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Which of the following is a laboratory procedure that one should follow?

The following data represents the IQ scores of 11 randomly selected Americans. 85   86   92   98   101   101   103   106   107   132   139 (Round to 3 decimal places as needed)   a. Calculate the mean [a] b. Calculate the variance [b] c. Provide the 5-number summary (put your values in order from least to greatest)  [c]   [d]   [e]   [f]   [g] e. Calculate the IQR [h] f. Calculate the lower fence [i] g. Calculate the upper fence [j] h. List any outliers (leave blank if no outliers; if there are multiple, separate them with commas) [k]

Consider the following joint probability mass function of X and Y.                                         Y 70 90                 X 55 0.19 0.48 85 0.22 0.11 h(Y) [a] [b]   a. Fill in the h(Y) (marginal distribution of Y) row above b. Calculate

Let X and Y be independent random variables. If  [a], [b], 

The following data represents the IQ scores of 11 randomly selected Americans. 67   91   98   101   102   104   106   108   111   112   134 (Round to 3 decimal places as needed)   a. Calculate the mean [a] b. Calculate the variance [b] c. Provide the 5-number summary (put your values in order from least to greatest)  [c]   [d]   [e]   [f]   [g] e. Calculate the IQR [h] f. Calculate the lower fence [i] g. Calculate the upper fence [j] h. List any outliers (leave blank if no outliers; if there are multiple, separate them with commas) [k]

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]