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An elementary teacher wants to know if the school has a higher proportion of lefthanded students than the usual proportion of 0.10. The teacher surveys

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An elementary teacher wants to know if the school has a higher proportion of lefthanded students than the usual proportion of 0.10. The teacher surveys a random sample of 50 students, and nds that 7 are lefthanded. i) What is the sample proportion 13? O 0.14 O 0.10 O 7 2) What is the hypothesized proportion 300? O 0.14 O 0.5 O 0.10 3) What is the sample size n? 050 07 4) What is the test statistic 2? O 0.943 O 0.815

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