The first thing you need to do is classify all the men into 4 groups which are:
1) 30 and younger with facial hair: 4
2) older than 3 with facial hair: 5
3) 30 and younger with facial hair: 3
4) older than 30 without facial hair: 4
Question (a): Make a two-way table of the data. Of the men surveyed, how many were 30 and younger? How many did not have facial hair.
with facial hair without facial hair total
30 & younger 4 3 7
older than 30 5 3 8
total 9 6 15
From the data you can see that:
7 men were 30 and younger and 6 men did not have facial hair.
Question (b): Create a two-way relative frequency table that displays the relative frequency of the men 30 and younger and of the men older than 30 who had or did not have facial hair. Express your answer as decimals written to three decimal places.
with facial hair without facial hair total
30 and younger 4/15 3/15 = 1/5 7/15
older than 30 5/15 = 1/3 3/15 = 1/5 8/15
total 9/15 = 3/5 6/15 = 2/5 1
Question c: What percent of men older than 30 had facial hair?
The percent is equal to the relative frequency times 100% so in this case it is equal to (1/3) * 100% = 33.33%
Hope this helps!!! :)
You need to explain to us what to do or else nobody will understand what your trying to ask for.
Answer:7/12
Step-by-step explanation:there are 12 coins in total and 7 of them are pennies
There are a total of 32 problems.
Assumed all 32 problems are 3 points questions ⇒ 32 x 3 = 96 points.
The test is worth 111 points, so there is an extra of 111-96 points = 15 points.
The difference in points in the 2 type of questions is 4 - 3 = 1 points.
Number of 4 points questions = 15 ÷ 1 = 15.
Number of 3 points questions = 32 - 15 = 17.
Answer: There are 17 3-points questions and 15 4-points questions.
