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cupoosta [38]
3 years ago
14

Consider a study collecting data from a population with an unknown mean and standard deviation. If the sample mean and sample st

andard deviation are the same, what is the effect of increasing the sample size on the following measures? The measure can increase, decrease, not change, or more information may be needed.
Mathematics
1 answer:
Levart [38]3 years ago
8 0

Answer:

Step-by-step explanation:

Increasing the sample size in a particular study will bring about a decrease in the standard deviations of the means.

A decrease in the sample size for a particular study will bring about an increase in the standard deviations of the means.

Whereas the population mean of the distribution of sample means is the same as the population mean of the distribution being sampled from meaning that the population of the distribution of sample means never changes.

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Select the multiplication equation that could represent the following question: how many 3/8s are in 5/4?
Akimi4 [234]

Answer:

3*8 = 24 and 5*4 = 20.

Step-by-step explanation:

4 0
3 years ago
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What is the formula for a Arithmetic series and how can you use it in a practical situation? Show explanation!
SVETLANKA909090 [29]

A finite geometric series is that where the consecutive terms have a fix ratio.

Call r the ratio, An the nth term and An+1 the next term to n, then:

An+1 / An = r

For example, the geometric series, 1, 3, 9, 27, 81, ..

You can verify that

3 = 1* 3

9 = 3 * 3

27 = 9 * 3

81 = 27 * 3

So, the formula is An+1 = An * r, so if you know the first term you can find any other term.

For example, Find the fifth term of a geometric series where the first term is 5 and the second term is 25.

r = second term / first term = 25 / 5 = 5

=> Fifth term = First term * r * r * r * r = First term * r^4 = 25 * 5^4 = 15,625

From this you can also see this valid formula:

An = A1 * r^ (n-1).

So now you have two equivalent formulas:

An+1 = An * r, which is called recursive formula, and

An = A1 * r ^ (n-1), which is called explicit formula

hope this helps :)

3 0
3 years ago
What is the additive inverse of the complex number 9 â€"" 4i? â€""9 â€"" 4i â€""9 4i 9 â€"" 4i 9 4i.
hram777 [196]

Additive inverse is the number you add to a given number to make the sum zero. The addition of both the number must be zero to make both numbers additive inverse.. The additive inverse of the given complex number is

-9+4i

<h3>Addictive Inverse</h3>

Addictive Inverse-Additive inverse is the number you add to a given number to make the sum zero. The addition of both the number must be zero to make both numbers additive inverse.

Let an example, if we take the number 10 and add -10 to it. Thus -10 is the additive inverse of the number 10.

Here, the given number is a complex number. A complex number is a number of the form a + bi, where a and b are real numbers. The given function is,

9-4i

The additive inverse of the above number is,-9+4i

Add both and check by equating with zero,

9-4i+(-9i+4)=0

9-4i+-9i+4=0

0=0

Hence, the additive inverse of the given complex number is -9+4i.

For more about the additive inverse, follow the link below-brainly.com/question/13715269

5 0
2 years ago
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ANSWER ASAP PLS..........
Korolek [52]

The length of one leg of the right triangle is 5√10

<h3>How to find the leg of a right triangle?</h3>

The leg of a right triangle can be found as follows;

Therefore, using trigonometric ratios,

sin 45 = opposite / hypotenuse

sin 45 = x / 10√5

1 / √2 = x / 10√5

cross multiply

10√5 = x√2

divide both sides by √2

x = 10√5 / √2

x = 10√5 / √2 × √2 / √2

x = 10√10 / 2 = 5√10

learn more on right triangle here: brainly.com/question/3398476

#SPJ1

8 0
2 years ago
What's the difference between titanium and steel
babunello [35]
Titanium is much harder and lasts longer. meaning it takes longer to oxidate 
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3 years ago
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