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worty [1.4K]
3 years ago
13

If you have a population standard deviation of 9 and a sample size of 144, what is your standard error of the mean?

Mathematics
2 answers:
andrezito [222]3 years ago
6 0
So your answer would be 1296
Anettt [7]3 years ago
4 0

Answer: 0.75

Step-by-step explanation:

Standard error is the quotient of the standard deviation and the square root of the sample size. From the question, Standard error= 9/√144= 3/4 or 0.75

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Morgan saw 10 blue, 8 red, and 42 white cars drive by her house in 1 hour. What is the experimental probability that the next ca
inn [45]

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Step-by-step explanation:

Firstly add all the probabilities together

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3 years ago
What is the quotient of 10 and x as an algebraic expression​
spayn [35]

Answer:

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7 0
3 years ago
kendra has $7.10 in nickels and quarters. if she has 143 more quarters than nickels how many of each coin does she have
Norma-Jean [14]

Answer:

Nickel = 12

Quarters = 26

Step-by-step explanation:

Given

<em>Represent Nickel with N and Quarters with Q</em>

Q = 14 + N   --- <em>It's 14 more quarters; not 143</em>

Worth = \$7.10

Required

Determine the quantity of each coin

First, we have to know that:

0.25Q + 0.05N = 7.10 -- (1)  ---- By converting N and Q to dollars;

Q = 14 + N

Substitute 14 + N for Q in (1)

0.25(14 + N) + 0.05N = 7.10

Open Brackets

3.5 + 0.25N + 0.05N = 7.10

Collect Like Terms

0.25N + 0.05N = 7.10 - 3.5

0.3N = 3.6

Divide through by 0.3

N = 3.6/0.3

N = 12

Recall that:

Q = 14 + N

Q = 14 + 12

Q = 26

5 0
4 years ago
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