A biologist takes 300 water samples from a lake. He uses an indicator solution to find that

Question:

A biologist takes 300 water samples from a lake. He uses an indicator solution to find that 225 of the samples are in the pH range between 5.5 and 6.5. The mean pH is calculated to be 6.0. Estimate the standard deviation of the samples. Then sketch a graph of the pH of the lake.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...