Consider the following data from two independent samples with equal population variances. Construct a 99% confidence...
Consider the following data from two independent samples with equal population variances. Construct a 99% confidence interval to estimate the difference in population means. Assume the population variances are equal and that the populations are normally distributed.
|
x overbar 1 |
equals= |
37.1 |
x overbar 2 |
equals= |
32.8 |
|
|
s 1 |
equals= |
8.68 |
S2 |
equals= |
9.59 |
|
|
N1 equals= |
15 |
N2 |
equals= |
16 |
The 99% confidence interval is
( )(. ).
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Consider the following data from two independent samples with
equal population variances. Construct a 99% confidence...
are my answers correct? Consider the following data from two independent samples with equal population variances....
are my answers
correct?
Consider the following data from two independent samples with equal population variances. Construct a 99% confidence interval to estimate the difference in population means. Assume the population variances are equal and that the populations are normally distributed x1 = 67.9 s1 = 12.8 n1 = 10 X2 74.8 s2 = 8.1 n2 = 14 Click here to see the t-distribution table, page 1 Click here to see the t-distribution table,_page 2 The 99% confidence interval is...
Consider the following data from two independent samples. Construct a 99% confidence interval to estimate the...
Consider the following data from two independent samples. Construct a 99% confidence interval to estimate the difference in population proportions. x1 = 90 n1 100 x2 80 P2=100 The 99% confidence interval is ) (Round to four decimal places as needed.)
onsider the following data rom t o independent samples h equal population variances onstruct a 98%...
onsider the following data rom t o independent samples h equal population variances onstruct a 98% con ce interval to estimate the difference in population means ss me he population variances are equal and that the populations x137.1 S1 = 8.8 s2 = 9.2 The 98% confidence interval is (Round to two decimal places as needed.)
Two random samples are selected from two independent populations. A summary of the samples sizes, sample...
Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1=51, n2=46, x¯1=57.8, x¯2=75.3, s1=5.2 s2=11 Find a 94.5% confidence interval for the difference μ1−μ2μ1−μ2 of the means, assuming equal population variances. Confidence Interval =
The information below is based on independent random samples taken from two normally distributed populations having...
The information below is based on independent random samples taken from two normally distributed populations having equal variances. Based on the sample information, determine the 95% confidence interval estimate for the difference between the two population means. n1 14 x145 n2 13 2 47 The 95% confidence interval is s (μ1-12) s Round to two decimal places as needed)
Given two independent random samples with the following results: n1=6x‾1=131s1=14n n2=11x‾2=109s2=10 Use this data to find...
Given two independent random samples with the following results: n1=6x‾1=131s1=14n n2=11x‾2=109s2=10 Use this data to find the 99%99% confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 3 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
The information below is based on independent random samples taken from two normally distributed populations having...
The information below is based on independent random samples taken from two normally distributed populations having equal variances. Based on the sample information, determine the 90% confidence interval estimate for the difference between the two population means. n1 = 17 x1 44 n2 13 x2 = 49 The 90% confidence interval is s(uI-12) (Round to two decimal places as needed.) «D
Two random samples are selected from two independent populations. A summary of the samples sizes, sample...
Two random samples are selected from two independent populations. A summary of the samples sizes, sample means, and sample standard deviations is given below: n1= 37 n2=44 x-bar1= 58.6 x-bar2= 73.8 s1=5.4 s2=10.6 Find a 97% confidence interval for the difference μ1−μ2μ1−μ2 of the means, assuming equal population variances.
Consider the data to the right from two independent samples. Construct a 90 % confidence interval...
Consider the data to the right from two independent samples. Construct a 90 % confidence interval to estimate the difference in population means.Click here to view page 1 of the standard normal table. LOADING... Click here to view page 2 of the standard normal table. LOADING... x overbar 1 equals 43 x overbar 2 equals 51 sigma 1 equals 10 sigma 2 equals 14 n 1 equals 35 n 2 equals 40 The confidence interval is left parenthesis nothing comma...
Given two independent random samples with the following results: n1=8 x‾1=166 s1=28 n2=12 x‾2=194 s2=25 Use...
Given two independent random samples with the following results: n1=8 x‾1=166 s1=28 n2=12 x‾2=194 s2=25 Use this data to find the 90% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed. Copy Data Step 2 of 3 : Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.
are my answers
correct?
Consider the following data from two independent samples with equal population variances. Construct a 99% confidence interval to estimate the difference in population means. Assume the population variances are equal and that the populations are normally distributed x1 = 67.9 s1 = 12.8 n1 = 10 X2 74.8 s2 = 8.1 n2 = 14 Click here to see the t-distribution table, page 1 Click here to see the t-distribution table,_page 2 The 99% confidence interval is...
Consider the following data from two independent samples. Construct a 99% confidence interval to estimate the difference in population proportions. x1 = 90 n1 100 x2 80 P2=100 The 99% confidence interval is ) (Round to four decimal places as needed.)
onsider the following data rom t o independent samples h equal population variances onstruct a 98% con ce interval to estimate the difference in population means ss me he population variances are equal and that the populations x137.1 S1 = 8.8 s2 = 9.2 The 98% confidence interval is (Round to two decimal places as needed.)
The information below is based on independent random samples taken from two normally distributed populations having equal variances. Based on the sample information, determine the 95% confidence interval estimate for the difference between the two population means. n1 14 x145 n2 13 2 47 The 95% confidence interval is s (μ1-12) s Round to two decimal places as needed)
The information below is based on independent random samples taken from two normally distributed populations having equal variances. Based on the sample information, determine the 90% confidence interval estimate for the difference between the two population means. n1 = 17 x1 44 n2 13 x2 = 49 The 90% confidence interval is s(uI-12) (Round to two decimal places as needed.) «D
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