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arlik [135]
3 years ago
5

Is a list of numbers and each number is called a term of the sequence

Mathematics
1 answer:
NARA [144]3 years ago
6 0

Answer:

Terms are positive or negative single mathematical expressions.

Step-by-step explanation:

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Which of these random samples represents a representative sample of the number of students in a middle school who walk to school
Westkost [7]

Answer:

c

Step-by-step explanation:

150 is a good sample of a middle school and students at lunch is random again because most students eat lunch

4 0
3 years ago
The Information Technology Department at a large university wishes to estimate the proportion of students living in the dormitor
nadya68 [22]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. And the critical value would be given by:

z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.05 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We can use as an estimator for p \hat p =0.5. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

3 0
3 years ago
How would I do this?
Georgia [21]
Work shown above! Answer would be 110 degrees!

3 0
3 years ago
How can you use 4s facts to find 7*8
Luda [366]
 
→4(2)  which can be referred to as 4 + 4 

→14 (4)<span>= 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 </span>  which also equal  to → 4  + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 +4 + 4 +4 +4 + 4 +4 +4 
5 0
3 years ago
What’s the value of x?
GaryK [48]

12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc12ewrgfbrfc

7 0
3 years ago
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