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dlinn [17]
3 years ago
5

Help please by tomorrow ​

Mathematics
2 answers:
maxonik [38]3 years ago
6 0

Answer:

D

You multiply 4 by 7 then you get 28

slava [35]3 years ago
3 0

Answer:

D

Step-by-step explanation:

You substitute 4 in every space that has an n. 6+4 does not equal 24, so a is out. 5 times 4 is 20, not 54. 12-4=8, not 16. So the last is 7 times 4, which is 28, so this is the correct answer.

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A consumer group wants to know if an automobile insurance company with thousands of customers has an average insurance payout fo
zhenek [66]

Answer:

E. No, it is not appropriate because the distribution of the population is skewed and the sample size is not large enough to satisfy the condition that the sampling distribution of the sample mean be approximately normal.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In this question:

Standard deviation larger than the sample mean means that the distribution is skewed.

By the Central Limit Theorem, when the distribution is skewed, normality is assumed for samples sizes of 30 or higher. In this question, the sample is of 18, which is less than 30, so the hypothesis test is not appropriated, and the correct answer is given by option E.

7 0
2 years ago
HELP PLEASE ITS AN EMERGENCY !
lina2011 [118]

Answer:

Non linear.

Step-by-step explanation:

just ismt

3 0
3 years ago
You are standing 350 feet away from a skyscraper that is 750 feet tall. What is the angel of elevation from you to the top of th
ipn [44]
tan\  \alpha = \frac{350}{750} = \frac{7}{15} \approx0.4667\ \ \ and\ \ \  \alpha

5 0
3 years ago
Help!?!? Find the volume of the composite figure ​
34kurt

Answer:

288

Step-by-step explanation:

answer is in photo above

6 0
3 years ago
FIANCE 50 HELP ASAP
Assoli18 [71]

Calculate the risk measure (beta) compared to the returns of asset and market premium.

1.4 = 4 + 9((rm^-4)

1.4 = 9rm ^-32

33.4 = 9rm

Rm = 3.71

The answer is 3.71

3 0
3 years ago
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