Mathematics, 27.02.2020 05:27 michaelmatonis
22 random samples were selected from a population that has a normal distribution. The sample has a mean of 99 and a standard deviation of 5. Construct a 95% confidence level for the population standard deviation.
A. 4 < σ < 7
B. 2 < σ < 3
C. 76 < σ < 141
D. 1 < σ < 9
Answers: 1
Mathematics, 21.06.2019 16:30
You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:
Answers: 1
Mathematics, 21.06.2019 19:00
The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?
Answers: 1
Mathematics, 21.06.2019 19:40
Which of the binomials below is a factor of this exression? 16x^2+40xy+25y^2 a.4x-5y b. 2x-5y c.4x+5y d.2x+5y
Answers: 2
22 random samples were selected from a population that has a normal distribution. The sample has a m...
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