Question

Exclude leap years from the following calculations. ​(a) Compute the probability that a randomly selected person...

Exclude leap years from the following calculations.

​(a) Compute the probability that a randomly selected person does not have a birthday on October 3 is ___?

(b) Compute the probability that a randomly selected person does not have a birthday on the 4th day of a month.

(c) Compute the probability that a randomly selected person does not have a birthday on the 31st day of a month.​

(d) Compute the probability that a randomly selected person was not born in September

​(a) The probability that a randomly selected person does not have a birthday on October 3 is___?(integer or a simplified​ fraction.)

​

(b) The probability that a randomly selected person does not have a birthday on the 4th day of a month is___?( integer or a simplified​ fraction.)

​(c) The probability that a randomly selected person does not have a birthday on the 31st day of a month is___? (integer or a simplified​ fraction.)

​(d) The probability that a randomly selected person was not born in September is___?

​(integer or a simplified​ fraction.)

Math   Statistics-And-Probability   
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Answer #1

a)probability that a randomly selected person does not have a birthday on October 3 =364/365 (since he can have bday on other 364 days)

b)

probability that a randomly selected person does not have a birthday on the 4th day of a month is =1-12/365 =353/365

c)

probability that a randomly selected person does not have a birthday on the 31st day of a month is=1-7/365 =358/365

d)

probability that a randomly selected person was not born in September is

=1-30/365 =335/365 =67/73

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