1. A survey of 90 10-year-old girls revealed that 56 of them prefer salty snacks instead of sweet ones. A survey of 75 boys showed that 60 of them prefer the same.At a=0.05, test the claim that the proportion of girls is lower than boys.

Answer Key

3.)H₀:____________H₁:_____________z=______________P-value=______________

Conclusion:________________________________________________________________________________________________________________________________________________________________________________________________________________________________