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
Mathematics, 21.06.2019 13:50
Examine the following sets of events. set a: {1, 5, 7, 9, 14} set b: {2, 5, 6, 8, 14, 17} which of the following represents the intersection of set a and set b ? {∅} {5, 14} {1, 2, 5, 6, 7, 8, 9, 14, 17} {1, 2, 6, 7, 8, 9, 17}
Answers: 2
Mathematics, 21.06.2019 19:00
1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?
Answers: 1
Mathematics, 21.06.2019 19:10
Which graph represents the function g(x) = |x + 4| + 2?
Answers: 1
Mathematics, 21.06.2019 20:30
Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)
Answers: 1
4. A factory manufactures treadmills and has a warranty of 5 years on their products. An engineer at...
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