Seventy percent of married couples paid for their honeymoon…

Seventy percent of married couples paid for their honeymoon themselves. Suppose you randomly select 20 married couples and ask each one if they paid for their honeymoon. Please answer the following questions in the order listed, labeling your answers as A, B, C, and D. Find the probability that the number of couples who said they paid for their honeymoon themselves is exactly one. Use proper notation. Find the probability that the number of couples who said they paid for their honeymoon themselves is more than one. Use proper notation. Find the probability that the number of couples who said they paid for their honeymoon themselves is between 10 and 15 inclusive. Use proper notation. What is the range of usual number of couples who paid for honeymoon themselves?

Let X represent the number of tires with low air pressure on…

Let X represent the number of tires with low air pressure on a randomly chosen car. The probability distribution of X is as follows.  Discrete Probability distribution x p(x) 0 0.1 1 0.3 2 0.3 3 0.2 4 0.1   Use Excel or Formula. Compute the standard deviation. Round your answer to three decimal places. Use proper notation.