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Zarrin [17]
2 years ago
10

You use a line best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data

set is -0.833 . How confident can you be that your predicted value will be reasonably close to the actual value?
Mathematics
1 answer:
Veseljchak [2.6K]2 years ago
6 0

Answer:

You can be reasonably and mostly towards the strong side of that it is close.

The correlation coefficient is a strong negative correlation, meaning it is most likely close.

Step-by-step explanation:

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Firdavs [7]

Answer:

452.16 inches²

Step-by-step explanation:

→ Write circle area formula

π × r²

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3.14 × 12²

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452.16 inches²

6 0
3 years ago
Lucy is using a one-sample t ‑test based on a simple random sample of size n = 22 to test the null hypothesis H 0 : μ = 16.000 c
slega [8]

Answer:

The value of test statistic is 1.338

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 16.000

Sample mean, \bar{x} = 16.218

Sample size, n = 22

Alpha, α = 0.05

Sample standard deviation, s = 0.764

First, we design the null and the alternate hypothesis

H_{0}: \mu = 16.000\text{ cm}\\H_A: \mu < 16.000\text{ cm}

We use one-tailed t test to perform this hypothesis.

Formula:

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

Putting all the values, we have

t_{stat} = \displaystyle\frac{16.218 - 16.000}{\frac{0.764}{\sqrt{22}} } = 1.338

Thus, the value of test statistic is 1.338

4 0
3 years ago
What expression defines Sn?
frutty [35]

Answer:

Sₙ=3(1/2^n)

Step-by-step explanation:

Notice that in the given series that each term is being multiplied by 1/2, which is our common ratio. 3/2 is the first term because 3*1/2=3/2, so the expression that defines Sₙ is Sₙ=3(1/2^n)

3 0
2 years ago
A laundry basket contains 10 socks, of which 2 are red. What is the probability that a randomly selected sock will be red? Write
algol13

Answer:

you get a pair of red socks. There are 10 socks in the drawer, and 2 are red. Therefore the probability that the first one will be red is 2/10 = 1/5.

Step-by-step explanation:

3 0
2 years ago
Michael needs to lease out a Inusic studio to record his new album. The studio charges an intial studio- use fee of $300 plus an
kobusy [5.1K]

Answer:

$300 + $200x

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So to even use the studio you need to pay $300. For every hour you use the studio you have to pay $200 dollars. So the price would end up as $300 + $200x. The variable stands for how many hours Michael uses the studio.

3 0
3 years ago
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