A weather station recorded the temperatures of a place over a period of 7 days as follows:
Day
Temperature (in ∘C )
Monday
45
Tuesday
38
Wednesday
40
Thursday
42
Friday
41
Saturday
37
Sunday
36
Find the probability of a day having a temperature of more than 40 ∘ C.
A
27
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B
57
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C
47
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D
37
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Solution
The correct option is D37 Here, the total number of days = 7 Event, E = A day having a temperature of more than 40∘C. It can be seen there are only 3 days where the temperature is more than 40∘C, namely, Monday, Thursday and Friday. Therefore, number of days where event happened = 3 We know, P(E)=Number of trials in which the event happenedTotal number of trials=37