Question

In: Statistics and Probability

On average, do males outperform females in mathematics? To answer this question, a GCU student compared...

  1. On average, do males outperform females in mathematics? To answer this question, a GCU student compared the scores of male and female eighth-grade students who took a basic skill math test. A summary of the test scores is displayed below.                    

Males

Females

Sample Size

1964

1939

Mean

42.9

43.4

Standard Error

11.6

10.5

a.What would be the 95% CI for each of these data sets?   (3 points)

b.  Based on your results what do you conclude about whether or not these two populations are likely to be significantly different?  Explain your reasoning  (2 points)

  1. A distribution has a mean of 30 and a median of 23. Is it this distribution is positively skewed or negatively skewed? Explain your answer briefly.  (2 points)

Solutions

Expert Solution

orchestra answered 2 years ago
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