Jerry has a bag of counters. Inside his bag are

2 blue
4 green
5 red and
9 yellow counters
Jerry is going to take a counter at random from his bag.
Write the correct colours to complete these sentences.

The probability that it will be is 0.2

36 inches/second = yards/minute how many yards?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?