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madreJ [45]
3 years ago
15

Does the table represent a proportional relationship? Show your work!

Mathematics
1 answer:
wel3 years ago
4 0
Yes, adding going up one every time, 5,6,7,8
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$3

Step-by-step explanation:

23-17=6

6/2=3

To check:

6+17=23

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Can anyone help me please?
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A private and a public university are located in the same city. For the private university, 1038 alumni were surveyed and 647 sa
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Answer:

The difference in the sample proportions is not statistically significant at 0.05 significance level.

Step-by-step explanation:

Significance level is missing, it is  α=0.05

Let p(public) be the proportion of alumni of the public university who attended at least one class reunion  

p(private) be the proportion of alumni of the private university who attended at least one class reunion  

Hypotheses are:

H_{0}: p(public) = p(private)

H_{a}: p(public) ≠ p(private)

The formula for the test statistic is given as:

z=\frac{p1-p2}{\sqrt{{p*(1-p)*(\frac{1}{n1} +\frac{1}{n2}) }}} where

  • p1 is the sample proportion of  public university students who attended at least one class reunion  (\frac{808}{1311}=0.616)
  • p2 is the sample proportion of private university students who attended at least one class reunion  (\frac{647}{1038}=0.623)
  • p is the pool proportion of p1 and p2 (\frac{808+647}{1311+1038}=0.619)
  • n1 is the sample size of the alumni from public university (1311)
  • n2 is the sample size of the students from private university (1038)

Then z=\frac{0.616-0.623}{\sqrt{{0.619*0.381*(\frac{1}{1311} +\frac{1}{1038}) }}} =-0.207

Since p-value of the test statistic is 0.836>0.05 we fail to reject the null hypothesis.  

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3 years ago
It is estimated that there are approximately 1 × 1014 cells in the human body. Which of the following represents this amount in
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1014 hope thts the awnser it seemed to obvious
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3 years ago
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