An operation manager at a pump manufacture wants to test their pump outputs. The design engineer claims they have a mean output of 272 watts with a variance of 144. What is the probability that the mean pump output would be greater than 271.4 watts in a sample of 100 pumps if the claim is true?

5 use absolute value. False because |-3| and |3| are the same because of absolute value 1,407 is written as 1.407 x 10^3 in scientific notation =2.08008-10, 0, |-11 |, 20 ( |-11 | is 11 because of absolute value)2 hour and about 24.5 minutes i thinka= -2 (divide -10 by 5) 49 4096 (divide) A negative number times a positive number equals a negative number. When you multiply a negative number to a positive number, your answer is a negative number. It doesn't matter which order the positive and negative numbers are in that you are multiplying, the answer is always a negative number.  

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