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Lana71 [14]
2 years ago
6

All else being equal, if you cut the sample size in half, how does this affect the margin of error when using the sample to make

a statistical inference about the mean of the normally distributed population from which it was drawn?
Mathematics
2 answers:
NARA [144]2 years ago
6 0
The margin of error is multiplied the square root of 2 (I got it right on my test)
bagirrra123 [75]2 years ago
3 0

Answer:

Step-by-step explanation:

Given that all else being equal, if you cut the sample size in half, whether this affect the margin of error when using the sample to make a statistical inference about the mean of the normally distributed population from which it was drawn

We know that for a sample std error is calculated as

Std dev/\sq rt n

where standard deviation is that of population if given, otherwise that of sample.

Thus when sample size is halved, we have std error as

std dev/sq rt (n/2)

i.e. std error is multiplied by sqrt 2.

This in turn makes margin of error also multiplied by sq rt 2.

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ch4aika [34]
If you know the measurements of 2 sides not the height , you can apply Pythagorean theorem to find the height. Square root of the sum of the squared sides 
7 0
3 years ago
Marsha earn $25 per hour up to 36 hours; after this,she is paid double time. In one particular week she earned $1550.00 .how man
mel-nik [20]

Answer: Marta worked 13 hours overtime.

Step-by-step explanation:

1): You do 25 x 36 to get the amount of money she can make before she starts to make double.

36 x 25 = 900

2): Minus $900 from $1550

$1550 - $900 = $650

3): Divide $650 by $50

$650 / $50 = 13 hours worked overtime

7 0
2 years ago
The number of unread emails in Bryan’s account is 100. This number grows by 15 unread emails a day. The function N(t)=100+15t re
miv72 [106K]

Answer:

205

Step-by-step explanation:

Given

N(t) = 100 + 15t is the equation of the relation.

We're asked to find N(7)

Taking a look at the question again and putting it side by side the equation

N(t)

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We can deduce that t = 7, and as such, solve for it in the equation given

N(7) = 100 + 15(7)

N(7) = 100 + 105

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Therefore, the number of unread mails after 7 days will be 205

8 0
2 years ago
Evaluate the expression. Drag the answer into the box to match the expression. 27⋅((33)−1) 27 3 1 1/9
Annette [7]
The answer is 1.

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I took this test and got this question right.
7 0
3 years ago
Read 2 more answers
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igor_vitrenko [27]

Answer:

Step-by-step explanation:

You answer goes to minus infinity. There is no answer and you are correct.

6 0
2 years ago
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