Employees that work at a fish store must measure the level of nitrites in the water each day. Nitrite levels should remain lower than 5 ppm as to not harm the fish. The nitrite level varies according to a distribution that is approximately normal with a mean of 3 ppm.

The probability that the nitrite level is less than 2 ppm is 0.0918. Which of the following is closest to the probability that on a randomly selected day the nitrite level will be at least 5 ppm?

A. 0039

B. 0266

C. 0918

D. 7519

E. 9961

These are subjects that I haven't done in a long time so if you could provide work too, that would be amazing!

Question

Berry

Mathematics

27 September, 05:37

Employees that work at a fish store must measure the level of nitrites in the water each day. Nitrite levels should remain lower than 5 ppm as to not harm the fish. The nitrite level varies according to a distribution that is approximately normal with a mean of 3 ppm.

The probability that the nitrite level is less than 2 ppm is 0.0918. Which of the following is closest to the probability that on a randomly selected day the nitrite level will be at least 5 ppm?

A. 0039

B. 0266

C. 0918

D. 7519

E. 9961

These are subjects that I haven't done in a long time so if you could provide work too, that would be amazing!

+3

Answers (1)

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Maddison Gentry · Answer 1

Answer:.0039

Step-by-step explanation: we must first determine the sd of the distribution. The z score corresponding to a left tail area of. 0918 is z=-1.33. We must solve - 1.33 = (2-3) / sd for the sd, which is. 7519. Then use that to the probability of p (x>5).