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Assoli18 [71]
2 years ago
10

Which of the following estimates at a 95% confidence level most likely comes form a small sample?

Mathematics
1 answer:
KonstantinChe [14]2 years ago
6 0

OptionAStep-by-step explanation:95% confidence interval is obtained using the following formulaCOnfidence interval lower bound = mean - critical value * sigma/sq rt nand upper bound = mean + critical value*sigma/sq rt nThus margin of error = critical value*sigma/rt nvaries indirectly as n provided others are remaining the same.Hence lower sample indicates higher margin of errorOut of 4 options given we find that 1 option has maximum margin of error as 21%Hence option. A is most likely coming from a small sample.

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X-4=10;4x+1=57<br>i need to change the first equation into to the second equation.
cestrela7 [59]

Is this what you mean this is what i understood.



X-4=10;4x+1=57


First equation solve for x.

X-4=10

Add 4 both sides

X=10+4


X=14

Second equation substitute your x answer into second equation to make both sides equal.

4x+1=57

4(14)+1=57

56+1=57

57=57

4 0
3 years ago
An IQ test is designed so that the mean is 100 and the standard deviation is 1414 for the population of normal adults. Find the
Amanda [17]

Answer:

37

Step-by-step explanation:

The first thing is to calculate critical z factor

the alpha and the critical z score for a confidence level of 90% is calculated as follows:

two sided alpha = (100% - 90%) / 200 = 0.05

critical z factor for two sided alpha of .05 is calculated as follows:

critical z factor = z factor for (1 - .05) = z factor for (.95) which through the attached graph becomes:

critical z factor = 2.58

Now we have the following formula:

ME = z * (sd / sqrt (N) ^ (1/2))

where ME is the margin of error and is equal to 6, sd is the standard deviation which is 14 and the value of z is 2.58

N the sample size and we want to know it, replacing:

6 = 2.58 * (14 / (N) ^ (1/2))

solving for N we have:

N = (2.58 * 14/6) ^ 2

N = 36.24

Which means that the sample size was 37.

5 0
4 years ago
Which of the following have at least two congruent parallel bases? all that apply. A. Cylinder B. Circle C. Cone D. Cube E. None
Nookie1986 [14]

Answer:

Option A. Cylinder.

Option D. Cube

Step-by-step explanation:

In this question we have to tell that which are the figures have parallel bases.

Cylinder: Cylinder has two parallel congruent circular bases at the top and at the bottom.

Circle : It's a two dimensional structure and doesn't has any top or bottom.

Cone : It has only one circular bottom.

Pyramid : Pyramids have only one base circular or rectangular.

Cube : Cube is a three dimensional figure having minimum two congruent sides parallel to each other.

Therefore Option A. Cylinder  and Option D. Cube are the answers.

7 0
3 years ago
Read 2 more answers
At 11:59 p.m on December 31st the times square ball in new york city was 725 feet above ground one minute later it was 584 feet
Nuetrik [128]

Answer:

it dropped -141 in 60 seconds so 141/60 = 2.35 ft per second

Step-by-step explanation:

6 0
3 years ago
A linear function passes through (-2, 12) and (4,0). What is the slope of the function?
ValentinkaMS [17]

Answer:

-2

Step-by-step explanation:

I actually just did functions in math at the end of last semester I offer you my condolences dude

5 0
3 years ago
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