The table below shows the time, t minutes, spent by 20 children to complete the highest level in a compute game Time (min) Frequency (f) Ost< 5 5st< 10 10 st< 15 15 st< 20 2x a) Find the value of x and calculate an estimate of the mean time. b) Find the modal class. c) If we choose at random a child, then find the probability that this child spent less than 5 minutes.
The table below shows the time, t minutes, spent by 20 children to complete the highest level in a compute game Time (min) Frequency (f) Ost< 5 5st< 10 10 st< 15 15 st< 20 2x a) Find the value of x and calculate an estimate of the mean time. b) Find the modal class. c) If we choose at random a child, then find the probability that this child spent less than 5 minutes.
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Transcribed Image Text:• Task 5 (P5 & P6):
The table below shows the time, t minutes, spent by 20 children to complete the highest level in a computer
game
Time (min)
Frequency (f)
0st< 5
5st< 10
6
10 st< 15
15 <t< 20
2x
a) Find the value of x and calculate an estimate of the mean time.
b) Find the modal class.
c) If we choose at random a child, then find the probability that this child spent less than 5 minutes.
Expert Solution
Step 1
Given Data:
The total number of students is: 20
| Time | Frequency |
| 0≤t<5 | x |
| 5≤t<10 | 6 |
| 10≤t<15 | 8 |
| 15≤t<20 | 2x |
Step 2
(a)
The sum of frequency is equals to the total number of students.
Thus, the value of 'x' is 2.
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