Are you smarter than your older brother? In a study of birth order and intelligence, IQ tests were given to 18- and 19-year-old men to estimate the size of the difference, if any, between the mean IQs of firstborn sons and of secondborn sons. The following data for 10 firstborn sons and 10 secondborn sons are consistent with the means and standard deviations reported in the article. It is reasonable to assume that the samples come from populations that are approximately normal. Firstborn 98 93 121 95 92 118 97 89 116 104 Secondborn 96 82 117 102 92 112 102 93 125 99 Send data to Excel Can you conclude that there is a difference in mean IQ between firstborn and secondborn sons? Use the .= 0.01 level. We [(Choose one) V |the null hypothesis. There | (Choose one) V |sufficient evidence at the o= 0.01 level to conclude that there is a difference in mean IQ between firstborn and secondborn sons. Are you smarter than your older brother? In a study of birth order and intelligence, IQ tests were given to 18- and 19-year-old men to estimate the size of the difference, if any, between the mean IQs of firstborn sons and of secondborn sons. The following data for 10 firstborn sons and 10 secondborn sons are consistent with the means and standard deviations reported in the article. It is reasonable to assume that the samples come from populations that are approximately normal. Firstborn 96 85 119 98 90 116 99 83 121 99 Secondborn 101 85 112 108 87 117 106 92 110 100 Send data to Excel Can you conclude that there is a difference in mean IQ between firstborn and secondborn sons? Use the .= 0.01 level. We |(Choose one) V |the null hypothesis. There | (Choose one) V | sufficient evidence at the 0. =0.01 level to conclude that there is a difference in mean IQ between firstborn and secondborn sons