0.75 Use technology to find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion.

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter4: Writing Linear Equations
Section: Chapter Questions
Problem 14CR
icon
Related questions
Question
Ophthalmology
A study compared mean electroretinogram (ERG) amplitude of patients with different genetic types of
retinitis pigmentosa (RP), a genetic eye disease that often results in blindness. The results shown in the
table were obtained for In(ERG amplitude) among patients 18-29 years of age. (Let population 1 be
patients with dominant RP and population 2 be patients with recessive RP. Use dominant - recessive.
Use α = 0.05.)
Comparison of mean
In(ERG amplitude) by genetic type
among patients with RP
4
Genetic Type Mean ± sd
Dominant
Recessive
X-linked
0.84 ± 0.19
n
63
0.39 ± 0.22 34
-0.1 ± 0.22 29
You can use the Inferential Statistics page and the Distribution Calculators page in SALT to answer parts
of this question.
(a) What is the standard error of In(ERG amplitude) among patients with dominant RP? (Round your
answer to four decimal places.)
0.0239
How does it differ from the standard deviation in the table?
O The standard error reflects the average percentage error for individual patients with dominant
RP while the standard deviation represents the percentage error in the estimate of the mean
In(ERG amplitude) for dominant RP patients.
Deres
O The standard error reflects the percentage error in the estimate of the mean In(ERG amplitude)
for dominant RP patients while the standard deviation represents the average percentage error
for individual patients with dominant RP.
O The standard error represents the between person variation for individual patients with
dominant RP while the standard deviation reflects the error in the estimate of the mean
In(ERG amplitude) for dominant RP patients.
The standard error reflects the error in the estimate of the mean In(ERG amplitude) for
dominant RP patients while the standard deviation represents the between person variation for
individual patients with dominant RP.
Transcribed Image Text:Ophthalmology A study compared mean electroretinogram (ERG) amplitude of patients with different genetic types of retinitis pigmentosa (RP), a genetic eye disease that often results in blindness. The results shown in the table were obtained for In(ERG amplitude) among patients 18-29 years of age. (Let population 1 be patients with dominant RP and population 2 be patients with recessive RP. Use dominant - recessive. Use α = 0.05.) Comparison of mean In(ERG amplitude) by genetic type among patients with RP 4 Genetic Type Mean ± sd Dominant Recessive X-linked 0.84 ± 0.19 n 63 0.39 ± 0.22 34 -0.1 ± 0.22 29 You can use the Inferential Statistics page and the Distribution Calculators page in SALT to answer parts of this question. (a) What is the standard error of In(ERG amplitude) among patients with dominant RP? (Round your answer to four decimal places.) 0.0239 How does it differ from the standard deviation in the table? O The standard error reflects the average percentage error for individual patients with dominant RP while the standard deviation represents the percentage error in the estimate of the mean In(ERG amplitude) for dominant RP patients. Deres O The standard error reflects the percentage error in the estimate of the mean In(ERG amplitude) for dominant RP patients while the standard deviation represents the average percentage error for individual patients with dominant RP. O The standard error represents the between person variation for individual patients with dominant RP while the standard deviation reflects the error in the estimate of the mean In(ERG amplitude) for dominant RP patients. The standard error reflects the error in the estimate of the mean In(ERG amplitude) for dominant RP patients while the standard deviation represents the between person variation for individual patients with dominant RP.
O The standard error and standard deviation are different names for the same quantity and are
actually not different at all.
(b) What test can be used to compare the variance of In(ERG amplitude) between patients with dominant
vs. recessive RP?
We can use a z test for the equality of two variances.
O We can use a x² test for the equality of two variances.
O We can use the extreme studentized deviate test for the equality of two variances.
We can use a t test for the equality of two variances.
We can use an F test for the equality of two variances.
(c) Implement the test in (b), and report a p-value (two-tailed). (Use a = 0.05)
State the null and alternative hypotheses. (Enter != for as needed.)
Hoi
H₁: O
2
0.₁=0₂
822
F= Sd²
MANARAK WADERIA
5d2
What is the test statistic? (Round your answer to two decimal places.)
0.75
0.19²
0122.
= 0.75
li
Use technology to find the p-value. (Round your answer to four decimal places.)
p-value =
= 0,74586
State your conclusion.
O Reject Ho. We can conclude that there is a significant difference in the variance of the
In(ERG amplitude) of the dominant and recessive groups.
Fail to reject Ho. We cannot conclude that there is a significant difference in the variance of the
In(ERG amplitude) of the dominant and recessive groups.
O Fail to reject Ho. We can conclude that there is a significant difference in the variance of the
In(ERG amplitude) of the dominant and recessive groups.
O Reject Ho. We cannot conclude that there is a significant difference in the variance of the
In(ERG amplitude) of the dominant and recessive groups.
(d) What test can be used to compare the mean In(ERG amplitude) between patients with dominant vs.
recessive RP?
We can use a two-sample t for two independent samples with equal variances.
Transcribed Image Text:O The standard error and standard deviation are different names for the same quantity and are actually not different at all. (b) What test can be used to compare the variance of In(ERG amplitude) between patients with dominant vs. recessive RP? We can use a z test for the equality of two variances. O We can use a x² test for the equality of two variances. O We can use the extreme studentized deviate test for the equality of two variances. We can use a t test for the equality of two variances. We can use an F test for the equality of two variances. (c) Implement the test in (b), and report a p-value (two-tailed). (Use a = 0.05) State the null and alternative hypotheses. (Enter != for as needed.) Hoi H₁: O 2 0.₁=0₂ 822 F= Sd² MANARAK WADERIA 5d2 What is the test statistic? (Round your answer to two decimal places.) 0.75 0.19² 0122. = 0.75 li Use technology to find the p-value. (Round your answer to four decimal places.) p-value = = 0,74586 State your conclusion. O Reject Ho. We can conclude that there is a significant difference in the variance of the In(ERG amplitude) of the dominant and recessive groups. Fail to reject Ho. We cannot conclude that there is a significant difference in the variance of the In(ERG amplitude) of the dominant and recessive groups. O Fail to reject Ho. We can conclude that there is a significant difference in the variance of the In(ERG amplitude) of the dominant and recessive groups. O Reject Ho. We cannot conclude that there is a significant difference in the variance of the In(ERG amplitude) of the dominant and recessive groups. (d) What test can be used to compare the mean In(ERG amplitude) between patients with dominant vs. recessive RP? We can use a two-sample t for two independent samples with equal variances.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt