Let X = number of siblings. Use the following table to answer questions 3 and 4: x (p)x 0 2/40 1 5/40 2 0 3 14/40 4 7/40 5 4/40 3. Find the probability that a person has two siblings. a. 8/40 b. 8 c. 2 d. 6/40 4. Find the expected number of siblings a person has. a. 2.78 b. 15 c. 3.13 d. 1.0

Which of the following problems must be determined using a combination? Determine the probability of rolling doubles with a pair of dice. Determine the number of ways a President and Vice-President can be chosen from a class of 20 students. Determine the number of ways Billy and Samantha can be chosen when a group of 5 is selected from a class of 20 students. Determine how many ways 10 people can sit on a bench. acer F11 F12 Break F10 F9 F7 F8 F6 F5 MICT * & 96 8.

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Suppose X∼Bin(20,0.8).X∼Bin(20,0.8). What is the variance of XX?  A. 15 B. 16 C. 5 D. 10 E. 3.2

K 7 The probability that a bachelor's degree recipient in 2014 majored in biology is 20 Set-up an equation to find the odds of the event occurring. P(E) P (E') 20 20 (Type whole numbers.) .. 6 The odds of a bachelor's degree recipient in 2014 majoring in biology occurring are (Type whole numbers.) Find the odds of the event occurring. to

5.1.11 Which of the following numbers could be the probability of an event? 0.36, 1.3, - 0.5, 0, 0.02, 1 The numbers that could be a probability of an event are 0. (Use a comma to separate answers as needed.) Enter your answer in the answer box and then click Check Answer.

The data represent the results for a test for a certain disease. Assume one individual from the group is randomly selected. Find the probability of getting someone who tested positive, given that he or she had the disease. The probability is approximately The individual actually had the disease Yes D No 126 11 Positive Negative (Round to three decimal places as needed.) 34 129

Determine the probability of the following. Write your answer on the space provided. (20 Points) 1. If one card is shown from an ordinary deck of cards, find the probability of getting the following. a. A king or a queen c. A club or a heart or a spade d. An Ace or a diamond b. A king or a queen or a diamond

A spinner with nine equal-sized sections numbered one to nine is spun once. What is the probability that the spinner will land on a number that is not a multiple of three?A. 2/3 B. 1/3 C. 5/9 D. 7/9

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