Dave's Automatic Door installs automatic garage door openers

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Dave's Automatic Door installs automatic garage door openers

Dave's Automatic Door installs automatic garage door openers. Based on a sample, following are the times, in minutes, required to install 10 door openers: 28, 32, 24, 46, 44, 40, 54, 38, 32, and 42.

Click here for the Excel Data File

a. Compute the sample variance. (Round your answer to 3 decimal places.)

Sample variance = _______

b. Determine the sample standard deviation. (Round your answer to 3 decimal places.)

Sample standard deviation = _______

math Statistics-And-Probability

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Answer 1

✔ Recommended Answer

Answer #1

From the given information,

By using calculator,

The required correct answers are,

a. Sample variance= 82.667

b. Sample standard deviation= 9.092

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Answer 2

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Dave's Automatic Door installs automatic garage door openers

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