A group of 30 people gather in a room. What is the probability that at least 2 of these people have the same birthday? The year of birth is not considered; having the same birthday means two peple were born on the same day of the year.
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Solution. We consider one year has 365 days. Then there are 365*365*...*365=365^30 possible cases for these 30 people's birthdays since each of ...
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A group of 30 people gather in a room. What is the probability that at least 2 of these people have the same birthday? The year of birth is not considered; having the same birthday means two peple were born on the same day of the year.
A normal population has an average of 80 and a standard deviation of 14.0.
Calculate the probability of a value between 75.0 and 90.0.
Calculate the probability of a value of 75.0 or less.
Calculate the probability of a value between 55.0 and 70.0.
If the probability that at least one person makes an A on the final exam is 0.15, then the probability no one makes an A is:
A. 0.15
B. 0.65
C. 0.85
D. 0
Jill wants to do her MBA in Statistics at a B.C. university. She applies to two universities that offer post-graduate degrees in Statistics. Assume that the acceptance rate at University A is 25% and at University B is 35%. Further assume that acceptance at the two universities are independant events.
A) What is the probability
Answer the following:
(A) Find the binomial probability P(x = 6), where n = 15 and p = 0.60.
(B) Set up, without solving, the binomial probability P(x is at most 6) using probability notation.
What is the probability that probability that a randomly selected moviegoer attend the romantic comedy? See attached file for full problem description.
