15An oil prospecting company has historically struck oil in 0.05 of its test drills.

What is the probability of striking oil in exactly 2 or exactly 3 sites this year if they have 20 test drills this year?

Give the answer to 3 decimal places.

11Select the correct description for each of the following:

Brand of battery chosencontinuous random variable

neither continuous or discrete - this is categorical data

discrete random variable

Life of a light bulbcontinuous random variable

neither continuous or discrete - this is categorical data

discrete random variable

Number of passengers on a planecontinuous random variable

neither continuous or discrete - this is categorical data

discrete random variable

Houses sold in a month by one agentcontinuous random variable

neither continuous or discrete - this is categorical data

discrete random variable

Number of emails arriving in a daycontinuous random variable

neither continuous or discrete - this is categorical data

discrete random variable