The following two samples were collected as matched pairs. Complete parts (a) through (d) below. Pair 1 2 3...
The following two samples were collected as matched pairs. Complete parts (a) through (d) below.
|
Pair |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
|
|---|---|---|---|---|---|---|---|---|
|
Sample 1 |
66 |
77 |
88 |
44 |
77 |
88 |
77 |
|
|
Sample 2 |
33 |
55 |
44 |
55 |
55 |
55 |
55 |
Calculate the appropriate test statistic and interpret the results of the hypothesis test using
alpha equals 0.01α=0.01.
Homework Answers
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The following two samples were collected as matched pairs. Complete parts (a) through (d) below. Pair 1 2 3...
The accompanying table shows two samples that were collected as matched pairs Pair Sample 1 Sample...
The accompanying table shows two samples that were collected as matched pairs Pair Sample 1 Sample 2 1 10 5 2 6 1 3 4 8 4 9 4 5 7 3 6 6 10 7 7 1 8 9 4 Calculate the appropriate test statistic and interpret the results of the hypothesis test using ?=0.01. The test statistic is Identify the? p-value and interpret the result.
a. Calculate the appropriate test statistic and interpret the results of the hypothesis test using alpha...
a. Calculate the appropriate test statistic and interpret the
results of the hypothesis test using alpha equals 0.10
.Find the critical values (two decimal places)
Interpret the results of the hypothesis test using alpha equals
0.05.
b. Identify the p?-value and interpret the result.
c. What assumptions need to be made in order to perform this?
procedure?
The following two samples were collected as matched pairs. Complete parts (a) through (d) below Pair Sample 1 6 Sample 2 45 553...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. a) Let the parameter of interest be the population mean of matched-pair differences for Sample 1 minus Sample 2. The 90% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn has a lower limit and an upper limit 0 (Round to two decimal places as...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. 5 Click the icon to view a portion of the Student's t-Distribution table. a) Construct a 95% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn. i Data Table - X UCLa = 0 LCLa = 0 (Round to two decimal places as needed.) Pair...
Now suppose a larger sample (30 pairs vs 10 pairs) was collected and a paired t test was used to analyze the data. The...
Now suppose a larger sample (30 pairs vs 10 pairs) was collected and a paired t test was used to analyze the data. The output is shown below. Paired Samples Statistics Mean N Std. Deviation Std. Error Mean Pair 1 Female salaries 6773.33 30 782.099 142.791 Male salaries 7213.33 30 875.227 159.794 Paired Samples Correlations N Correlation Sig. Pair 1 Female salaries & Male salaries 30 .881 .000 Paired Samples Test Paired Differences t df Sig. (2-tailed) Mean Std. Deviation...
To perform a test of the null and alternative hypotheses shown below, random samples were selected...
To perform a test of the null and alternative hypotheses shown below, random samples were selected from the two normally distributed populations with equal variances. The data are shown below. Test the null hypothesis using an alpha level equal to 0.01. Sample from Population 1 Sample from Population 2 31 39 28 34 35 35 40 38 32 32 36 26 35 44 33 28 35 31 31 34 Ho: μ1-uz"0 Determine the rejection region for the test statistic t....
Two random samples of student loans were collected: one from students at for-profit schools and another...
Two random samples of student loans were collected: one from students at for-profit schools and another from students at non-profit schools. The accompanying data show the sample sizes and the number of loans in each sample that defaulted. Complete parts a through c. Click the icon to view the loan data. a. Perform a hypothesis test using a = 0.10 to determine if the proportion of for-profit loans that default is larger than the proportion of loans for nonprofit schools...
For the data set shown below, complete parts (a) through (d) below. x 33 44 55...
For the data set shown below, complete parts (a) through (d)
below.
x
33
44
55
77
88
y
44
66
77
1313
1515
(a) Find the estimates of
beta 0β0
and
beta 1β1.
beta 0β0almost equals≈b 0b0equals= -3.244
(Round to three decimal places as needed.)
beta 1β1almost equals≈b 1b1equals=2.267
(Round to three decimal places as needed.)
(b) Compute the standard error, the point estimate for
sigmaσ.
s Subscript eseequals=nothing
(Round to four decimal places as needed.)
b) Compute the...
Use the following information to complete steps (a) through (d) below. A random sample of ny...
Use the following information to complete steps (a) through (d) below. A random sample of ny = 135 individuals results in xy = 40 successes. An independent sample of n2 = 150 individuals results in x2 = 60 successes. Does this represent sufficient evidence to conclude that P, <P2 at the a = 0.10 level of significance? (a) What type of test should be used? A. A hypothesis test regarding the difference between two population proportions from independent samples. B....
Consider the following hypothesis statement using alpha =0.01and data from two independent samples. Assume the population...
Consider the following hypothesis statement using alpha =0.01and data from two independent samples. Assume the population variances are not equal and the populations are normally distributed. Complete parts a and b. Upper H 0 : mu1 - mu 2= 0 x overbar 1= 116.5 x overbar 2 = 121.0 Upper H 1 : mu 1 - mu 2 not equals 0 s 1 = 25.7 s 2 = 15.4 n 1 = 14 n 2 = 21 a. Calculate the...
a. Calculate the appropriate test statistic and interpret the
results of the hypothesis test using alpha equals 0.10
.Find the critical values (two decimal places)
Interpret the results of the hypothesis test using alpha equals
0.05.
b. Identify the p?-value and interpret the result.
c. What assumptions need to be made in order to perform this?
procedure?
The following two samples were collected as matched pairs. Complete parts (a) through (d) below Pair Sample 1 6 Sample 2 45 553...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. a) Let the parameter of interest be the population mean of matched-pair differences for Sample 1 minus Sample 2. The 90% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn has a lower limit and an upper limit 0 (Round to two decimal places as...
The accompanying table contains two samples that were collected as matched pairs. Complete parts a and b below. Click the icon to view the data table. 5 Click the icon to view a portion of the Student's t-Distribution table. a) Construct a 95% confidence interval to estimate difference in means between the populations from which Sample 1 and 2 were drawn. i Data Table - X UCLa = 0 LCLa = 0 (Round to two decimal places as needed.) Pair...
To perform a test of the null and alternative hypotheses shown below, random samples were selected from the two normally distributed populations with equal variances. The data are shown below. Test the null hypothesis using an alpha level equal to 0.01. Sample from Population 1 Sample from Population 2 31 39 28 34 35 35 40 38 32 32 36 26 35 44 33 28 35 31 31 34 Ho: μ1-uz"0 Determine the rejection region for the test statistic t....
Two random samples of student loans were collected: one from students at for-profit schools and another from students at non-profit schools. The accompanying data show the sample sizes and the number of loans in each sample that defaulted. Complete parts a through c. Click the icon to view the loan data. a. Perform a hypothesis test using a = 0.10 to determine if the proportion of for-profit loans that default is larger than the proportion of loans for nonprofit schools...
For the data set shown below, complete parts (a) through (d)
below.
x
33
44
55
77
88
y
44
66
77
1313
1515
(a) Find the estimates of
beta 0β0
and
beta 1β1.
beta 0β0almost equals≈b 0b0equals= -3.244
(Round to three decimal places as needed.)
beta 1β1almost equals≈b 1b1equals=2.267
(Round to three decimal places as needed.)
(b) Compute the standard error, the point estimate for
sigmaσ.
s Subscript eseequals=nothing
(Round to four decimal places as needed.)
b) Compute the...
Use the following information to complete steps (a) through (d) below. A random sample of ny = 135 individuals results in xy = 40 successes. An independent sample of n2 = 150 individuals results in x2 = 60 successes. Does this represent sufficient evidence to conclude that P, <P2 at the a = 0.10 level of significance? (a) What type of test should be used? A. A hypothesis test regarding the difference between two population proportions from independent samples. B....
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