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Alik [6]
3 years ago
13

Evaluate the following relation.

Mathematics
1 answer:
hoa [83]3 years ago
3 0

Answer:Guessing it's true. Sorry if this is wrong.

Step-by-step explanation:

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A biking track has a length of 0.8 miles mi. How long is this in feet ft?
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Answer:

4224

Step-by-step explanation:

.8 mile = 4224 feet

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What is 2 3/2 equal to?<br><br> A. 2√8<br> B. 3√8<br> C. 3√16<br> D. 2√16
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2 3/2 is not equal to any of these
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A lathe is set to cut bars of steel into lengths of 6 cm. The lathe is considered to be in perfect adjustment if the average len
Gnom [1K]

Answer:

t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723    

E. -0.723

df=n-1=93-1=92  

p_v =2*P(t_{(92)}  

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

Step-by-step explanation:

Information provided

\bar X=5.97 represent the sample mean for the length

s=0.4 represent the sample standard deviation

n=93 sample size  

\mu_o =6 represent the value that we want to test

\alpha=0.05 represent the significance level

t would represent the statistic  

p_v represent the p value for the test

System of hypothesis

We need to conduct a hypothesis in order to check if the lathe is in perfect adjustment (6cm), then the system of hypothesis would be:  

Null hypothesis:\mu = 6  

Alternative hypothesis:\mu \neq 6  

since we don't know the population deviation the statistic is:

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

Replacing in formula (1) we got:

t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723    

E. -0.723

P value

The degrees of freedom are given by:

df=n-1=93-1=92  

Since is a two tailed test the p value would be:  

p_v =2*P(t_{(92)}  

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

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A sweater for $36 at 7% sale tax
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Sharon spent $3.45 on sunflower seeds the price of sunflower seeds is $0.89 per pound how many pounds of sunflower seeds does Sh
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3.45 Divided by 0.89 = a little more than 3 pounds.
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