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Nina [5.8K]
3 years ago
9

Sasha selected a random sample of bivariate data, with a sample size of 30, and calculated a slope of 3.6 for the sample slope o

f a regression model. Sasha constructed a 95 percent confidence interval to estimate the slope. Alex claims he can construct a confidence interval that is narrower by changing the sample size but keeping all other things the same. Which of the following sample sizes will make Alex's claim true?
A. 10
B. 15
C. 20
D. 25
E. 35
Mathematics
2 answers:
Brrunno [24]3 years ago
8 0
D or e is the correct answer
Lostsunrise [7]3 years ago
5 0

Answer: E. 35

Step-by-step explanation: When all other things remain the same, the width of the confidence interval for the slope of a regression model tends to decrease as the sample size increases

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What is the 32nd term of 311, 305, 299
nata0808 [166]

Answer:

503

Step-by-step explanation:

For an arithmetic sequence, the n-th term is found by

a_n = a_1 + (n - 1)d

To find d (the common difference) we can simply subtract one of the terms by the last, for example:

d = 299 - 305 \\d = -6 \\

The common difference must be the same throughout the entire sequence, so we can do it once more just to be sure:

d = 305 - 311\\d = -6

We also have to know that a_1 stands for the first term of the sequence, which in this case is 311.

Now that we know this, let's find the 32nd term

a_{32} = 311 + (32 - 1)-6\\a_{32} = 311 + 192\\a_{32} = 503

Good luck!

4 0
3 years ago
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Simplify 10(N + 3).<br><br> 10N + 30<br> 10N + 13<br> 10N + 3
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10(N + 3)

= 10N + 30

Hence, the answer is A.
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Basile [38]

Answer:

r=9-5+2

r=6

Step-by-step explanation:

this is the correct answer

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3 years ago
Which is the best measure of central tendency for the type of data below–the mean, the median, or the mode? explain?
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What type of data? Usually, mean is the best representative.
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The length of a rectangle is 55 inches more than the width. the perimeter is 4242 inches. find the length and the width of the r
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L + W = 2121
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2W + 55 = 2121

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6 0
3 years ago
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