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Andrew [12]
2 years ago
14

A car is traveling at 25 miles per hour on a residential street. About how many feet does it travel per second?

Mathematics
1 answer:
Oksanka [162]2 years ago
8 0

Answer:

Abt 37

Step-by-step explanation:

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A group of 59 randomly selected students have a mean score of 29.5 with a standard
algol [13]

Answer:

29.5-1.671\frac{5.2}{\sqrt{59}}=28.37    

29.5+1.671\frac{5.2}{\sqrt{59}}=30.63    

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

Step-by-step explanation:

Information given

\bar X = 29.5 represent the sample mean

\mu population mean  

s= 5.2 represent the sample standard deviation

n=59 represent the sample size  

Confidence interval

The confidence interval for the true mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom are given by:

df=n-1=59-1=58

The Confidence interval is 0.90 or 90%, the significance is \alpha=0.1 and \alpha/2 =0.05, and the critical value is t_{\alpha/2}=1.671

Now we have everything in order to replace into formula (1):

29.5-1.671\frac{5.2}{\sqrt{59}}=28.37    

29.5+1.671\frac{5.2}{\sqrt{59}}=30.63    

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

8 0
2 years ago
When are the sum, difference, product and quotient of two monomials also a monomial?
erastova [34]
Sum/Difference of 2 monomials is (in simplest terms) a monomial when the 2 monomials are 'like terms
3 0
2 years ago
Read 2 more answers
(33) Please check my answer in geo thanks<br><br> I am not 100% about this one
Reil [10]
Yes this is using the transitive property
Point A leads to point B, B goes to C, so overall A goes to C. Think of it connecting a chain. 

Nice job on getting the correct answer.
5 0
3 years ago
1.Given the function h(t) = t³ - 2t, find h(-5).​
Svetllana [295]

Answer:

-65

Step-by-step explanation:

h(t) = (-5)^3 -2(-5)

h(t) = -75 +10

h(t) = -65

7 0
1 year ago
30,200 died in car accidents per year. How many deaths per day
swat32
I thnk 83 if the year has 365 days

4 0
3 years ago
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