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PilotLPTM [1.2K]
3 years ago
15

I need help with my algebra

Mathematics
1 answer:
levacccp [35]3 years ago
5 0
Is there a picture? Or could you put the question up?
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Suppose the population standard deviation is σ = 5 , an SRS of n = 100 is obtained, and the confidence level is chosen to be 98%
beks73 [17]

Answer:

1.165.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.98}{2} = 0.01

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.01 = 0.99, so z = 2.33

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

\sigma = 5, n = 100. So

M = z*\frac{\sigma}{\sqrt{n}}

M = 2.33*\frac{5}{\sqrt{100}} = 1.165

So the correct answer is:

1.165.

6 0
3 years ago
How do you solve this equation? <br> 8 - 3 (2m-5)
attashe74 [19]
8 + -3 * 2m + (-3)(-5) = 8 + -6m + 15 = 8 + -6m + 15 = (-6m) + (8 + 15 ) = -6m + 23


so the answer is  -6m + 23
8 0
3 years ago
The high temperature was 92 degrees. This was 24 degrees higher than the overnight low temperature. Write an equation to determi
Romashka-Z-Leto [24]
L = H - 24
L = low temperature.
H = High Temperature = 92 degrees
L = 92 - 24
L = 68
8 0
3 years ago
Read 2 more answers
PLEASE HELP TIMEDD
loris [4]
Correct answer: A) A = the card is red, B = the card is black

Because mutually exclusive means "cannot occur simultaneously."
The other choices all can occur together.
7 0
3 years ago
A total of $28,000 is invested in two municipal bonds that pay 4.25% and 4.75% simple interest. The investor wants an annual int
Kobotan [32]

Answer:

$16,000 should be invested in the 4.25% bond

Step-by-step explanation:

Attached is the full solution

6 0
3 years ago
Read 2 more answers
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