D. -4 points BBUnderStat11 7 R. 007 My Notes Ask Your Teac The Wind Mountain arc

Question

D. -4 points BBUnderStat11 7 R. 007 My Notes Ask Your Teac The Wind Mountain archaeological site is located in southwestern New Mexico. Wind Mountain was home to an ancient culture of prehistoric Native Americans called Anasazi. A random sample of excavations at Wind Mountain gave the following depths (in centimeters) from present-day surface grade to the location of significant archacological artifactst 85 45 120 80 75 55 65 60 65 95 90 70 75 65 68 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean x and sample standard devlation s. (Round your answers to one decimal place.) x-742cm crn s=1183 cm (b) Compute a 85% confidence interval for the mean depth at which archaeological artifacts from the wind Mountain excavation site can be found. (Round your answers to one decimal place.) lower limit upper limit lcm enn cm

Explanation / Answer

Standard Deviation of depth = 18.2

(Sample Mean – Z0.075*SD/n, Sample Mean + Z0.075*SD/n)

(74.2-1.43953*18.25298/, 74.2+1.43953*18.25298/)

(67.4, 81.0)

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