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seropon [69]
2 years ago
11

Will someone help me please

Mathematics
1 answer:
AnnZ [28]2 years ago
4 0

Answer: C should be correct!

Hope it helps!

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A survey of 102 high school students on the amount of money they spend on prom yields an average of $893. Assuming the populatio
Mnenie [13.5K]

Answer:

Margin of error =E=[69]

Step-by-step explanation:

Data provided in the question:

\bar{x}=\$\ 893

\sigma=\$\ 450

n=102

At 88 \% confidence level the z is.

\alpha=1-88 \%=1-0.88=0.12

\frac{\alpha}{2}=\frac{0.12}{2}=0.06

z_{\frac \alpha 2}=20.06=1.555

\text { Margin of error }=E=Z_{\frac \alpha 2} \times \frac{\sigma}{\sqrt{n}}

E=1.555 \times \frac{450}{\sqrt{102}}

Margin of error =E=[69]

7 0
3 years ago
If the minimum payment on a credit card is 3% of the balance, write and equation that would find the minimum payment if the bala
Molodets [167]
Minimum payment
= 3% of $1240
= 3/100 x 1340
= $40.20

3 0
3 years ago
Brian invested $3,000 in an account that paid a simple interest rate of 1.7%. When he cashed in the investment, he received $306
lesya692 [45]

Answer:

$165

Step-by-step explanation:

8 0
2 years ago
Find two positive numbers whose product is 36 and whose sum is a minimum.
alukav5142 [94]
Let one of the numbers be x. The other number cab then be represented as 36-x (x+36-x = 36).
The product can then be represented as y = x(36-x) or y=36x-x2

The maximum or minimum is always on the axis of symmetry which has the formula x=-b/2a.
In our case, the axis of symmetry is -36/-2, so x=18.

If one number is 18 and the 2 numbers add to 36, the other number is 18 as well.
So the 2 numbers are 18 and 18 and the maximum product is 324,
8 0
2 years ago
Please I need help. you will get points ​
iragen [17]

Answer:

t(32) = 94

Step-by-step explanation:

a. I think s is the independent variable

b I think t or t(s) is the dependent variable since the total amount of money depends on how many treats are sold.

t(32) = 30 + 2(32)

t(32) = 30 + 64

t(32) = 94

I'm a little unsure on the dependent and independent variable but I know the function is correct.

Hope this helps :)

7 0
3 years ago
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