Find the number of situations where a player rolled a number greater than 4 at least 2 times and divide it by the total number of trials, 50.
27/50
Practice makes perfect
We are asked to find the probability that a player will roll a number greater than 4 two or more times in 5 rolls based on Alberto's experiment. Let's look at the given data.
Number of Rolls Greater Than 4
Frequency
0
8
1
15
2
18
3
9
4
0
5
0
First, let's find the number of situations in which a player rolled a number greater than 4 two or more times. To do that, we can find the numbers of situations where a player rolled a number greater than 4 two, three, four, and five times.
Number of Rolls Greater Than 4
Frequency
0
8
1
15
2
18
3
9
4
0
5
0
If we add the corresponding frequencies of these situations, we will find the number of times a player rolled a number greater than 4 two or more times.
Number of Rolls Greater Than 4
Frequency
0
8
1
15
2 or more times
18+9+0+0=27
To find the experimental probability that a player rolled a number greater than 4 two or more times, we need to divide the frequency of this situation, 27, by the total number of trials, 50.
P(2or more times)=27/50=0.54
The probability is equal to 2750, which can be also written as 0.54.
