Colormetric method is used to test lake water for nitrates

Assignment Help Basic Statistics

Reference no: EM13639546

Colormetric method is used to test lake water for nitrates. If water specimens contain nitrates, a solution dropped into the water will cause the specimen to turn red 95% of the time. When used on water specimens without nitrates, the solution causes water to turn red 10% of the time. A past lab study indicates that nitrates are contained in 30% of the water specimens that are sent to the lab for testing. If a water specimen is randomly selected and turns red when tested, calculate the probability that it actually contains nitrates. Use a tree diagram.

Reference no: EM13639546

Questions Cloud

If you were to walk briefly in space without a spacesuit : if you were to walk briefly in space without a spacesuit while far from the sun as an astronaut does in the movie 2001a

Sodium hydroxide can be used as a standarized basic : sodium hydroxide can be used as a standarized basic solution. could another base such as potassium hydroxide koh be

How much energy must the water transfer to its surroundings : one way to keep the contents of a garage from becoming too cold on a night when a severe subfreezing temperature is

You have a box with 3 red 4 white and 2 blue balls in it : you have a box with 3 red 4 white and 2 blue balls in it. suppose you take two balls out of a box without replacement

Colormetric method is used to test lake water for nitrates : colormetric method is used to test lake water for nitrates. if water specimens contain nitrates a solution dropped into

A sample space s contains four sample points e1 e2 e3 e4 : a sample space s contains four sample points e1 e2 e3 e4. list all possible events in s including the null

In a sample of discharge of suspended solids from a : in a sample of discharge of suspended solids from a phosphate mine it was noted that the mean daily discharge was 27

If the coach must start a lineup with one center two : a basketball team has three pure centers four pure forwards four pure guards and one swing- man who can play either

Suppose two customers are chosen at random from the list of : the utility company in a large metropolitan area finds that 70 of its customers pay a given monthly bill in full.a.

User Account

All Pages