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kotegsom [21]
3 years ago
15

What is the value of 273 and 280

Mathematics
1 answer:
Romashka [77]3 years ago
5 0
553 because you just add those two numbers together
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A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought i
garri49 [273]

Answer:

The degrees of freedom first given by:  

df=n-1=12-1=11  

Then we can find the critical value taking in count the degrees of freedom and the alternative hypothesis and then we need to find a critical value who accumulates 0.05 of the area in the right tail and we got:

t_{\alpha}= 1.796

And for this case the rejection region would be:

b) Reject H0 if tcalc >1.7960

Step-by-step explanation:

Information given

5, 7, 4, 6, 7, 5, 5, 6, 4, 4, 7, 5.

System of hypothesis

We want to test if the true mean is higher than 5, the system of hypothesis are :  

Null hypothesis:\mu \leq 5  

Alternative hypothesis:\mu > 5  

The statistic is given by:

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

The degrees of freedom first given by:  

df=n-1=12-1=11  

Then we can find the critical value taking in count the degrees of freedom and the alternative hypothesis and then we need to find a critical value who accumulates 0.05 of the area in the right tail and we got:

t_{\alpha}= 1.796

And for this case the rejection region would be:

b) Reject H0 if tcalc >1.7960

6 0
3 years ago
Which is a prime number 14,13,21,33
Cloud [144]
13. Because it can't be divided by a whole number except 1 and itself. 14 can be Divided by 2. 21 and 33 can be divided by 3 making them composite or divisible by more than just 1 and itself :)
6 0
3 years ago
What is the factorization of x^3 + 8?
Genrish500 [490]
X^3 + 8 = 
<span>factorized 
( x + 2 )</span><span>( <span><span>x2− 2x </span>+ 4 </span><span>)
</span></span>
8 0
3 years ago
Daria invested $5,000 in an account that earns 5% interest annually. She will earn $(blank) in interest over nine months.
Murrr4er [49]
5000*.05. The answer is $250.
4 0
2 years ago
What two numbers are missing from this factor tree for the prime factorization of 189?
butalik [34]

189   = 3*63

       = 3 * 7*9

       = 3 *7 * 3*3

8 0
3 years ago
Read 2 more answers
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