Home X D21 Module Seven - MAT-240-J5406 x Zy Section 7.1 - MAT 240: Applied St x Zy Section 7.1 - MAT 240: Applied St X V 0 X + - > C A learn.zybooks.com/zybook/MAT-240-J5406-OL-TRAD-UG.22EW5/chapter/7/section/1 ... = zyBooks My library > MAT 240: Applied Statistics home > 7.1: Hypothesis test for a population proportion LE zyBooks catalog Help/FAQ Kristin Segovia Using the ExamScores dataset, a teacher found that 31 of 50 students scored over 80 in Exam1, which is over the expected proportion of 0.5. At the a = 0.01 significance level, does sufficient evidence exist that the proportion of scores over 80 is greater than 0.5? Use the output below. Exam 1 Scored over 80 31 Observations 50 Confidence level 0.99 Critical value 2.33 Test statistic (z) 1.697056 p-value 0.044843 1) What is the null hypothesis Ho? O p = 0.62 Op = 0.5 O p = 0.62 2) What is the alternative hypothesis Ha? O p # 0.5 Op 0.5 3) What is the p-value? 0 Type here to search O 62'F Sunny ~ D ( () 2:37 PM 6/18/2022