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Category > Statistics Posted 23 Jun 2017 My Price 3.00

The compressive strength of samples of cement can be modeled by a normal distribution

The compressive strength of samples of cement can be modeled by a normal distribution with a mean of 6000 kilograms per square centimeter and a standard deviation of 100 kilograms per square centimeter. (a) What is the probability that a sample’s strength is less than 6250 kg/cm2?

(b) What is the probability that a sample’s strength is between 5800 and 5900 kg/cm2?

(c) What strength is exceeded by 95% of the samples?

Answers

Alpha Geek
(8)
Status NEW Posted 23 Jun 2017 07:06 AM My Price 3.00

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file 1498204109-2090299_1_636337490911440299_2090299.xlsx preview (2 words )
me-----------ans-----------da)-----------p(x-----------&am-----------p;l-----------t;6-----------250-----------)b)-----------p(5-----------800-----------&am-----------p;l-----------t;x-----------&am-----------p;l-----------t;5-----------900-----------)p(-----------x&a-----------mp;-----------lt;-----------590-----------0)------------p(x-----------&am-----------p;l-----------t;5-----------800-----------)c)-----------P(Z-----------&am-----------p;l-----------t;z-----------) =-----------z=(-----------x-m-----------ean-----------)/s-----------d=x-----------= -----------
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