1) The table below shows the scores of 50 students in a math test. Scores Frequency (f) 0

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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I need the answers to these questions please

Task 3:
1) The table below shows the scores of 50 students in a math test.
Scores
Frequency (f)
0<t< 10
2х
10 <t< 20
17
20 <t < 30
13
30 <t< 40
3x
a) Find the value of x.
b) Calculate an estimate of the mean score.
c) Find the modal class.
d) Ahmad said “The probability of choosing randomly a student with a score more than 30 is 50%".
Is Ahmad correct? Explain your answer.
Transcribed Image Text:Task 3: 1) The table below shows the scores of 50 students in a math test. Scores Frequency (f) 0<t< 10 2х 10 <t< 20 17 20 <t < 30 13 30 <t< 40 3x a) Find the value of x. b) Calculate an estimate of the mean score. c) Find the modal class. d) Ahmad said “The probability of choosing randomly a student with a score more than 30 is 50%". Is Ahmad correct? Explain your answer.
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