Answer:
b.
by relation
Forty students took a statistics exam having a maximum of 50 points. The distribution of score is given in the stem-and-leaf plo
1 answer:
Based on the fact that Tess's score was 25 in the statistics exam as shown by the stem-and-leaf plot, her Tess's percentile was 30th.
<h3>What was Tess's percentile?</h3>Tess's percentile depends on the number of people whose scores she is above.
When looking at the stem-and-leaf plot, we see that Tess's score of 25 is the 13th score.
Her percentile is therefore:
= (13 - 1) / 40
= 12 / 40
= 30th percentile
Rest of the question is:
Tess’s score was 25. What was her percentile?
Find out more on percentile scores at brainly.com/question/24245405
#SPJ1
You might be interested in
Using a confidence interval of proportions, it is found that the correct statement is given by:
D a confidence interval for estimating the cricket's true probability of landing on its feet is more narrow after the final 10 jumps than it was before the final 10 jumps.
<h3>What is a confidence interval of proportions?</h3>A confidence interval of proportions is given by:
In which:
is the sample proportion.
- z is the critical value.
- n is the sample size.
The margin of error is given by:
The margin of error is inversely proportional to the square root of the sample size, hence, the higher the sample size, the narrower the interval is, hence option D is correct.
More can be learned about a confidence interval of proportions at brainly.com/question/25890103