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Gwar [14]
3 years ago
15

What are the range and domain?

Mathematics
1 answer:
Goryan [66]3 years ago
7 0

Answer:

domain=0

range=2

Step-by-step explanation:

this might be helpful..

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Provide an appropriate response. A local bank needs information concerning the checking account balances of its customers. A ran
choli [55]

Answer:

[$489.83, $883.67]

Step-by-step explanation:

The 98% confidence interval is given by the interval

\bf  [\bar x-t\frac{s}{\sqrt n}, \bar x+t\frac{s}{\sqrt n}]

where

\bf  \bar x=686.75 is the sample mean  

s = 256.20 is the sample standard deviation  

n = 15 is the sample size

t is the 2% critical value for the Student's t-distribution with 14 degrees of freedom (sample size -1), this is a value such that the area under the Student's t curve outside the interval [-t, t] is 2%=0.02.

We are using the t-distribution for it is the approximation to the Normal distribution for small samples (n<30).

Either by using a table or the computer, we find  

t = 2.9768

In Excel we use the function

<em>TINV(0.01,14) </em>

In OpenOffice Calc

<em>TINV(0.01;14) </em>

and our 98% confidence interval is

\bf  [686.75-2.9768*\frac{256.20}{\sqrt{15}}, 686.75+2.9768*\frac{256.20}{\sqrt{15}}]=\boxed{[\$489.83,\$883.67]}

8 0
3 years ago
you recently purchased an item the cost $84.99 before tax. the tax on the item was $7.22. what was the tax rate?
lapo4ka [179]
Is approximately 8.49 percent
6 0
2 years ago
Pls click on the photo and answer both questions<br> Pls Answer ASAP :-)
Papessa [141]

Answer: Answer to be MAY be 18, I don't know. Just a guess.

Step-by-step explanation

8 0
2 years ago
PLEASE HELP ME!
Westkost [7]

Answer:

75.09%

Step-by-step explanation:

1st week: 1060

2nd week: 950

3rd week: 1090

4th week: 795

Percent decrease from first to fourth week is 75.09%

Hope this helps!

Plz Mark Brainliest!

5 0
3 years ago
Please help me with this
julsineya [31]
X is 19 and y is 84.
3 0
3 years ago
Read 2 more answers
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