Question

A statistics group divides families into two groups, couple families and lone-parent families. Data from a recent census for a region are available below. A surveyor calls 1000 families in the region at random in order to market products of different types to the two types of family. For each of the following questions, either answer the question or state why it is not possible to answer it with the information provided and the sampling distribution. Complete parts through (f) below. EE Click the icon to view the regional data summary. a) What is the expected proportion of lone-parent families in this sample? Select the correct choice below and, if necessary, fill in the answer box to complete your answer. O A. The expected proportion is (Round to four decimal places as needed.) O B. It is not possible to answer because the population proportion cannot be determined. ° C. It is not possible to answer because the Central Limit Theorem does not apply. O D. It is not possible to answer because the population standard deviation cannot be determined. b) What is thepobability that the proportion of lone-parent families in the sample will be greater than 0.19? Select the correct choice below and, if necessary, fill in the answer box to complete your answer. O A. The probability is (Round to four decimal places as needed) O B. It is not possible to answer because the population proportion cannot be determined. O C. It is not possible to answer because the population standard deviation cannot be determined. O D. It is not possible to answer because the Central Limit Theorem does not apply. c) What is the expected average number of people per couple family in the sample? Select the correct choice below and, if necessary, fill in the answer box to complete your answer. ⓔ A. The expected average number is . (Round to three decimal places as needed.) O B. t is not possible to answer because the Central Limit Theorem does not apply O C. It is not possible to answer because the population standard deviation cannot be determined. 0 D. It is not possible to answer because the population mean cannot be determined. d) What is the probability that the average number of people per couple family is less than 2.8? Select the correct choice below and, if necessary, fill in the answer box to complete your answer O A. The probability is(Round to four decimal places as needed) O B. t is not possible to answer because the population mean cannot be determined. O C. It is not possible to answer because the Central Limit Theorem does not apply. ⓔ D. It is not possible to answer because the population standard deviation cannot be determined. e) What is the expected median total income of couple families in the sample? Select the correct choice below and, if necessary, fill in the answer box to complete your answer. O A. The expected median total income is sRound to the nearest dollar as needed) O B. It is not possible to answer because the population mean cannot be determined. O C. It is not possible to answer because the population standard deviation cannot be determined. D. It is not possible to answer because the Central Limit Theorem does not apply. f What is the probability that the median total income of lone-parent families in the sample is less than $30,000? Select the correct choice below and, if necessary, fill in the answer box to complete your answer. O A. The probability is -Round to four decimal places as needed.) O B. t is not possible to answer because the population standard deviation cannot be determined. OC. It is not possible to answer because the population mean cannot be determined. D. It is not possible to answer because the Central Limit Theorem does not apply Regional Summary Number of families Number of people Median total income Couple Families 218,919 623,189 $73,625 Lone-Parent Families 47,580 116,788 $33,921

Answer 1

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