questions to In a sim be answered while studying for the final exam. The overall average for the exam was 73.4 but the n 16 students who answered questions had a mean of M 78.3 with a standard deviation of o = 8.4.For this study, did answering questions while studying produce significantly higher exam scores? Use a one- ogy class gave one group of ng tailed test with a = .01. 17. Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test presented scores than students who studied from text on a screen. In a related study, a professor noticed that sev- eral students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was u 81.7 but the n = 9 students who used e-books had a mean of M 77.2 with a standard deviation of s 5.7 a. Is the sample sufficient to conclude that scores for students using e-books were significantly different from scores for the regular class? Use a two-tailed AC g0g test with o = .05. TICONDEROGA h. Construct the 90% confidence interval to estimate the mean exam score if the entire population used dw nobi c. Write a sentence demonstrating how the results from the hypothesis test and the confidence inter- val would appear in a research report. e-books. 18. A random sample of n = 16 scores is obtained from a population with a mean of u = 45. After a treatment Is administered to the individuals in the sample, the sample mean is found to be M = 49.2. nt the camnle standard deviation is d to
questions to In a sim be answered while studying for the final exam. The overall average for the exam was 73.4 but the n 16 students who answered questions had a mean of M 78.3 with a standard deviation of o = 8.4.For this study, did answering questions while studying produce significantly higher exam scores? Use a one- ogy class gave one group of ng tailed test with a = .01. 17. Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better test presented scores than students who studied from text on a screen. In a related study, a professor noticed that sev- eral students in a large class had purchased the e-book version of the course textbook. For the final exam, the overall average for the entire class was u 81.7 but the n = 9 students who used e-books had a mean of M 77.2 with a standard deviation of s 5.7 a. Is the sample sufficient to conclude that scores for students using e-books were significantly different from scores for the regular class? Use a two-tailed AC g0g test with o = .05. TICONDEROGA h. Construct the 90% confidence interval to estimate the mean exam score if the entire population used dw nobi c. Write a sentence demonstrating how the results from the hypothesis test and the confidence inter- val would appear in a research report. e-books. 18. A random sample of n = 16 scores is obtained from a population with a mean of u = 45. After a treatment Is administered to the individuals in the sample, the sample mean is found to be M = 49.2. nt the camnle standard deviation is d to
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Topic Video
Question
Number 17
Transcribed Image Text:questions to
In a sim
be answered while studying for the final exam. The
overall average for the exam was 73.4 but the
n 16 students who answered questions had a mean
of M 78.3 with a standard deviation of o = 8.4.For
this study, did answering questions while studying
produce significantly higher exam scores? Use a one-
ogy class gave one group of
ng
tailed test with a = .01.
17. Ackerman and Goldsmith (2011) found that students
who studied text from printed hardcopy had better test
presented
scores than students who studied from text
on
a screen. In a related study, a professor noticed that sev-
eral students in a large class had purchased the e-book
version of the course textbook. For the final exam, the
overall average for the entire class was u 81.7 but
the n = 9 students who used e-books had a mean of
M 77.2 with a standard deviation of s 5.7
a. Is the sample sufficient to conclude that scores for
students using e-books were significantly different
from scores for the regular class? Use a two-tailed
AC
g0g
test with o = .05.
TICONDEROGA
Transcribed Image Text:h. Construct the 90% confidence interval to estimate
the mean exam score if the entire population used
dw nobi
c. Write a sentence demonstrating how the results
from the hypothesis test and the confidence inter-
val would appear in a research report.
e-books.
18. A random sample of n = 16 scores is obtained from a
population with a mean of u = 45. After a treatment
Is administered to the individuals in the sample, the
sample mean is found to be M = 49.2.
nt the camnle standard deviation is
d to
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