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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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