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frosja888 [35]
3 years ago
7

Which ratio can form a proportion with 4/8

Mathematics
2 answers:
Goshia [24]3 years ago
5 0

Answer:

The Answer is 14/7

Step-by-step explanation:

4 x 14 = 56

7 x 8 = 56

Why?:

Because when doing the two top numbers and bottom numbers are multiplied together you should end up with the SAME answer for both to create a proportion.

photoshop1234 [79]3 years ago
3 0
The answer will be 1/2
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You are given the sample mean and the population standard deviation. Use this information to construct the​ 90% and​ 95% confide
FrozenT [24]

Question:

You are given the sample mean and the population standard deviation. Use this information to construct the​ 90% and​ 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If​ convenient, use technology to construct the confidence intervals. A random sample of 45 home theater systems has a mean price of ​$114.00. Assume the population standard deviation is ​$15.30. Construct a​ 90% confidence interval for the population mean.

Answer:

At the 90% confidence level, confidence interval = 110.2484 < μ < 117.7516

At the 95% confidence level, confidence interval = 109.53 < μ < 118.48

The 95% confidence interval is wider

Step-by-step explanation:

Here, we have

Sample size, n = 45

Sample mean, \bar x = $114.00

Population standard deviation, σ = $15.30

The formula for Confidence Interval, CI is given by the following relation;

CI=\bar{x}\pm z\frac{\sigma}{\sqrt{n}}

Where, z is found for the 90% confidence level as ±1.645

Plugging in the values, we have;

CI=114\pm 1.645 \times \frac{15.3}{\sqrt{45}}

or CI: 110.2484 < μ < 117.7516

At 95% confidence level, we have our z value given as z = ±1.96

From which we have CI=114\pm 1.96 \times \frac{15.3}{\sqrt{45}}

Hence CI: 109.53 < μ < 118.48

To find the wider interval, we subtract their minimum from the maximum as follows;

90% Confidence level: 117.7516 - 110.2484 = 7.5

95% Confidence level: 118.47503 - 109.5297 = 8.94

Therefore, the 95% confidence interval is wider.

8 0
3 years ago
Read 2 more answers
Can someone help me I think I'm doing my math wrong
Julli [10]

Answer:

Ay bruv I need to see the answer choices to help

Step-by-step explanation:

7 0
3 years ago
1-2m-5m=15 multistep homework
Montano1993 [528]

1-2m-5m=15

combine like terms

1 -7m = 15

subtract 1 from each side

1-1-7m = 15-1

simplify

-7m = 14

divide by -7

-7m/-7 = 14/-7

simplify

m = -2


6 0
3 years ago
Question above please help due in a few minutes
nexus9112 [7]

Answer:

Step-by-step explanation:

here x\geq3

the circle is filled so it includes the value

7 0
2 years ago
Jeremy has a deck of cards numbered 1-12. He picks one card and then replaces it. Then he picks another card. What is the probab
LiRa [457]
The answer is 8.3 percent
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3 years ago
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