Herald’s birth month is April. What is the probability that someone will guess his birthday on first try if the date is two even digits?

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how to estimate population parameter?

A population N= 5Â consist of the following values 10, 11, 12, 13, and 14. Find the mean variance and standard deviation using a random variable of size n=2

when two dice are rolled, what is the probability that the two numbers are the same?

A homework consist of 40 independent problems is given. On the average, it takes 5 minutes to solve a problem, with a standard deviation or 2 minutes. Find the probability that the homework will be completed in less than 3 ...

A family has three children. Let X represent the number of boys. Construct a probability distribution

The number of accidents that occur on a long stretch of road follows a Poisson distribution with an average of 2 accidents per month. a.) Find the probability that (i) 4 accidents (ii) at least 1 accident occur on the road ...

A number is selected randomly from the set of integers 1 to 20 inclusive. What is the probability that the number is either a multiple of 3 or a multiple of 5?

A number is selected randomly from the set of integers 1 to 20 inclusive. What is the probability that the number is equal to or greater than 15?

A number is selected randomly from the set of integers 1 to 20 inclusive. What is the probability that the number is a prime number?