1) The standard deviation of their height is not equal to 5 inches. a) ONE-TAILED  b) TWO - TAILED  2) The average number of internet users this year is significantly higher as compared last year. a) ONE-TAILED b) TWO - TAILED 3) The average grade of Grade 11 students in Statistics is lower than their average grade in Calculus. a) ONE-TAILED b) TWO-TAILED 4) The enrolment in elementary schools is not the same as the enrolment in the secondary schools. a) ONE-TAILED b) TWO-TAILED 5) Male Grade 7 and Grade 12 students differ in height on average. a) ONE -TAILED b) TWO-TAILED

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