Mathematics, 30.03.2021 04:10 braxton24
4. A factory manufactures treadmills and has a warranty of 5 years on their products. An engineer at
the factory believes that the treadmills do not last that long and will malfunction in less than 5 years.
He tests a sample of 40 treadmills and find the average time to be 4.8 years with a standard deviation
of 0.50. (5 points)
a. State the null and alternative hypotheses
b. At the 95% confidence level, is there enough evidence to support the engineer's claim?
Answers: 2
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Which value would be a solution for x in the inequality 47-4x< 7
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When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30
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Mathematics, 21.06.2019 22:30
Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.
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4. A factory manufactures treadmills and has a warranty of 5 years on their products. An engineer at...
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