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SashulF [63]
3 years ago
7

What would happen to the mean of the sampling distribution of p-hat if the Statistics major predicted the sampling distribution

of p-hat for samples of size 500 instead of size 100?
Mathematics
1 answer:
Flura [38]3 years ago
8 0

Answer:

Step-by-step explanation:

If repeated sample sizes of large sizes are taken at random, and proportion P is calculated for samples the sample mean will have a normal distribution irrespective of the original distribution.

In other words, the sample proportion will follow a normal distribution with mean = p-hat and std deviation =\sqrt{\frac{p(1-p)}{n} }

This is a direct corrollary of central limit theorem for sample means.

Hence we have irrespective of sample size, sample proportion will have expected value same as p-hat.

So whether sample size is 500 or 100 the p hat will have the same distribution.

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1 1/4 subtracted from its reciprocal is :<br> A -9/20. B - 1/20. C 1/5. D - 1/5
dalvyx [7]

Answer:

Step-by-step explanation:

first we turn ur mixed number into an improper fraction

1 1/4 = 5/4

the reciprocal of 5/4 can be found by just flipping it....so the reciprocal is gonna be 4/5

so 1 1/4 subtracted from its reciprocal is :

4/5 - 5/4 =

16/20 - 25/20 =

- 9/20 <====

7 0
3 years ago
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How do I figure this one out?
Inessa [10]
9k2-12k+4

(k2-6k)+(-6k+4) factor out the 3k from 9k2 0 6k: 3k(k-2) factor out -2 from -6k +4n: -2 (3k-2) factor out common term (3k-2) = (3k-2 ) (3k-2) that equals (3k-2)2
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3 years ago
Find the margin of error for a 90% confidence interval when the standard deviation is LaTeX: \sigma= 50????=50 and LaTeX: n = 25
Murrr4er [49]

Answer:

The margin of error  for a 90% confidence interval is 16.4

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 25

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Margin of error =

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Putting the values, we get,

1.64\times \dfrac{50}{\sqrt{25}} = 16.4

Thus, the margin of error  for a 90% confidence interval is 16.4

8 0
3 years ago
Y=-3/2x+2 Help please!
skad [1K]
 I believe this is the correct answer Y= 3/2x+2
 Hope this helped you and have a fantastic day!
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3 years ago
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Anika [276]
20%
step by step explanation
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3 years ago
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