Question

the percentage of marks obtained by students in a monthly unit test are given below. ​

Answer 1

Answer:

More than 70

Step-by-step explanation:

Because in 5 he got 80 and in 6 he got 72

so,he get more than 70

Answer 2

Answer:

(i) ½

(ii) ⅚

Step-by-step explanation:

(i)

To find the empirical probability, we consider the case of the tests which the student had already taken .

Here,

Number of times the student got more than 70% = 3

Number of times the student took exam = 6.

So,

Probability = ³/6 = ½.

So, there's a half percent chance that the student scores above 70% in the next test also.

(ii)

To find the empirical probability, we consider the case of the tests which the student had already taken .

Here,

Number of times the student got atleast 60% = 5 (that is, except the first test, she/he scored atleast 60% or above it)

Number of times the student took exam = 6

So,

Probability = ⅚

So, there's a ⅚ chance that the student scores atleast 60% in the next test also.