# Question: Sometimes events are in the form at least a given

Sometimes events are in the form ‘‘at least’’ a given number. For example, if a coin is tossed five times, an event could be getting at least two heads. What would be the complement of the event of getting at least two heads?

**View Solution:**## Answer to relevant Questions

Use the result from Exercise 1 along with the result P( Alive at age 10) = 0.99123 to compute P Find the probability that a person aged 50 is still alive at age 70. Mean variance and standard deviation: A random variable X has the following probability distributions a. Find the mean of X. b. Find the variance of X. c. Find the standard deviation of X. If a business decision has an expected gain, is it possible to lose money? Explain. Is it normal? Is it reasonable to treat the following sample as though it comes from an approximately normal population? Explain.Post your question