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Range 0–10 11–20 21–30 31–40 41–50

Number of Students 8 12 30 25 15

The table shows the range of scores obtained by 9th grade students on a math test and the number of students in each range. If a student is picked at random, the probability that his or her score is between 21 and 40 is
.

User Brahnp
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2 Answers

6 votes
if you’re looking for the percentage it’s 61%
User Fctorial
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7 votes

Answer:
(11)/(18)

Explanation:

From the given table , the total number 9th grades students gave math test =


8+12+30+25+15=90

The number of 9th grades students got score between 21 and 40 =
30+25=55

Now, If a student is picked at random, the probability that his or her score is between 21 and 40 is is given by :-


(55)/(90)=(11)/(18)

Hence, the probability that his or her score is between 21 and 40 is
(11)/(18)

User Kirill Osenkov
by
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