Take a Test - Daunyelle Robinson - Google Chrome mathxl.com/Student/PlayerTest.aspx?testld=233512585¢erwin=yes 2021 Fall Session A Math 201-10 Daunyelle Robinson & | 10/11/217:23 PM =Quiz: Quiz 4: Chapters 6 and 7 Question 2 This Quiz: 18 pts possible Submit Quiz In the probability distribution to the right, the random variable X represents the number of marriages an individual aged 15 years or older has been involved in. Complete parts (a) through (f) below. P(x) 0.264 0.577 0.122 UAWN - 0.032 0.004 0.001 (a) Verify that this is a discrete probability distribution. This is a discrete probability distribution because between ] and ], inclusive, and the V of the probabilities is]. (Type whole numbers. Use ascending order.) (b) Draw a graph of the probability distribution. Describe the shape of the distribution. Graph the probability distribution. Choose the correct graph below. O A. B. O c. OD. 0.3- Probability Probability Probability 2 0 . 2 0.2- 0. 1- 0.1 0.1- 012345 012345 012345 012345 Number of Marriages Number of Marriages Number of Marriages Number of Marriages Describe the shape of the distribution. The distribution and is (c) Compute and interpret the mean of the random variable X. Hx = |marriages (Type an integer or a decimal. Do not round.) Which of the following interpretations of the mean is correct? O A. If many individuals aged 15 year or older were surveyed, one would expect the mean number of marriages to be the mean of the random variable. O B. If any number of individuals aged 15 year or older were surveyed, one would expect the mean number of marriages to be the mean of the random variable. O C. The observed number of marriages will be equal to the mean number of marriages for most individuals. O D. The observed number of marriages will be less than the mean number of marriages for most individuals (d) Compute the standard deviation of the random variable X. StatCrunch Next Type here to search O 6:23 PM 66.F Mostly cloudy ~ 91 7 1x 3 10/11/2021