Suppose Griffin surveys a random selection of US adults asking. "How many pets are in your household?" Griffin also asks whether any minor children reside in the household. He cross-tabulates the combined responses and constructs a contingency table. Minor children reside? No pet One pet Two or more pets 12 13 5 39 21 13 Yes No What proportion of all households in the survey contain a single pet and do not have any children living in the home? Enter the proportion as a decimal rounded to two places. The proportion of all surveyed homes with a single pet and no children is 0.23106 locorrect The two-way contingency table below shows the results of a hypothetical survey of pet owners by type of pet and gender of the owner. Animal Male Female Total Dog 30 53 83 Cat 35 60 SO 95 Bird 4 16 20 Fish 60 85 145 Total 129 214 343 To access the data, click the link for your preferred software format. CSV Excel (xls) Excel (xlsx) JMP Mac-Text Minitab14-18 Minitab18+ PC-Text R SPSS TI Crunchlt! Determine the proportion, p, of pet fish owners who are female. Give your answer as a decimal precise to two decimal places. The table shows the number of hits and at bats for two baschall players during the first and second halves of the son First half of season Second half of season Player Hits At bats Batting average Player Hits At hats Batting average Bailey 9. 16 55 55 0.291 Bailey 84 264 0.318 Janson 106 360 0.294 Janson 49 142 0.345 If you wish, you can click to download the data in your preferred format. Crunchlt! CSV Excel (xls) Excel (xlsx) JMP Mac Text Minitab14-18 Minitab18+ PC Text R SPSS TI Batting average is determined by dividing the number of hits by the number of at-bats. Use the number of hits and at bats from the preceeding table to determine each player's batting average for the entire season. Give your answers precise to three decimal places. Bailey's batting average: Janson's batting average: hits per time at bat hits per time at bat What kinds of people actually read printed information on the packaging before purchasing a product? As part of a larger study on the influence of product packaging on purchase decisions, a survey of 250 citizens of Sarajevo asked if they observed printed information before purchasing a product (Poturak, 2014). Assume that the sample was a simple random one. The data are displayed in the table showing the age group of the individuals in the survey and their response to whether they observed printed information while purchasing a product. The first number in each cell is the observed count, and the second number is the expected count under the assumption that age group and observing printed information are independent. The total number of responses is 249 because one person chose not to answer. Strongly disagree Disagree Neutral Agree Strongly agree Total 2 5 11 15 18 0-19 51 3.28 6.96 14.34 14.34 12.08 10 14 35 30 20 20-22 109 7:00 14.88 30.64 30.64 25.83 4 15 24 25 21 More than 22 5.72 12.15 25.02 25.02 21.09 68 89 Total 16 34 70 70 59 249 Click to download the data in your preferred format. Crunchlt! CSV Excel JMP Mac Text Minitab14-18 Minitab 18+ PC Text R SPSS TI Calc Calculate the contribution to the chi-square statistic of the number of individuals in the survey aged 20-22 who strongly agreed about whether they observe packing information before purchasing items. Give your answer precise to two decimal places. contribution to chi-square= SOLVE: Calculate the chi-square test statistic, z. Give your answer to three decimal places. Find the degrees of freedom, df. Give your answer as a whole number. df == Find the P-value using technology or Table D. The P-value for the test is 0.001 < P