Question
Two of the hottest smartphones on the market are the newly released iPhone6 and the Samsung...
Two of the hottest smartphones on the market are the newly released iPhone6 and the Samsung Galaxy S6. CNet.com offers online reviews of all major cell phones, including battery life tests. In a review of the iPhone6, the talk-time battery life of 35 iPhones was measured. Similarly, the talk-time battery life of 30 Galaxy S6s was measured.
Two outputs are given below. Which is appropriate for analyzing the data collected?
- Output 1
- Output 2
Using the StatCrunch output chosen above, determine if there is a difference in the mean battery life for the two phones. Use a significance level of 0.01 when conducting the test.
- Select the appropriate hypotheses. Make sure the notation used
in the hypotheses agrees with the type of samples selected in the
output.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1>μ2Ha:μ1>μ2Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1≠μ2Ha:μ1≠μ2Ho:μd=0Ho:μd=0
Ha:μd<0Ha:μd<0Ho:μd=0Ho:μd=0
Ha:μd>0Ha:μd>0Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1<μ2Ha:μ1<μ2Ho:μd=0Ho:μd=0
Ha:μd≠0Ha:μd≠0 - αα = reject HoHo if probability ? ≠ < > αα
- TS: t =
- probability = (make sure you reference the probabilities in the output you selected in the first question)
- decision: Select an answer fail to reject H₀ reject H₀
- At the 0.01 level, there Select an answer is not is significant evidence to conclude the mean battery life for an iPhone 6 is Select an answer different than less than greater than than the mean for a Galaxy S6.
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
Kindergarten students were participants in a study investigating fine motor skills of 37 children. The children...
Kindergarten students were participants in a study investigating
fine motor skills of 37 children. The children had their fine motor
skills measured before the study (a combination of hand use,
eye-hand coordination, and manual dexterity) and again after
undergoing 7 months of occupational therapy. With the instrument
used, high scores indicated stronger fine motor skills. Summary
statistics are given below:
Difference
n
Sample Diff
Std. Err.
Min
Max
d = Pre - Post
37
-7.8109
2.0715
-36
9
Determine what...
You wish to test the following claim (HaHa) at a significance level of α=0.01α=0.01. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.01α=0.01. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0Ho:μd=0
Ha:μd<0Ha:μd<0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
pre-test and post-test samples for n=50n=50 subjects. The average
difference (post - pre) is ¯d=−18.8d¯=-18.8 with a standard
deviation of the...
Part One: You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001....
Part One: You wish to test the following claim (HaHa) at a
significance level of α=0.001α=0.001.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1≠μ2Ha:μ1≠μ2
You believe both populations are normally distributed, but you do
not know the standard deviations for either. However, you also have
no reason to believe the variances of the two populations are not
equal. You obtain a sample of size n1=11n1=11 with a mean of
M1=76.2M1=76.2 and a standard deviation of SD1=8.7SD1=8.7 from the
first population. You obtain a sample of size...
You wish to test the following claim (HaHa) at a significance level of α=0.01α=0.01. Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1>μ2Ha:μ1>μ2...
You wish to test the following claim (HaHa) at a significance
level of α=0.01α=0.01.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1>μ2Ha:μ1>μ2
You believe both populations are normally distributed, but you
do not know the standard deviations for either. And you have no
reason to believe the variances of the two populations are equal
You obtain a sample of size n1=26n1=26 with a mean of
¯x1=74.8x¯1=74.8 and a standard deviation of s1=8.3s1=8.3 from the
first population. You obtain a sample of size n2=13n2=13 with a
mean...
You wish to test the claim that the first population mean is less than the second...
You wish to test the claim that the first population mean is
less than the second population mean at a significance level of
α=0.002α=0.002.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1<μ2Ha:μ1<μ2
You obtain the following two samples of data.
Sample #1
Sample #2
69.4
46.4
38.8
62.3
53.2
55.4
55.8
53.6
33.7
36.6
54.3
89.6
53.6
59.5
55.8
68.0
65.0
64.9
57.1
74.0
63.1
64.7
74.7
65.0
72.4
74.7
What is the test statistic for this sample?
test statistic = Round to 4 decimal
places....
You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.001α=0.001. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0Ho:μd=0
Ha:μd<0Ha:μd<0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
pre-test and post-test samples for n=50n=50 subjects. The average
difference (post - pre) is ¯d=−6.7d¯=-6.7 with a standard deviation
of...
You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.001α=0.001. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0Ho:μd=0
Ha:μd>0Ha:μd>0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
pre-test and post-test samples for n=22n=22 subjects. The average
difference (post - pre) is ¯d=25.6d¯=25.6 with a standard deviation...
You wish to test the claim that the first population mean is greater than the second...
You wish to test the
claim that the first population mean is greater than the second
population mean at a significance level of α=0.05α=0.05.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1>μ2Ha:μ1>μ2
You obtain the
following two samples of data.
Sample #1
Sample #2
74.3
68.4
88.5
64.0
102.8
65.5
77.5
97.4
44.0
60.0
75.0
78.6
81.3
70.8
54.5
74.3
85.0
71.4
71.4
57.7
40.8
64.4
What is the test statistic for this sample?
test statistic =____ Round to 3 decimal places.
What is the...
You wish to test the following claim (HaHa) at a significance level of α=0.02α=0.02. For the...
You wish to test the following claim (HaHa) at a significance
level of α=0.02α=0.02. For the context of this problem,
μd=μ2−μ1μd=μ2-μ1 where the first data set represents a pre-test and
the second data set represents a post-test.
Ho:μd=0Ho:μd=0
Ha:μd≠0Ha:μd≠0
You believe the population of difference scores is normally
distributed, but you do not know the standard deviation. You obtain
pre-test and post-test samples for n=14n=14 subjects. The average
difference (post - pre) is ¯d=−17.4d¯=-17.4 with a standard
deviation of the...
You wish to test the following claim (HaHa) at a significance level of α=0.001α=0.001. Ho:μ1=μ2Ho:μ1=μ2 Ha:μ1>μ2Ha:μ1>μ2...
You wish to test the following claim (HaHa) at a significance
level of α=0.001α=0.001.
Ho:μ1=μ2Ho:μ1=μ2
Ha:μ1>μ2Ha:μ1>μ2
You believe both populations are normally distributed, but you
do not know the standard deviations for either. And you have no
reason to believe the variances of the two populations are equal
You obtain a sample of size n1=27n1=27 with a mean of
¯x1=86.9x¯1=86.9 and a standard deviation of s1=11.7s1=11.7 from
the first population. You obtain a sample of size n2=14n2=14 with a
mean...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 1 minute ago
asked 1 minute ago
asked 17 minutes ago
asked 17 minutes ago
asked 20 minutes ago
asked 25 minutes ago
asked 43 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago