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3 years ago

The domain of f(x) is {-1,0,2}. if f(x)=3x+2, what is the range

1 answer:

Pie3 years ago

8 0

When x = -1, f(x)=3(-1) +2 = -1
when x = 0, f(x)=3(0) +2 = 2
when x = 2, f(x)=3(2) +2 = 8

range: {-1, 2, 8|

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What is the answer for -8n=13

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Anastaziya [24]

Answer: (60.858, 69.142)

Step-by-step explanation:

The formula to find the confidence interval for mean :

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As per given , we have

Confidence level : 95%

n= 62

sample mean : $\overline{x}=65$ hours

Population standard deviation : $\sigma=18$ hours

z-value for 93% confidence interval: $z_c=1.8119$ [using z-value table]

Now, 93% confidence the mean time taken to mail products for all orders received at the office of this company :-

$65\pm (1.8119)\dfrac{18}{\sqrt{62}}\\\\ 65\pm4.142\\\\=(65-4.142,\ 65+4.142)\\\\= (60.858,\ 69.142)$

Thus , 93% confidence the mean time taken to mail products for all orders received at the office of this company : (60.858, 69.142)

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3 years ago

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Elden [556K]

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3 years ago