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lutik1710 [3]
3 years ago
13

g Recall the example about community college students and gender. Statistics students surveyed 135 students at Tallahassee Commu

nity College. From their data we are 95% confident that between 44.7% and 61.9% of all TCC students are female. The students realize that this interval contains a large margin of error. What can they do to make a narrower interval?
Mathematics
1 answer:
bixtya [17]3 years ago
4 0

Answer:

They can either decrease the confidence level or increase the sample size, that is, survey more students.

Step-by-step explanation:

The width of a confidence interval is given by:

M = z*\frac{\sigma}{\sqrt{n}}

In which z is the critical value correponding to the confidence level(higher confidence level, higher z is), \sigma is the standard deviation of the population and n is the size of the sample.

The students realize that this interval contains a large margin of error. What can they do to make a narrower interval?

Looking at the formula for M, they can either decrease the confidence level or increase the sample size, that is, survey more students.

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Simplify;4t-2k+5k-t?<br> Help
kogti [31]

Step-by-step explanation:

4t-2k+5k-t

=3t -3k

= 3( t-k)

8 0
2 years ago
Read 2 more answers
First twelve numbers<br> Add 15, subtract 10 (first term: 4)
astra-53 [7]

Answer:

1st- 4, 2nd- 9, 3rd- 14, 4th- 19, 5th- 24, 6th- 29, 7th-  34, 8th- 39, 9th- 44, 10th- 49, 11th- 54, 12th-59

Step-by-step explanation:

1st- 4

2nd- 4+15-10= 9

3rd- 9+15-10=14

4th- 14+15-10=19

5th- 19+15-10=24

6th- 24+15-10=29

7th-  29+15-10=34

8th- 34+15-10=39

9th- 39+15-10=44

10th- 44+15-10=49

11th- 49+15-10=54

12th-54+15-10=59

4 0
3 years ago
Suppose that you are asked to find a quadratic regression to model the height of a ball above the ground after it has been throw
Bogdan [553]
The y-intercept would represent the highest point. The graph will show a parabola and this point will only be reached once.

The x-intercept would be the starting point and the ending point. You can find total distance traveled with this.
7 0
3 years ago
A journalist is interested in whether there is a significant difference in the salary offered to electrical engineering and chem
serious [3.7K]

Answer:

the appropriate conclusion is that

<em>The samples provide evidence that there is a statistically significant difference between the starting salary of chemical engineering and electrical engineering graduates at the University of Texas at Austin for 2013-2014.</em>

<em />

Step-by-step explanation:

Since the p-value is small, it indicates statistically significant results. This means that <em>there is a statistically significant difference between the starting salary of chemical engineering and electrical engineering graduates at the University of Texas at Austin for 2013-2014.</em>

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3 years ago
Either Table A or Table B shows a proportional relationship.
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Table B of course they follow by the order instead of table A
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