Question

Consider the following data drawn from two independent normally distributed populations: Assume the population variances are...

Consider the following data drawn from two independent normally distributed populations:

Assume the population variances are 98.2 and 87.4 for groups 1 and 2 respectively. What is the 95% confidence interval for the difference in population means (µ1 - µ2)?

group 1, group 2

mean 25.7    30.6

sample size    20 25

Select one:

None of these are correct

(-9.67, -0.13)

(-10.58, 0.78)

(-12.37, 2.57)

(-7.85, 0.85)

Business   Finance   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

PLEASE GIVE UPVOTE

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Consider the following data drawn independently from normally distributed populations: (You may find it useful to...
Consider the following data drawn independently from normally distributed populations: (You may find it useful to reference the appropriate table: z table or t table) x−1x−1 = 25.7 x¯2x¯2 = 30.6 σ12 = 98.2 σ22 = 87.4 n1 = 20 n2 = 25 Construct the 95% confidence interval for the difference between the population means. (Negative values should be indicated by a minus sign. Round all intermediate calculations to at least 4 decimal places and final answers to 2 decimal...
Consider the following data from two independent samples. Assume that the populations are normally distributed. Sample...
Consider the following data from two independent samples. Assume that the populations are normally distributed. Sample 1 Sample 2 Sample mean: 68.7 Sample mean: 75.1 s1 = 12.5 s2 = 11.8 n1=10 n2=14 Is there evidence that the population variances are different? a=0.03 1. My question is what are the hypothesis? None of these options 2.Which of the following statements are true? Critical values for this test are 0.2230 and 3.7884 The value of the test statistic is 1.1222 The...
Consider the following data from two independent samples with equal population variances. Construct a 90% confidence...
Consider the following data from two independent samples with equal population variances. Construct a 90% confidence interval to estimate the difference in population means. Assume the population variances are equal and that the populations are normally distributed. x1 = 37.1 x2 = 32.2 s1 = 8.9 s2 = 9.1 n1 = 15 n2 = 16
Consider the following data from two independent samples with equal population variances. Construct a 98​% confidence...
Consider the following data from two independent samples with equal population variances. Construct a 98​% confidence interval to estimate the difference in population means. Assume the population variances are equal and that the populations are normally distributed. x1=37.9 x2=32.9 s1=8.7 s2=9.2 n1=15 n2=16 Click here to see the t-distribution table page 1, Click here to see the t-distribution table, page 2 The 98​% confidence interval is ​what two numbers. ​(Round to two decimal places as​ needed.)
Consider the following sample data drawn independently from normally distributed populations with equal population variances. Sample...
Consider the following sample data drawn independently from normally distributed populations with equal population variances. Sample 1 Sample 2 11.2 11.4 11.5 12.1 7.7 12.7 10.7 10.2 10.2 10.2 9.1 9.9 9.3 10.9 11.6 12.7 a. Construct the relevant hypotheses to test if the mean of the second population is greater than the mean of the first population. a) H0: μ1 − μ2 = 0; HA: μ1 − μ2 ≠ 0 b) H0: μ1 − μ2 ≥ 0; HA: μ1...
Consider the following sample data drawn independently from normally distributed populations with equal population variances. Use...
Consider the following sample data drawn independently from normally distributed populations with equal population variances. Use Table 2. Sample 1 Sample 2 11.0 9.3 10.8 11.9 7.3 12.5 12.5 11.4 10.6 9.7 9.8 10.0 7.2 12.6 10.5 12.7 Click here for the Excel Data File a. Construct the relevant hypotheses to test if the mean of the second population is greater than the mean of the first population. H0: μ1 − μ2 = 0; HA: μ1 − μ2 ≠ 0...
Consider the following data drawn independently from normally distributed populations: (You may find it useful to...
Consider the following data drawn independently from normally distributed populations: (You may find it useful to reference the appropriate table: z table or t table) x 1= 27.1 x2 = 30.3 σ12 = 89.5 σ22 = 92.3 n1 = 25 n2 = 31 a. Construct the 90% confidence interval for the difference between the population means. (Negative values should be indicated by a minus sign. Round all intermediate calculations to at least 4 decimal places and final answers to 2...
Consider the following measures based on independently drawn samples from normally distributed populations: (You may find...
Consider the following measures based on independently drawn samples from normally distributed populations: (You may find it useful to reference the appropriate table: chi-square table or F table) Sample 1: s21s12 = 276, and n1 = 51 Sample 2: s22s22 = 164, and n2 = 26 a. Construct the 90% interval estimate for the ratio of the population variances. (Round "F" value and final answers to 2 decimal places.) b. Using the confidence interval from Part (a), test if the...
consider the following results frmo two independent random samples taken from two populations. assume that the...
consider the following results frmo two independent random samples taken from two populations. assume that the variances are NOT equal. Population 1 population 2 sample size 50 50 sample mean 35 30 sample variance 784 100 a) what is the "degrees of freedom" for these data? b) what is the 95% confidence interval difference of the population means?
The following observations are from two independent random samples, drawn from normally distributed populations. Sample 1...
The following observations are from two independent random samples, drawn from normally distributed populations. Sample 1 [61.43, 78.97, 61.63, 70.48, 66.46, 66.82] Sample 2 [68.41, 67.18, 65.01, 66.88, 64.06] Test the null hypothesis H0:σ21=σ22 against the alternative hypothesis HA:σ21≠σ22. a) Using the larger sample variance in the numerator, calculate the F test statistic. Round your response to at least 3 decimal places.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT