ZuoTi.Pro
Question

You may need to use the appropriate technology to answer this question. Use the sample data below to test the hypotheses H0: p1 = p2= p3 Ha: not all population proportions are equal where p is the population proportion of Yes responses for population i. Populations Response 1 2 3 155 140 101 Yes No 105 140 109 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value - Using a o.05 level of significance, state your conclusion. O Do not reject Ho- We conclude that not all population proportions are equal.
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


Answer Date: 28/01/2019 To test the hypothesis is that not all population proportions are equal at 5% significance leve The null and alternative hypothesis is, The null hypothesis is that all population proportions are equal. t not all population proportions are equal. The chi-square statistics is, By using Excel software, find chi-square test statistics with the help of following steps: 1) Import the data. 2) Select Contingency table from Chi-Square in MegaStat option from Add-Ins menu 3) Select Chi-Square and Expected frequencies in Output options 4) Click Ok.Chi-square Contingency Table Test for Independence Yes Observed Expected No Observed Expected Total Observed Expected Population 1 Population 2 Population 3 101 110.88 109 99.12 210 210.00 155 137.28 105 122.72 260 260.00 140 147.84 140 132.16 280 280.00 Total 396 396.00 354 354.00 750 750.00 7.592 chi-square 2 df 0225 p-value From the Excel output, the chi-square test statistic is 7.592 Thep-value is, From the Excel output, thep-value is 0.0225 Thep-value is 0.0225Decision The conclusion is that the significant p-value is less than 0.05 which is 0.0225, so the null hypothesis is rejected at 5% level of significance. There is sufficient evidence to indicate that not all population proportions are equal. The result is statistically significant.

0 0
Add a comment
Know the answer?
Add Answer to:
You may need to use the appropriate technology to answer this question. Use the sample data...
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

  • You may need to use the appropriate technology to answer this question Use the sample data...

    You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses P1P2 P3 Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population i. Populations 1 2 3 155 140 101 105 140 109 Yes No Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value Using...

  • You may need to use the appropriate technology to answer this question Use the sample data...

    You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population L Populations Response 1 2 3 Yes 140150 106 No 90 150 114 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = Using a...

  • You may need to use the appropriate technology to answer this question Use the sample data...

    You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population L Populations Response 1 2 3 Yes 140150 106 No 90 150 114 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = Using a...

  • You may need to use the appropriate technology to answer this question A researcher in a...

    You may need to use the appropriate technology to answer this question A researcher in a university's biology department studied the effect of agriculture contaminants on the stream fish population in northeastern Indiana. Specially-designed traps collected samples of fish at each of four stream locations. A research question was "Did the differences in agricultural contaminants found at the four locations alter the proportion of the fish population by gender?" Suppose observed frequencies were as follows Stream Locations Gender ABIC D...

  • You may need to use the appropriate appendix table or technology to answer this question. Consider...

    You may need to use the appropriate appendix table or technology to answer this question. Consider the following results for independent samples taken from two populations. Sample 1 Sample 2 n1 = 400 n2 = 300 p1 = 0.49 p2 = 0.34 (a) What is the point estimate of the difference between the two population proportions? (Use p1 − p2. ) (b) Develop a 90% confidence interval for the difference between the two population proportions. (Use p1 − p2. Round...

  • You may need to use the appropriate technology to answer this question. A sample of 15...

    You may need to use the appropriate technology to answer this question. A sample of 15 consumers provided the following product ratings for three different products. Five consumers were randomly assigned to test and rate each product. Product A B C 50 80 60 67 98 48 78 91 30 41 85 51 68 90 55 Use the Kruskal-Wallis test and α = 0.05 to determine whether there is a significant difference among the ratings for the products. State the...

  • You may need to use the appropriate technology to answer this question. Three admission test preparation...

    You may need to use the appropriate technology to answer this question. Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who used the programs provided the following data. Program A B C 530 450 600 400 530 640 470 400 590 540 420 470 470 490 570 620 360 610 550 560 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs....

  • You may need to use the appropriate technology to answer this question. Consider the following hypothesis...

    You may need to use the appropriate technology to answer this question. Consider the following hypothesis test. H0: μd ≤ 0 Ha: μd > 0 (a) The following data are from matched samples taken from two populations. Compute the difference value for each element. (Use Population 1 − Population 2.) Element Population Difference 1 2 1 21 18 2 28 25 3 18 17 4 20 19 5 26 24 (b) Compute d (c) Compute the standard deviation sd. (d)...

  • You may need to use the appropriate technology to answer this question. In a regression analysis ...

    You may need to use the appropriate technology to answer this question. In a regression analysis involving 27 observations, the following estimated regression equation was developed. ŷ = 25.2 + 5.5x1 For this estimated regression equation SST = 1,550 and SSE = 550. (a) At α = 0.05, test whether x1 is significant. State the null and alternative hypotheses. H0: β1 = 0 Ha: β1 ≠ 0H0: β0 = 0 Ha: β0 ≠ 0     H0: β1 ≠ 0 Ha: β1...

  • 2. -/16.66 points You may need to use the appropriate technology to answer this question To...

    2. -/16.66 points You may need to use the appropriate technology to answer this question To study the effect of temperature on yield in a chemical process, five batches were produced at each of three temperature + ASWSBE 131 3.Е.009.MI My Notes Ask Your Teacher levels. The results follow Temperature 50°C 60°C 70°C 31 30 35 23 26 35 23 37 24 27 29 29 36 25 Construct an analysis of variance table. (Round your values for MSE and F...

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