- X Ideal number of children Ideal Number of Children Frequency 0 11 26 523 264 67 6 Print DoneFinal Exam (Chapters 6,7,8, 9, and 14) - Google Chrome X mylab.pearson.com/Student/PlayerTest.aspx?testld=238133346¢erwin=yes RRIIS 215 Winter 20?? ViIchiann Teai 02/16/79 6.27 DM (a) Construct a relative frequency histogram for the ideal number of children. Choose the correct graph below. O A. O B. O c. O D. 0.6- 0.6- 0.6- 0.6 1Y 0.4- 0.4 O 0.2- C 0.2 0.2- 0.2- 0 2 4 6 8 10 0 2 4 6 8 10 0 2 4 6 8 10 0 2 4 6 8 10 Comment on the shape of the distribution. Choose the correct answer below. O A. The distribution is uniform. O B. The distribution is skewed left. O C. The distribution is skewed right. O D. The distribution is symmetric. (b) What is the mode ideal number of children? Select the correct choice and, if necessary, fill in the answer box to complete your answer. O A. The mode ideal number of children is(are) (Use a comma to separate answers as needed.) B. There is no mode (c) Determine the mean number of children. The mean number of children is. Round to two decimal places as needed.) Determine the standard deviation number of children. The standard deviation number of children is (Round to two decimal places as needed.)(d) Explain why a large sample size is needed to perform any inference regarding this population. Choose the correct answer below. O A. The data are clearly skewed to the right. O B. The standard deviation is less than the mode. O C. The data are symmetric. O D. The mean number is greater than the standard deviation. (e) Ten years ago, the ideal number of children was considered to be 2.73. Do the results of this poll indicate that people's beliefs as to the ideal number of children have changed? Use a = 0.05. Determine the null and alternative hypotheses. Ho 2.73 children H1 : 2.73 children Calculate the test statistic, to to =] (Round to two decimal places as needed.) Calculate the P-value. P-value = (Round to three decimal places as needed.) State the conclusion for the test. O A. Reject Ho because the P-value is less than the a = 0.05 level of significance. O B. Reject Ho because the P-value is greater than the a = 0.05 level of significance. O C. Do not reject Ho because the P-value is less than the a = 0.05 level of significance. O D. Do not reject Ho because the P-value is greater than the a = 0.05 level of significance. Do the results of this poll indicate that people's beliefs as to the ideal number of children have changed? There sufficient evidence at the o = 0.05 level of significance to conclude that people's beliefs as to the ideal number of children have changed