.0 269.9 189.9 229.9 175.0 279.5 294.9 226.0 329.9 199.9
[13] 133.9
> t.test(Price,conf.level=0.95)

One Sample t-test

data: Price
t = 13.526, df = 12, p-value = 1.261e-08
alternative hypothesis: true mean is not equal to 0
95 percent confidence interval:
191.7697 265.4149
sample estimates:
mean of x
228.5923

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