Answer:
420m
Step-by-step explanation:
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it up
The correct answers: 8 is B and 9 is D
By Using the Empirical formula we found that 95% of goldfish will have lengths between 4. 6 inches and 9. 4 inches.
<h3>What percentage of goldfish will have lengths between 4. 6 inches and 9. 4 inches?</h3>
According to the empirical rule :
(1) 68% of the measures should come within 1 standard deviation of the mean.
(2 95% of the measures should come within 2 standard deviations of the mean.
(3) 99.7% of the measures should come within 3 standard deviations of the mean.
So we can see in this problem
The mean is 7 inches.
The standard deviation is 1.2 inches.
4.6 = 7 - 2(1.2)
9.4 = 7 + 2(1.2)
The measures are within 2 standard deviations of the mean, hence, 95% of goldfish will have lengths between 4. 6 inches and 9. 4 inches.
Thus by using the Empirical Rule we found that 95% of goldfish will have lengths between 4. 6 inches and 9. 4 inches.
To know more about standard deviation follow.
brainly.com/question/475676
If his employee pays 90%, then Ricardo pays 10%
so the plan was 550......Ricardo paid : 0.10(550) = $ 55 per month
now the plan is 700....Ricardo will pay : 0.10(700) = $ 70 per month
so Ricardo will pay : (70 - 55) = $ 15 more per month <===
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