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n200080 [17]
3 years ago
8

Choose the symbol that completes the statement

Mathematics
2 answers:
asambeis [7]3 years ago
4 0
The correct choice is b
BARSIC [14]3 years ago
4 0
The answer would be B
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What's the complete factored form.<br>5b^2(p-7)+7(p-7)​
kap26 [50]

Answer:

The complete factored form in (p-7)(5b^2+7)

Step-by-step explanation:

6 0
3 years ago
Your company manufactures dolls. each doll requires 2 foot of ribbon for bows how many yards of ribbon will you be required to m
AnnyKZ [126]

Answer:

1200 feet of ribbon

Step-by-step explanation:

2 feet per doll

600 dolls

600 dolls x 2 feet per doll

1200 feet of ribbon for 600 dolls

6 0
3 years ago
Read 2 more answers
A counselor at a community college claims that the mean GPA for students who have transferred to State University is more than 3
Lena [83]

Answer:

t=\frac{3.25-3.1}{\frac{0.3}{\sqrt{36}}}=3  

If we compare the p value and the significance level for example \alpha=1-0.99=0.01 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis.

And the best conclusion would be:

a) Yes. The counselor's claim is valid

Because we reject the null hypothesis in favor to the alternative hypothesis.

Step-by-step explanation:

Data given and notation  

\bar X=3.25 represent the sample mean

s=0.3 represent the sample standard deviation

n=36 sample size  

\mu_o =3.1 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.  

We need to conduct a hypothesis in order to check if the mean is more than 3.1, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3.1  

Alternative hypothesis:\mu > 3.1  

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic 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".  

Calculate the statistic  

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

t=\frac{3.25-3.1}{\frac{0.3}{\sqrt{36}}}=3  

P-value  

The first step is calculate the degrees of freedom, on this case:  

df=n-1=36-1=35  

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

p_v =P(t_{(35)}>3)=0.00247  

Conclusion  

If we compare the p value and the significance level for example \alpha=1-0.99=0.01 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis.

And the best conclusion would be:

a) Yes. The counselor's claim is valid

Because we reject the null hypothesis in favor to the alternative hypothesis.

5 0
3 years ago
I need help is it a active scalene triangle yes or no?
mina [271]
No it is not. that is a right scalene triangle. Acute triangle has three angles less than 90.
8 0
3 years ago
MZAOB = 6x- 12°<br> mZBOC = 3x+ 30°<br> Find mZAOB:
Elanso [62]
The answer is 14 hope is right
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3 years ago
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