The sample is cluster/stratified/sample of convenience/simple random sampleThe sample size is less than/greater than 30The dotplot shoes that it is reasonable to assume that the population is approximately normal/binomial/poissonHence the assumptions are/are not satisfied

SAT scores: The College Board reports that in 2009, the mean score on the math SAT was 582 and the population standard deviation was o= 120. A random sample of 20 students who took the test in 2010 had a mean score of 515. Following is a dotplot of the 20 scores. ... . .. 350 400 450 500 550 600 650 700 19 (a) Are the assumptions for a hypothesis test satisfied? Explain. (b) If appropriate, perform a hypothesis test to investigate whether the mean score in 2010 differs from the mean score in 2009. Assume the population standard deviation is o = 120. What can you conclude? Use the a=0.10 level of significance and the critical value method. olb Part: 0 / 6 Part 1 of 6 (a) Are the assumptions for a hypothesis test satisfied? Explain. The sample is a (Choose one) The sample size is (Choose one) V 30. The dotplot shows that it is reasonable to assume that the population Is (Choose one) Hence the assumptions (Choose one) V satisfied