If a box contains 11 hats, out of which 6 are red hats and 5 are green hats. If two hats are to be selected at random without replacement, what is the probability that at least one green hat will be selected?
The mean score for a normally distributed math test was 68% and the standard deviation was 8,2%. One student received a Z score of- 0.48. What was the percent score she received for the test?
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