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2 years ago

The heights of male students are normally distributed with a mean of 160 cm and a standard deviation

Mathematics

2 answers:

vlada-n [284]2 years ago

5 0

Answer:

6mm

Step-by-step explanation:

Comment of the.....

kompoz [17]2 years ago

4 0

Answer:

2.28%

Step-by-step explanation:

As this is normally distributed, we can use z scores to find the percentage.

First, find the z-score for 148.

The z-score that you get is:

(148-160)/2=2

As we see that z=2, we can use a calculator or a z-score chart to find the percentage less than a z score of 2.

I used my chart and found: 2.28%

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2 years ago

30 men repair a road in 56 days by working 6 hours daily. in how many days 45 men will repair same road by working 7 hours daily

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Answer:

Case1:

Men : 30

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Case2:

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Step-by-step explanation:

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3 years ago

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Answer:

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