Answer to Question #226062 in Statistics and Probability for Carrie

Question

A recent study claims that girls and boys do not perform the same on math tests taken from a

grade 12. Suppose that in a representative sample, 344 of 430 girls and 369 of 450 boys score at

proficient or advanced levels on a standardized math test. The principal wants to examine whether

the proportion of girls who score at proficient or advanced levels differs from the proportion of boys

at 5% level of significance.

Which one of the following statements is incorrect?

1. pO1 D 0:8 and pO2 D 0:82:

2. The standard error for pO1 

Answer 1

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