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Let X = the number of pets owned by American households.   x 0 1 2 3 P(X = x) 0.16 0.35 [a] 0.08 P(X ≤ x) [e] [f] [g] [h]   a. Fill in P(X = 2) above. b. Fill in P(X ≤ x) (the CDF) above. c. Find the probability that the number of pets owned by American households is less than 2 [c] d. Calculate the expected number of pets owned by American households (aka calculate the mean) [d]

Let X = the number of pets owned by American households.   x 0 1 2 3 P(X = x) [a] 0.43 0.28 0.14 P(X ≤ x) [e] [f] [g] [h]   a. Fill in P(X = 0) above. b. Fill in P(X ≤ x) (the CDF) above. c. Find the probability that the number of pets owned by American households is greater than 1 [c] d. Calculate the expected number of pets owned by American households (aka calculate the mean) [d]

Suppose 18% of university students choose to take only online classes during a given semester. A random sample of 60 students is selected. (Round to 3 decimal places as needed.)   a. Find the probability that exactly 7 of the sampled students take only online classes. [a][a] b. Find the probability that at least 12 of the sampled students take only online classes. [b][b] c. Find the probability that between 10 and 18, inclusive, of the sampled students take only online classes. [c][c] d. Find the expected number of students who take only online classes in the sample. [d][d]

Suppose 38% of customers at a retail store make a purchase during a visit. A random sample of 45 customers entering the store is selected. (Round to 3 decimal places as needed.)   a. Find the probability that exactly 12 of the sampled customers make a purchase. [a][a] b. Find the probability that between 10 and 20, inclusive, of the sampled customers make a purchase. [b] c. Find the probability that at least 15 of the sampled customers make a purchase. [c][b][c] d. Find the expected number of customers who make a purchase in the sample. [d][d]

The following is a probability distribution table for a discrete random variable, X. x P(X = x) 20 [a] 35 0.34 40 0.23 55 0.14 a. Fill in the missing probability in the table, P(X = 20) b. Calculate the probability that X is more than 35. [b]

A coffee shop reports that the average wait time for customers to receive their drinks during morning hours is [a] minutes, with a standard deviation of [b] minutes. A random sample of [c] customers is selected. (Round to 3 decimal places as needed)   Calculate the standard deviation of the sample mean (aka the standard error). 

The following is a probability distribution table for a discrete random variable, X. x P(X = x) 20 [a] 35 0.34 40 0.23 55 0.14 a. Fill in the missing probability in the table, P(X = 20) b. Calculate the probability that X is more than 35. [b]

If X is the number of football games won in a season, then X is a discrete random variable.

Classify the following variable as either qualitative or quantitative. If it is quantitative, also determine if it is discrete or continuous.   Variable: The brand of shoe worn

Classify the following variable as either qualitative or quantitative. If it is quantitative, also determine if it is discrete or continuous.   Variable: The amount of rainfall in a day