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OlgaM077 [116]
2 years ago
11

What are the prime factors of 625?

Mathematics
2 answers:
NARA [144]2 years ago
5 0

Answer:

the answer would be b 5.5.5.5

Step-by-step explanation:

Lina20 [59]2 years ago
3 0
The answer would be b, 5.5.5.5
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A theory predicts that the mean age of stars within a particular type of star cluster is 3.3 billion years, with a standard devi
Luden [163]

Answer:

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

Step-by-step explanation:

Data given and notation

\bar X=3.4 represent the sample mean  

\sigma=0.4 represent the population deviation for the sample

n=50 sample size  

\mu_o =3.3 represent the value that we want to test  

\alpha 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 to be tested  

We need to conduct a hypothesis in order to determine if the mean is higher than 3.3, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3.3  

Alternative hypothesis:\mu > 3.3  

Compute the test statistic  

We know the population deviation, so for this case is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

z-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".  

We can replace in formula (1) the info given like this:  

z=\frac{3.4-3.3}{\frac{0.4}{\sqrt{50}}}=1.768  

P value

Since is a one right tailed test the p value would be:  

p_v =P(z>1.768)=0.039  

6 0
2 years ago
Use the table below to answer this question:
Tanzania [10]

Answer:

2

Step-by-step explanation:

We can find the average rate of change by using the formula

rate of change = (y2-y1) /(x2-x1)

                         = (5-3)/(1-0)

                         = 2/1

                            =2

8 0
3 years ago
Read 2 more answers
Drag each tile to the correct box. Not all tiles will be used.
givi [52]
Answer:

(20 + 60) + (3 + 7) + (0.4 + 0.3) + (0.05 + 0.01)
6 0
3 years ago
A 16-ounce can of carrots for $1.29 OR a 20-ounce can of carrots for $1.49
schepotkina [342]

Answer: 20 ounce

Step-by-step explanation: 1.29/16=0.080625 1.49/20=0.0745

5 0
2 years ago
Read 2 more answers
I need answers 1-4. i don’t understand how to figure out the answers
klasskru [66]

answersssssssssssssss to ?


8 0
3 years ago
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