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3 years ago

population mean =72 and standard deviation =10, what is standard error of distribution of sample means for n=4 and n=25

Mathematics

1 answer:

mixer [17]3 years ago

4 0

Answer:

The standard error of distribution for n = 4 is 5 and for n = 25 is 2.

Step-by-step explanation:

1. Let's review the information given to us for solving the question:

Population mean = 72

Standard deviation = 10

Sample₁ = 4

Sample₂ = 25

2. For finding the standard error of the mean, we use the following formula:

Standard error = Standard deviation / √Size of the sample

Standard error for Sample₁ = 10/√4

Standard error for Sample₁ = 10/2 = 5

Now, let's find the standard error for Sample₂

Standard error for Sample₂ = 10/√25

Standard error for Sample₂ = 10/5 = 2

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The variable W represents the number of weeks the office has been on the new recycling plan and the variable P represents the to

chubhunter [2.5K]

Answer:

It will take $\frac{45W}{P}$ weeks to recycle a total of 45 kg of paper

Step-by-step explanation:

W represents the number of weeks the office has been on the new recycling plan

P represents the total kilograms of paper recycled.

It took weeks to recycle P kilograms of paper = W

It took weeks to recycle 1 kilogram of paper = $\frac{W}{P}$

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3 years ago

Find the LCM of 12 and 18

Ipatiy [6.2K]

Answer: 36

Step-by-step explanation: To find the least common multiple or lcm of 12 and 18, begin by listing the first few multiples of each number.

Multiples of 12

1 × 12 = 12

2 × 12 = 24

3 × 12 = 36

Notice that we skipped 0 × 12 in our list of multiples. That's because 0 × 6 is 0 and our least common multiple can not be 0.

When listing the multiples of 18, it's a good idea to keep an eye on the list of multiples for 12 so that we will notice when we find a least common multiple.

Multiples of 18

1 × 18 = 18 ← is not multiple of 12

2 × 18 = 36 ← is a multiple of 12

Notice that we can stop here because all other multiples that we find will be greater 36. So the least common multiple of 12 and 18 is 36.

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3 years ago

In triangle ABC, b = 600, ∠B = 11°, and ∠C = 75°. Find a.

vodomira [7]

Answer:

Step-by-step explanation:

We could use the Law of Sines if we only knew what angle A was. It just so happens that by the Triangle Angle-Sum Theorem, angle A is equal to

180 - B - C. Therefore,

angle A = 180 - 11 - 75 so

angle A = 94. And the Law of Sines is

$\frac{sin94}{a}=\frac{sin11}{600}$ and cross multiply to get

600sin94 = asin11 and solve for a:

$a=\frac{600sin94}{sin11}$ gives you that

a = 3136.85

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3 years ago

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tamaranim1 [39]

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<h2>This is certified as the best square of numbers you ever see </h2>

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3 years ago

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vladimir2022 [97]

Answer:

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Step-by-step explanation:

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3 years ago

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