Question

Weather report shows that out of past 300days , weather forecast were reported wrong 120 times.
a) What is the probability of number of days weather reported correct ?
b) What is the probability of number of days weather reported wrong ?

Please help me.
I have my exam today. ​

Answer 1

Answer:

Total number of days for which weather forecast was recorded = 300

Total number of possible outcomes = 300

Number of days for which forecast was correct = 195

Number of days for which forecast was incorrect = 300−195=105

Hence the number of Number of favourable outcomes for not correct= 105

The probability that on a given day it was not correct =

Total number of possible outcomes

Number of favourable outcomes

=

250

105

=

50

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