H0: p1 - p2 = < 0
Ha: p1 - p2 > 0
Here p1 is the population proportion of “happy” of Population 1 and p2 is the population proportion of “happy” of Population 2. Use the statistics data from a simple random sample of each of the two populations to complete the following:(10 marks)
|
Population 1 |
Population 2 |
Sample Size (n) |
1000 |
1000 |
Number of “yes” |
600 |
280 |
Question: Should H0 be rejected? Use the p-value and a level of significance of 0.05 to justify your answer. Use the above data to construct a 95% confidence interval for p1 - p2 Consider this hypothesis test: H0: p1 - p2 = 0 Ha: p1 - p2 > 0 Here p1 is the population proportion of “yes” of Population 1 and p2 is the population proportion of “yes” of Population 2. Use the statistics data from a simple random sample...
Consider the following competing hypotheses and accompanying sample data. H0: p1 − p2 ≥ 0 HA: p1 − p2 < 0 x1 = 248 x2 = 266 n1 = 444 n2 = 444 a. At the 1% significance level, find the critical value(s). b. Calculate the value of the test statistic.
onsider the hypothesis test below. H0: p 1 - p 2 ≤ 0 Ha: p 1 - p 2 > 0 The following results are for independent samples taken from the two populations. Sample 1 Sample 2 n1 = 200 n2 = 400 p1 = 0.23 p2 = 0.16 What is the value of the test statistic (to 2 decimals)? What is the p-value (to 4 decimals)? With α = .05, what is your hypothesis testing conclusion?
For a hypothesis test of H0:p1 − p2 = 0 against the alternative Ha:p1 − p2 ≠ 0, the test statistic is found to be 2.2. Which of the following statements can you make about this finding? a. The result is significant at both α = 0.05 and α = 0.01. b. The result is significant at α = 0.05 but not at α = 0.01. c. The result is significant at α = 0.01 but not at α =...
Consider the following hypothesis test. H0: 1 - 2≤ 0 Ha: 1 - 2> 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n 1 = 30 n 2 = 60 x 1 = 25.6 x 2 = 22.2 σ 1 = 5.2 σ 2 = 6 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4 decimals)? Use z-table. Use z-value rounded to...
Consider the following hypothesis test. H0: 1 - 2 ≤ 0 Ha: 1 - 2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n 1 = 30 n 2 = 70 x 1 = 25.5 x 2 = 22.1 σ 1 = 5.3 σ 2 = 6 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4 decimals)?...
eBook Video Consider the following hypothesis test. H0: 1 - 2 ≤ 0 Ha: 1 - 2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n 1 = 40 n 2 = 50 x 1 = 25.5 x 2 = 22.3 σ 1 = 5.6 σ 2 = 6 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to...
Consider the following hypothesis test. H0: μ1 − μ2 = 0 Ha: μ1 − μ2 ≠ 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n1 = 80 n2 = 70 x1 = 104 x2 = 106 σ1 = 8.4 σ2 = 7.2 (a) What is the value of the test statistic? (Round your answer to two decimal places.) (b) What is the p-value? (Round your answer to four decimal places.)...
Consider the hypothesis test below. H. : P1 - P20 H. : P1 P2 > 0 The following results are for independent samples taken from the two populations. Sample 2 Sample 1 11 = 100 ©1 = 0.27 n2 = 300 P2 = 0.18 Use pooled estimator of p. a. What is the value of the test statistic (to 2 decimals)? .16 b. What is the p-value (to 4 decimals)? 1.89 c. With a = .05, what is your hypothesis...
Consider the following hypothesis test. H0:mean 1 -mean 2 ≤ 0 Ha: mean1 -mean 2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 and sample 2: n 1 = 40 n 2 = 60 x 1 = 25.7 x 2 = 22.6 σ 1 = 5.6 σ 2 = 6 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4...