ZuoTi.Pro
Question

n1=85 n2=90 y1=7.3 y2=7.1 s1=5.3 s2=5.2 find the estimated mean difference y1-y2? estimated mean difference? find...

n1=85 n2=90

y1=7.3 y2=7.1

s1=5.3 s2=5.2

find the estimated mean difference y1-y2?

estimated mean difference?

find the standard error of the estimated mean difference

calculate the t-statistics for the observed difference in mean, assuming that the true mean difference is 0

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
n1=85 n2=90 y1=7.3 y2=7.1 s1=5.3 s2=5.2 find the estimated mean difference y1-y2? estimated mean difference? find...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 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.

  • Sample 1 Sample 2 n1 = 15 n2 = 13 x1 =54 x2 = s1 =39...

    Sample 1 Sample 2 n1 = 15 n2 = 13 x1 =54 x2 = s1 =39 77 s2=46 Independent random samples selected from two normal populations produced the sample means and standard deviations shown to the right a. Assuming equal vanances, conduct the test Ho (μι-μ2) 0 against H. (m-H2)" 0 using α 0 05 b. Find and interpret the 95% confidence interval for (P:- a. Find the test statistic The test statistic is Round to two decimal places as...

  • n = 80 5,= 5.4 A market analyst wants to know if the new website he...

    n = 80 5,= 5.4 A market analyst wants to know if the new website he designed is showing increased Website 1 Website 2 page views per visit. A customer is randomly sent to one of two different websites, offering n = 95 the same products, but with different designs. y =6.9 y2 = 6.6 The data is shown in the table to the right. 5. = 53 Complete parts a through c below. a) Find the estimated mean difference,...

  • complete part c please A developer wants to know if the houses in two different neighborhoods...

    complete part c please A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She hires an assistant to collect a random sample of houses from each neighborhood and finds that the summary statistics for the two neighborhoods are as shown. Complete parts a through c below. ood 1 N ood 2 0n -544 2-455 81-74382-79 a) Find the estimated mean age difference,-between the two neighborhoods The estimated mean age difference...

  • Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of...

    Use the t-distribution table to find the critical value(s) for the indicated alternative hypotheses, level of significance a, and sample sizes n1 and n2. Assume that the samples are independent, normal, and random Answer parts (a) and (b) Ha H1H2, 0.005, n1 12, n2 10 (a) Find the critical value(s) assuming that the population variances are equal. Construct a 90% confidence interval for -H2 with the Bakery A Bakery B sample statistics for mean calorie content of two bakeries specialty...

  • Construct the indicated confidence interval for the difference between the two population means. Assume that the...

    Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are independent simple random samples selected from normally distributed populations. Also assume that the population standard deviations are equal (12) so that the standard error of the difference between means is obtained by pooling the sample variances. A researcher regularly and people who do not exercise regularly, Independent simple random samples were obtained of 16 people who do not exercise regularly and...

  • Would Not Approve of Driving Drunk Would Not Approve of Driving Drunk n1=40 n2=25 X¯1=2.1 X¯2=8.2...

    Would Not Approve of Driving Drunk Would Not Approve of Driving Drunk n1=40 n2=25 X¯1=2.1 X¯2=8.2 s1=1.8 s2=1.9 John Worrall and colleagues (2014) found that the fear of losing the good opinion of one’s family and peers kept people from driving home drunk. Let’s say we have two independent random samples of people: those who think that their peers would disapprove of them from driving drunk, and those who think that their peers would either not care or approve of...

  • 1) Consider two independent random samples of sizes n1 = 14 and n2 = 14, taken...

    1) Consider two independent random samples of sizes n1 = 14 and n2 = 14, taken from two normally distributed populations. The sample standard deviations are calculated to be s1= 1.98 and s2 = 5.71, and the sample means are x¯1=-10.2and x¯2=-2.34, respectively. Using this information, test the null hypothesis H0:μ1=μ2against the one-sided alternative HA:μ1<μ2, using Welch's 2-sample t Procedure for independent samples. a) Calculate the value for the t test statistic. Round your response to at least 2 decimal...

  • A random sample of n1 = 16 communities in western Kansas gave the following information for peopl...

    A random sample of n1 = 16 communities in western Kansas gave the following information for people under 25 years of age. x1: Rate of hay fever per 1000 population for people under 25 98 92 119 127 93 123 112 93 125 95 125 117 97 122 127 88 A random sample of n2 = 14 regions in western Kansas gave the following information for people over 50 years old. x2: Rate of hay fever per 1000 population for...

  • Q2) Independent-Samples t-Test (15 points total) Help with H, I, J, K, L please! In a...

    Q2) Independent-Samples t-Test (15 points total) Help with H, I, J, K, L please! In a research project, researchers collected demographic and health data from a sample of elderly residents in the community. To examine any possible gender differences in their sample, they want to see if the females and the males differ significantly on the education level (number of years of formal schooling). The researchers are not predicting any direction in the possible gender differences so the hypotheses should...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT