As part of an environmental studies class​ project, studentsmeasured the circumferences of a random sample of 50 blue sprucetrees near Brainard​ Lake, Colorado. The sample mean circumferencewas 30.4 inches. The population standard deviation is known to bearound 7.1 inches. Find a 99% confidence interval for thepopulation mean circumference of all blue spruce trees near thislake.
​A) What type of confidence interval are you to​ find?
A.
​1-Sample Mean Interval using Z
B.
​1-Sample Mean Interval using T
C.
None of the Above
​B) Confidence​ Interval: (
nothing
​,
nothing
​)
​(round each interval limit to two decimal​ places)
​C) Interpret the interval in the SHOW YOUR WORK area.
