Suppose a random sample of 230 tractors has a mean weight of 15,000 lbs with a sample standard deviation of 1,100 lbs. Construct a 95% confidence interval for the population mean if the standard deviation of the population is 800 lbs.   a. (14,896.61, 15,103.39)   b. (14,857.84, 15,142.16)   c. (14,813.23, 15,186.77)   d. (14,864.17, 15,135.83)   e. None of these

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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Suppose a random sample of 230 tractors has a mean weight of 15,000 lbs with a sample standard deviation of 1,100 lbs. Construct a 95% confidence interval for the population mean if the standard deviation of the population is 800 lbs.

  a.

(14,896.61, 15,103.39)

  b.

(14,857.84, 15,142.16)

  c.

(14,813.23, 15,186.77)

  d.

(14,864.17, 15,135.83)

  e.

None of these

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