What should all homes install to minimise the threat of carbon monoxide poison

What percentage of the earth's water is available for use by living things?

Consider a normal distribution of frog weights with u = 500 grams and o = 65 grams. a sample of size 2,000 is drawn from this population. approximately how many of the 2,000 cases would you expect to find between 435 and 565?

If the null hypothesis is false and the researchers do not reject it a type 2 error has been made. true or false