The state average for the TAKS-math scores was 75 percent passing. A parent in Tyler, TX...

The state average for the TAKS-math scores was 75 percent passing. A parent in Tyler, TX claims that students are doing much worse than the state passing rate. The high-school principal in Tyler, TX, summarized her latest TAKS-math scores from the 11th grade. Out of 120 students, 85 got a passing TAKS-math score. Is there evidence at the 5% level to support the parent’s claim?

What are the null and alternative hypotheses for this test?

a) Ho: p ≥≥ 0.75 Ha: p < 0.75

b) Ho: μμ > 0.75 Ha: μμ < 0.75

c) Ho: p = 0.75 Ha: p ≠ 0.75

d) Ho: p ≥≥ 0.05 Ha: p < 0.05

What is the critical value of the test statistic?

a) -1.645

b) -2.33

c) 1.645

d) -1.28

Solutions

Expert Solution

orchestra answered 1 year ago

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