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damaskus [11]
3 years ago
10

Which expression is equivalent to (5^4)^2 A. 25^8 B. 20^2 C. 5^8 D. 5^6

Mathematics
1 answer:
Yuliya22 [10]3 years ago
6 0

Answer:

C. 5^8

to raise a power to another power, multiply the exponents

then multiply thr numbers

then u get 5^8

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One factor in rating a National Hockey League team is the mean weight of its players. A random sample of players from the Detroi
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Answer:

1) Random: A random sample needs to be obtained in order to apply inference for the mean

2) Normality condition: The sampling distribution of \bar X needs to be approximately normal. If we use a random sample size higher than 30 we can use the Central Limit theorem to verify this condition.

3) Independence: All the individual observations need to be independent. And we need to satisfy that our sample would be lower than 10% of the real population size.

Step-by-step explanation:

For this case we need three conditions:

1) Random: A random sample needs to be obtained in order to apply inference for the mean

2) Normality condition: The sampling distribution of \bar X needs to be approximately normal. If we use a random sample size higher than 30 we can use the Central Limit theorem to verify this condition.

3) Independence: All the individual observations need to be independent. And we need to satisfy that our sample would be lower than 10% of the real population size.

Data given and notation  

\bar X=203 represent the sample mean

s=10.9 represent the sample standard deviation  

n=17 sample size  

\mu_o represent the value that we want to test  

\alpha=0.01 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We can assume the following system of hypothesis.

Null hypothesis:  \mu = \mu_o  

Alternative hypothesis :\mu\neq \mu_o  

The degrees of freedom on this case:

df=n-1=10-1

Compute the test statistic

The statistic for this case is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

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3 years ago
move polygon ABCD to a location of your choice on the coordinate plane and change the orientation of EF. be sure that the preima
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Answer:

Step-by-step explanation:

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3 years ago
Write an inequality to represent: I have at least two brothers.
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X<span>≥2 where x equals your number of brothers</span>
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A number divided by 80 has a quotient of 7 with 4 as a remainder. Find the number.
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Multiply seven and four and see what you get the answer she’ll come up
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3 years ago
Pls help no one will A student worked the problem 35.8 times 9.3. the student answer was 3,329.4 use estimation to check weather
Inga [223]
Well the way that I rounded this was up so I rounded 9.3-10 and 35.8-40 then I took 40*10=400 (mental math (approximation)) and because 400<3,329.4 this answer is highly unreasonable.

Enjoy!=)
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3 years ago
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