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Viefleur [7K]
3 years ago
10

A statistician constructed the 95 percent confidence interval (2.3, 3.7) to estimate the slope of a regression model for a set o

f bivariate data with 24 data values. If the sample size n changes but all other things remain the same, which of the following claims about the confidence interval is true ?
A: The interval becomes narrower if n = 20.
B: The interval width remains the same if n = 20.
C: The interval becomes wider if n = 28.
D: The interval becomes narrower if n = 28.
E: The interval width remains the same if n = 28.
Mathematics
2 answers:
weqwewe [10]3 years ago
6 0

Answer:

E: The interval width remains the same if n = 28.

IceJOKER [234]3 years ago
4 0

Answer:

D: The interval becomes narrower if n = 28.

Step-by-step explanation:

D: The interval becomes narrower if n = 28.

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miss Akunina [59]

Answer:

Option (2) is correct graph.

Step-by-step explanation:

Given:

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Now, the above function is an exponential function of the form f(x)=ka^x

Where, 'k' and 'a' are constants.

The range of an exponential function is always greater than 0.

The domain is all real numbers.

Now, for graphing it, we need to find some points on it and its end behaviour.

Now, for x = 0, the function value is given as:

f(0)=4(\frac{1}{2})^0=4

So, (0, 4) is a point on the graph.

Now, for x = 1, the function value is given as:

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So, (1, 2) is another point on the graph.

Now, for x = 2, the function value is given as:

f(2)=4(\frac{1}{2})^2=4\times\frac{1}{4}=1

So, (2, 1) is another point on the graph.

Now, as 'x' tends to ∞, the function value tends to:

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