It’s 50/50 hope this helps
Answer:
7
Step-by-step explanation:
he can iron 7 in 21 minutes
hope this helps
Answer:






Step-by-step explanation:
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
In this problem we have that:

Distribution







Well, the square root of 12 is 3.464101615