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bezimeni [28]
3 years ago
7

If the diameter of a circle changes from 6 cm to 12 cm, how will the circumference change?

Mathematics
1 answer:
ruslelena [56]3 years ago
6 0

Answer:

Multiplies by 2

Step-by-step explanation:

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A group of 54 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic
aliya0001 [1]

Answer:

P-value =  0.4846

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4.73

Sample mean, \bar{x} = 4.35

Sample size, n = 51

Alpha, α = 0.05

Sample standard deviation, s = 3.88

First, we design the null and the alternate hypothesis

H_{0}: \mu = 4.73\\H_A: \mu \neq 4.73

We use Two-tailed z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{4.35 - 4.73}{\frac{3.88}{\sqrt{51}} } = -0.699

Now, z_{critical} \text{ at 0.05 level of significance } = \pm 1.96

We can calculate the p-value with the help of standard normal table.

P-value =  0.4846

Since the p-value is higher than the significance level, we fail to reject the null hypothesis and accept it.

We conclude that this college has same drinking habit as the college students in general.

7 0
3 years ago
Simplify the ratio: 28:35
Mama L [17]
28:35
Those are divisible by 7 so divide both sides by seven
the answer is 4:5
3 0
3 years ago
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Garth estimated the height of the door ti his classroom in meters. what is a reasonable estimate?
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2 because 3 meters is labor 6 feet and 2 is above 5'9'' so it's kinda understandable
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3 years ago
What is the product of 18 and k
SashulF [63]
18k i believe because it is a varible and a number so when u multiply them u just put them together.... is this multi choice question because to see the answers would help
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Solve. x^2+ 5x-2=0<br> A. <br> B.<br> C.<br> D.
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the answer is........ B

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3 years ago
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