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butalik [34]
3 years ago
13

Suppose a 95% confidence interval for μ has been constructed. If it is decided to take a larger sample and to decrease the confi

dence level of the interval, then the resulting interval width would ________. (Assume that the sample statistics gathered would not change very much for the new sample.) A) be larger than the current interval width. B) be narrower than the current interval width. C) be the same as the current interval width.D) be unknown until actual sample sizes and reliability levels were determined.
Mathematics
1 answer:
KonstantinChe [14]3 years ago
6 0

Answer:

B) be narrower than the current interval width

Step-by-step explanation:

Given that a 95% confidence interval for μ has been constructed.

This confidence interval would depend on the margin of error which in turn depends on the standard error and sample size.

Margin of error = Critical value *std dev/ sqrt of sample size n

Hence when sample size increases, n increases so square root of n increases, which in turn decreases the margin of error.

So confidence interval would become narrower.

B) be narrower than the current interval width

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How do u divided 7/11 can u Show the work plz
lys-0071 [83]

Answer: 0.63 repeating

Step-by-step explanation:

Alrighty! So, we're going to be dividing 7/11. First off, we know that 11 cannot go into 7, so we will add a decimal point to the 7. We now have 7.0 (aka 70) divided by 11.Don't forget to add the decimal on top!  How many times does 11 go into seventy? Six times. So, now we put the six on top. Six times 11 equals 66, so now we're doing to subtract 66 from 70. Your answer should be 4. And because we haven't gotten our final answer yet, we will have to add another a 0 to 7.0 (now 7.00) and add the 0 down to 4 aswell (now 40) Now, how many times does 11 goes into 40? 3. So add the 3 on top. 11x3 equals 33, so now we're going to subtract 33 from 40. You should get 7. Like the last time, since we haven't gotten a final answer, we're going to add another 0 to 7.00 (now 7.000) and bring a 0 down. You should now have 70.

Just to help you save some time, if you repeat this process, you will get a repeating decimal ( 0.63636363636363636363636363...) So, your final answer is 0.63 repeating. (Add a line above the 63 to indicate its repeating)

Sorry if this is kinda complicated, I tried my best to explain it!

^_^

<u>*Let me know if you have any questions!</u>

7 0
3 years ago
What is the simplified expression for 3a^2+9ab+5-4a^2-4ab +3?
seraphim [82]

Answer:

-4a^2+4ab+8

Step-by-step explanation:

our expression is

3a^2+9ab+5-4a^2-4ab+3

we are asked to simplify the expression

in order to that we first bring the like terms together

like terms are those having the same variable or same combination of variables with exactly same degrees

Hence it would be like

3a^2-4a^2+9ab-4ab+5+3

now we simplify the like terms

3a^2-4a^2=-4a^2

9ab-4ab=4ab

5+3=8

Hence

3a^2-4a^2+9ab-4ab+5+3=-4a^2+4ab+8

4 0
4 years ago
Read 2 more answers
Graph the system of equations and state the solution 12. y=-x-2<br> y=2x+2
Nina [5.8K]

Answer:(-1.333, -.667)

Step-by-step explanation:

Graph shown below

5 0
4 years ago
Can -4√12 (cube root) be simplified?
Yuki888 [10]
Yes

Square root of 4 times the square root of 3 is the square root of 12
The square root of 4 is a perfect square which is 2
2x4 is 8

The simplified answer is -8x the square root of 3
7 0
4 years ago
Find the median and mean for each data set.
Bas_tet [7]

Answer:

1. med.=6, mean=5.625

Step-by-step explanation:

this is for the first row

8 0
3 years ago
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