mia recorded the hair colors of the people who have already taken their seats at a seminar. brown 2 black 6…
mia recorded the hair colors of the people who have already taken their seats at a seminar. brown 2 black 6 red 3 gray 1 considering this data, how many of the next 16 people to take their seats should you expect to be black - haired? black - haired people
Answer
Explanation:
Step1: Calculate total number of people already seated
$2 + 6+3 + 1=12$
Step2: Calculate the proportion of black - haired people
The proportion of black - haired people among those already seated is $\frac{6}{12}=\frac{1}{2}$
Step3: Calculate the expected number of black - haired people among the next 16
Multiply the proportion by 16, so $\frac{1}{2}\times16 = 8$
Answer:
8