A report provided the following information on the sex of smartphone users for representative samples of young people ages 15 to 24 in several different countries.   Percent Female Percent Male United States 57% 43% Spain 41% 59% Italy 37% 63% India 19% 81% (a) Suppose the sample sizes were 1,000 for the United States and for India and 500 for Spain and Italy. Complete the following two-way table by entering the observed counts.   Female Male United States     Spain     Italy     India     (b) Carry out a hypothesis test to determine if there is convincing evidence that the sex proportions are not the same for all four countries. Use a significance level of 0.05. Calculate the test statistic. (Round your answer to two decimal places.) ?2 = Use technology or SALT to calculate the P-value. (Round your answer to four decimal places.) P-value =

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A report provided the following information on the sex of smartphone users for representative samples of young people ages 15 to 24 in several different countries.
  Percent Female Percent Male
United States 57% 43%
Spain 41% 59%
Italy 37% 63%
India 19% 81%
(a)
Suppose the sample sizes were 1,000 for the United States and for India and 500 for Spain and Italy. Complete the following two-way table by entering the observed counts.
  Female Male
United States    
Spain    
Italy    
India    
(b)
Carry out a hypothesis test to determine if there is convincing evidence that the sex proportions are not the same for all four countries. Use a significance level of 0.05.
Calculate the test statistic. (Round your answer to two decimal places.)
?2 =
Use technology or SALT to calculate the P-value. (Round your answer to four decimal places.)
P-value =

 

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