(PLEASE ANSWER + BRAINLIEST ANSWER)

Hydrologists collected water samples from a river for several years. They found 62 out of 648 samples exceeded the desired pH levels, with a 2% samples exceeded the desired pH levels, with a 90% confidence level. Which of the following is the most reasonable conclusion?

A. It is likely that the river water exceeds the desired pH level between 8% and 12% of the time studied.

B. It is likely that the river water exceeds the desired pH level between 10% and 12% of the time studied.

C. It is likely that the river water exceeds the desired pH level between 13% and 15% of the time studied.

D. It is likely that the river water exceeds the desired pH level between 11% and 15% of the time studied.

Given that hydrologists collected water samples from a river for several years. They found 62 out of 648 samples exceeded the desired pH levels, with a 2% samples exceeded the desired pH levels, with a 90% confidence level.

Here margin of error = 2%

Proportion sample = 62/648 =9.5

Hence confidence interval = (9.5-2, 9.5+2)

After rounding off this becomes (8,12)

A. It is likely that the river water exceeds the desired pH level between 8% and 12% of the time studied.

is right.