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natulia [17]
2 years ago
8

A banker wants to estimate the true mean of how much money adults keep in their bank accounts. He wants to be 95% confident that

he is within $100.How many people does he need to sample if the standard deviation is
$252.73?
Mathematics
1 answer:
mr_godi [17]2 years ago
5 0

Answer: Don't know sorry

Step-by-step explanation:

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DESPERATELY NEED HELP
In-s [12.5K]

Remark

You must use the sin law to find this.


\dfrac{Sin(75)}{22} = \dfrac{Sin(x)}{12}

Multiply through by 12

12 * \dfrac{Sin(75)}{22} = \dfrac{Sin(x)}{12} *12


\dfrac{12*sin(75)}{22} = \text{sin(x)}

0.5269 = sin(x)


Now you have to use the inverse of the sine function.

Use your calculator for that

2nd F

sin-1

(0.5269)

= 31.79 degrees. <<<<<< Answer.


There sometimes is a second answer. I don't think there is in this case.


3 0
3 years ago
Division of decimals
Ludmilka [50]

Answer:

At Least 20

85÷3.5

=24.28

So at least 20.

If I'm wrong, I'm sorry.

4 0
3 years ago
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What is the input in a scatter plot
Charra [1.4K]

Answer:

the X variable

Step-by-step explanation:

it's the same as any other function

3 0
2 years ago
Mary open a bank account and deposits $16.00. Every month she deposits $30.00. Which expression shows the amount of money in her
NikAS [45]

Multiply the amount she deposits every month by the number of months (m) and add it to her starting amount:

The equation will look like this:

y  = 30m + 16

4 0
3 years ago
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Dennis is going to use a number line to multiply 6 × 4.
Sergeeva-Olga [200]
B. The answer will always be to the right of 4.
6 x 4 = 24
24 is greater than 4, which means it is to the right of 4. On a number line, numbers increase from left to right.
8 0
3 years ago
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