Question 259925
State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.

a.	According to fans, the mean score of all NBA games during the last season was less than 100 points per game. Test the claim that the mean score was at least 100 points per game. (2 points)

Answer:   Claim: the mean score was at least 100 points per game.
	      H0 : µ≥100 
	      Ha : µ<100
                     Test : left-tailed test

b.	The IQ of statistics teacher is greater than 130. Test this claim. (2 points) 
Answer:   Claim: The IQ of statistics teacher is greater than 130 
	      H0 : µ=130
	      Ha : µ>130
                Test: Right-tailed test