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Consider the following results for two samples randomly taken from two populations. Sample A Sample B...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample 2 n1 = 40 n2 = 30 x1 = 13.3 x2 = 11.4 σ1 = 2.2 σ2 = 3.5 a. state the null and alternative hypothesis b. which test should we use for this problem c. what is the test statistic d. what is the critical value e. what is the p-value
#3. 2 Consider the following results for two samples randomly taken from two populations. AWN Sample...
#3. 2 Consider the following results for two samples randomly taken from two populations. AWN Sample Size Sample Mean 7 Sample Standard Deviation Sample A Sample B 20 25 28 22 9 a. Determine the degrees of freedom for the t distribution. 10 b. At 95% confidence, what is the margin of error? 11 c. Develop a 95% confidence interval for the difference between the two population means.
A sample of 10 mothers wants to know if they sleep less than the population in...
A sample of 10 mothers wants to know if they sleep less than the population in terms of the number of hours they sleep. Their average number of hours they sleep is 6.8. We know that the average hours of sleep in the population is 8 with a standard deviation of 3. Conduct a z test to see if the sample of mothers differs from the population. (Be sure to complete all four steps of a hypothesis test.) α=.05 Ackerman...
Consider the following results for two independent random samples taken from two populations. Sample 2 n2-30...
Consider the following results for two independent random samples taken from two populations. Sample 2 n2-30 x-13.3x2-114 Sample 1 X2 11.4 -2.2 ơ2-3.5 a. state the null and alternative hypothesis b. which test should we use for this problem c. what is the test statistic d. what is the critical value e. what is the p-value
The table below contains the results from random samples of two populations. Sample 1 38.1 35.3...
The table below contains the results from random samples of two populations. Sample 1 38.1 35.3 43.2 40.4 43.8 wa 34.9 39.7 ca 35.8 293 41.3 47.1 45.4 35 Sample 2 35.1 42.4 33.1 41.9 53.5 10 40.6 18 33.8 20 48.9 23 33.6 18.5 44.5 53.7 At a = 0.10, test the claim that the variance of Population 1 is not the same as the variance of Population 2. 1. The alternate hypothesis is Ha: 001702 81 #82 Oss...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations....
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 F1 = 22.49 11 = 2.54 P1 = 15 Sample 2 F2 = 27.31 3 = 3.08 P2 = 18 Test the null hypothesis HO : H1 = 2 against the alternative hypothesis HA: MI <H2 a) To save you on calculations, I will tell you that the standard error of the difference in sample means (SE(X_1 bar - X_2 bar)) is...
Consider the following results for independent samples taken from two populations. Sample 1 Sample 2 ni...
Consider the following results for independent samples taken from two populations. Sample 1 Sample 2 ni = 400 n2= 300 P1= 0.44 P2= 0.36 a. What is the point estimate of the difference between the two population proportions (to 2 decimals)? b. Develop a 90% confidence interval for the difference between the two population proportions (to 4 decimals). Use z-table. to c. Develop a 95% confidence interval for the difference between the two population proportions (to 4 decimals). Use z-table....
The table below contains the results from random samples of two populations. Sample 51.6 40.3 36.9...
The table below contains the results from random samples of two populations. Sample 51.6 40.3 36.9 34.7 34.7 40.2 40.2 43 32.6 Sample 2 32.3 35.8 37.7 40.8 40.5 45.1 34.2 29.3 43 45 365 30.5 28.2 44.7 29.4 29.4 43.7 44.7 41.5 33.5 At a = 0.10, test the claim that the standard deviation of Population 1 is less than the standard deviation of Population 2. 1. The alternate hypothesis is Ha: Os <s Οσι < σ2 OO <o...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample...
Consider the following results for two independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 40 n 2 = 35 x 1 = 13.8 x 2 = 11.3 σ 1 = 2.5 σ 2 = 3 What is the point estimate of the difference between the two population means? (to 1 decimal) Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). Use z-table. ( , ) Provide a...
The following information was obtained from independent random samples. Assume normally populations with equal Sample 1...
The following information was obtained from independent random samples. Assume normally populations with equal Sample 1 Sample 2 12 Sample Size 10 Sample Mean 52 Sample Variance 85 We are interested in testing Hai sample 1 -Hsample 2 0 Step 2 of 3: Determine the p-value for the test. TablesKeypad Answer 1 Point Next Prev O p-value c 0.025 0.025< p-value <0.05 Op-value <0.1 。p-value > 0.2 None of the above o 2019 8 3 of 3 The following information...
#3. 2 Consider the following results for two samples randomly taken from two populations. AWN Sample Size Sample Mean 7 Sample Standard Deviation Sample A Sample B 20 25 28 22 9 a. Determine the degrees of freedom for the t distribution. 10 b. At 95% confidence, what is the margin of error? 11 c. Develop a 95% confidence interval for the difference between the two population means.
Consider the following results for two independent random samples taken from two populations. Sample 2 n2-30 x-13.3x2-114 Sample 1 X2 11.4 -2.2 ơ2-3.5 a. state the null and alternative hypothesis b. which test should we use for this problem c. what is the test statistic d. what is the critical value e. what is the p-value
The table below contains the results from random samples of two populations. Sample 1 38.1 35.3 43.2 40.4 43.8 wa 34.9 39.7 ca 35.8 293 41.3 47.1 45.4 35 Sample 2 35.1 42.4 33.1 41.9 53.5 10 40.6 18 33.8 20 48.9 23 33.6 18.5 44.5 53.7 At a = 0.10, test the claim that the variance of Population 1 is not the same as the variance of Population 2. 1. The alternate hypothesis is Ha: 001702 81 #82 Oss...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 F1 = 22.49 11 = 2.54 P1 = 15 Sample 2 F2 = 27.31 3 = 3.08 P2 = 18 Test the null hypothesis HO : H1 = 2 against the alternative hypothesis HA: MI <H2 a) To save you on calculations, I will tell you that the standard error of the difference in sample means (SE(X_1 bar - X_2 bar)) is...
Consider the following results for independent samples taken from two populations. Sample 1 Sample 2 ni = 400 n2= 300 P1= 0.44 P2= 0.36 a. What is the point estimate of the difference between the two population proportions (to 2 decimals)? b. Develop a 90% confidence interval for the difference between the two population proportions (to 4 decimals). Use z-table. to c. Develop a 95% confidence interval for the difference between the two population proportions (to 4 decimals). Use z-table....
The table below contains the results from random samples of two populations. Sample 51.6 40.3 36.9 34.7 34.7 40.2 40.2 43 32.6 Sample 2 32.3 35.8 37.7 40.8 40.5 45.1 34.2 29.3 43 45 365 30.5 28.2 44.7 29.4 29.4 43.7 44.7 41.5 33.5 At a = 0.10, test the claim that the standard deviation of Population 1 is less than the standard deviation of Population 2. 1. The alternate hypothesis is Ha: Os <s Οσι < σ2 OO <o...
The following information was obtained from independent random samples. Assume normally populations with equal Sample 1 Sample 2 12 Sample Size 10 Sample Mean 52 Sample Variance 85 We are interested in testing Hai sample 1 -Hsample 2 0 Step 2 of 3: Determine the p-value for the test. TablesKeypad Answer 1 Point Next Prev O p-value c 0.025 0.025< p-value <0.05 Op-value <0.1 。p-value > 0.2 None of the above o 2019 8 3 of 3 The following information...
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