Tieedeu mang by 10-ich palnting is lmommally dist nean, Conmdence u. We randomly select 13 such paintings and measure the amount of wire used in each. The sample gave sample mean of x = 12.61 inches and a sample standard deviation s = 0.75 inches. a)What is the critical value for a 95.0% confidence interval for u? b) Create a 95.0% confidence interval for u c) How long (in inches) is the 95.0% confidence interval for u?

MATLAB: An Introduction with Applications
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The length of wire, X, needed to hang a 12-inch by 16-inch painting is normally distributed with unknown mean, µ inches and known standard deviation o = 0.75 inches. We wish to create a confidence interval for
H. We randomly select 13 such paintings and measure the amount of wire used in each. The sample gave a sample mean of x = 12.61 inches and a sample standard deviations = 0.75 inches.
a)What is the critical value for a 95.0% confidence interval for u?
b) Create a 95.0% confidence interval for u
c) How long (in inches) is the 95.0% confidence interval for µ?
Transcribed Image Text:The length of wire, X, needed to hang a 12-inch by 16-inch painting is normally distributed with unknown mean, µ inches and known standard deviation o = 0.75 inches. We wish to create a confidence interval for H. We randomly select 13 such paintings and measure the amount of wire used in each. The sample gave a sample mean of x = 12.61 inches and a sample standard deviations = 0.75 inches. a)What is the critical value for a 95.0% confidence interval for u? b) Create a 95.0% confidence interval for u c) How long (in inches) is the 95.0% confidence interval for µ?
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