jacamron
21.08.2019 •
Mathematics
At camp last summer the ratio of boys to girls was 3: 5 if there was a total of 160 campers how many girls were there
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Ответ:
Ответ:
6.68 %.
Step-by-step explanation:
The standardised z-score = ( 10.95 - 10.5) / 0.3
= 1.5.
Looking up the Normal Distribution tables ( area to the left) 1.5 corresponds to 0.93319 so for a weight above 10.95 the proportion is
1 - 0.93319 = 0.06681
= 6.68%.