If a student scored 75 points on a test where the mean score was 83.5 and the standard deviation was 6.1. the student's z score
2 answers:
Answer:
The z score is -1.39
Step-by-step explanation:
Taking into account, that the student score is 75 points, the mean score is 83.5 and the standard deviation is 6.1. The z score is calculated as:
Where x is the score that the student gets, m is the mean score and s is the standard deviation, so the z score is:
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Answer:
he have left 4.45 kg
Step-by-step explanation:
The computation of he have left is as follows:
= Total salt purchase - salt used on his sidewalk - sales used on the driveway
= 4.45 kg
Hence, he have left 4.45 kg