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As part of an environmental studies class​ project, students measured the circumferences of a random sample...

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Question

Statistics

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.

Answer & Explanation Solved by verified expert
3.6 Ratings (282 Votes)
Solution Given thatPoint estimate sample mean 304Population standard deviation    See Answer
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