The probability that a scoool lunch will include peas is 1/2. How many school lunches would you expect to include peas if you had 20 school lunches?
If the probability of a school lunch including peas is 1/2, then we can expect that approximately 1/2 of the lunches will include peas.
Therefore, the expected number of school lunches that will include peas out of 20 lunches is:
(1/2) * 20 = 10 lunches.
So, we would expect approximately 10 school lunches to include peas out of 20 lunches.
To find out how many school lunches you would expect to include peas if the probability is 1/2, you would multiply the probability by the total number of lunches.
Probability of including peas = 1/2
Total number of school lunches = 20
Expected number of school lunches with peas = Probability of including peas * Total number of lunches
= 1/2 * 20
= 10
Therefore, you would expect 10 out of 20 school lunches to include peas.