Use the Binomial Probability table to answer the following question: A pharmaceutical lab states that a drug causes negative side effects in 10% of all patients. To confirm this assertion, another...

Use the
Binomial Probability table
to answer the following question:

A pharmaceutical lab states that a drug causes negative side effects in 10% of all patients. To confirm this assertion, another laboratory chooses 10 people at random who have consumed the drug. What is the probability of the following events?

1. The number of patients experiencing side effects is 4 or less. P(x≤4)


2. What is the mean number of patients that the laboratory should expect to experience side effects if they choose 10 patients at random?


3. Calculate the variance and standard deviation.