Mathematics, 02.11.2020 07:00, abolton04

A students received a score of 50 on his history test. The test had a mean of 69 and a standard deviation of 10. Find the z score and assess whether his score is considered unusual. -1.90; not unusual
-1.90; unusual
1.90; unusual
1.90; not unusual

Worth 100 points

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A students received a score of 50 on his history test. The test had a mean of 69 and a standard devi...