Question

4. The following table shows the marks scored by 100 students in a Mathematics test of 80 marks:

Marks 0 - 20 20 - 30 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80

No. of students 7 10 20 20 20 15 8

a) Find the probability that a student obtained:

i. Less than 20 marks.

ii. 60 or more marks.

b) Draw an ogive for the given distribution using a graph sheet. Use the graph to estimate the following:

i. Interquartile range.

ii. If scoring less than 35 marks is considered failed, find the number of students who failed in the Mathematics test.
PLEASE ANSWER FAST

​

Answer 1

Answer:

1)7/100

2)23/100

will be the answer of question