As people exited a movie theater, they were informally surveyed about whether they enjoyed the movie or not.

| | Enjoyed | Did Not Enjoy | Total |
|-----------|---------|---------------|-------|
| Males | [tex]$a$[/tex] | 11% | |
| Females | 46% | [tex]$b$[/tex] | |

What are the values of [tex]$a$[/tex] and [tex]$b$[/tex] in the relative frequency table for the survey results? Round answers to the nearest percent.

A. [tex]$a=40 \%, b=4 \%$[/tex]
B. [tex]$a=41 \%, b=3 \%$[/tex]
C. [tex]$a=47 \%, b=3 \%$[/tex]
D. [tex]$a=41 \%, b=19 \%$[/tex]



Answer :

To solve the problem, let's go through the following steps:

1. Calculate Total Numbers:
- Males who enjoyed the movie: 47
- Males who did not enjoy the movie: 13
- Females who enjoyed the movie: 53
- Females who did not enjoy the movie: 3

Total number of males = 47 (enjoyed) + 13 (did not enjoy) = 60

Total number of females = 53 (enjoyed) + 3 (did not enjoy) = 56

Total number of people surveyed = 60 (total males) + 56 (total females) = 116

2. Calculate the Relative Frequency:
- Relative frequency of males who enjoyed the movie [tex]\( a \)[/tex]:
[tex]\[ a = \left( \frac{\text{males who enjoyed}}{\text{total people}} \right) \times 100 = \left( \frac{47}{116} \right) \times 100 \][/tex]
When calculated and rounded to the nearest percent, [tex]\( a \approx 41\% \)[/tex].

- Relative frequency of females who did not enjoy the movie [tex]\( b \)[/tex]:
[tex]\[ b = \left( \frac{\text{females who did not enjoy}}{\text{total people}} \right) \times 100 = \left( \frac{3}{116} \right) \times 100 \][/tex]
When calculated and rounded to the nearest percent, [tex]\( b \approx 3\% \)[/tex].

So, the values in the relative frequency table for [tex]\( a \)[/tex] and [tex]\( b \)[/tex] are:

[tex]\[ a = 41\%, \quad b = 3\% \][/tex]

The correct answer is:
[tex]\[ \boxed{a=41\% , b=3\%} \][/tex]