Activity 1

A. State a null hypothesis and alternative hypothesis of the following statements. 1. A medical test is conducted to determine whether a new vaccine reduces the complications of dengue fever. H: o H : H 2. We want to test whether the mean height of Grade 8 students is 58 inches. H: o 3. The intelligence quotient of male Grade 11 students is the same as the female students. H0: B. Determine if the given if the given alternative hypothesis is a one- tailed test or a two- tailed test. 1. The standard deviation of their height is not equal to 5inches. 2. Male adolescents have higher intelligence quotient level than the female adolescents. 3. The average number of internet users this year is significantly higher as compared last yeah 4. The enrolment in elementary schools is not the same as the enrolment in the secondary schools. 5. The average grade of Grade 11 students in Statistics is lower than their average grade in Calculus. C. Illustrate the rejection region given the critical value and identify if the t-values lie in the non-rejection region or rejection region 1. critical t-value of -1.671 computed t-value of -2.45 The computed t-value is at the region. critical t-value of 1.725 computed t-value of 2.14 The computed t-value is at the region. critical t-value of +1.311 computed t-value of -1.134 The computed t-value is at the region