Posted by **Rald** on Friday, June 21, 2013 at 6:03pm.

If a teacher wants to test her belief that more than 5 students in college classes typically receive A as a grade, she'll perform?

a. two tailed testing of a mean

b. two tail testing of a proportion

c. one tail testing of a proportion

d. one tail testing of a mean

I choose b..is this correct???

- statistics -
**Kuai**, Saturday, June 22, 2013 at 2:13am
You are testing one tail.

- statistics -
**Anonymous**, Monday, June 24, 2013 at 12:32pm
The time spent (in days) waiting for a heart transplant in two states for patients with type A+ blood can be approximated by a normal distribution, as shown in the graph to the right. mean of =128 Standard deviation of=23.3

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