According to the U.S. Census Bureau, 11% of children in the United States lived with at least one grandparent in 2009 (USA TODAY, June 30, 2011). Suppose that in a recent sample of 1640 children, 241 were found to be living with at least one grandparent. At a 2% significance level, can you conclude that the proportion of all children in the United States who currently live with at least one grandparent is higher than 11%? Use both the p-value and the critical-value approaches. Round your answers for the observed value of z and the critival value of z to two decimal places, and the p-value to four decimal places. Zobserved i p-value = i Critical value = i We can conclude that the proportion of all children in the U.S. who currently live with at least one grandparent is 11%.

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According to the U.S. Census Bureau, 11% of children in the United States lived with at least one grandparent in 2009 (USA TODAY,
June 30, 2011). Suppose that in a recent sample of 1640 children, 241 were found to be living with at least one grandparent. At a 2%
significance level, can you conclude that the proportion of all children in the United States who currently live with at least one
grandparent is higher than 11%? Use both the p-value and the critical-value approaches.
Round your answers for the observed value of z and the critival value of z to two decimal places, and the p-value to four decimal places.
Zobserved =
i
p-value =
i
Critical value =
We can conclude that the proportion of all children in the U.S. who currently live with at least one grandparent is
11%.
Transcribed Image Text:According to the U.S. Census Bureau, 11% of children in the United States lived with at least one grandparent in 2009 (USA TODAY, June 30, 2011). Suppose that in a recent sample of 1640 children, 241 were found to be living with at least one grandparent. At a 2% significance level, can you conclude that the proportion of all children in the United States who currently live with at least one grandparent is higher than 11%? Use both the p-value and the critical-value approaches. Round your answers for the observed value of z and the critival value of z to two decimal places, and the p-value to four decimal places. Zobserved = i p-value = i Critical value = We can conclude that the proportion of all children in the U.S. who currently live with at least one grandparent is 11%.
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