for 90% CI; and 7 degree of freedom, value of t= | 1.895 | ||
therefore confidence interval=sample mean -/+ t*std error | |||
margin of errror =t*std error= | 1.619 | ||
lower confidence limit = | -3.744 | ||
upper confidence limit = | -0.506 |
from above 90% confidence interval =-3.74 to -0.51
The following table contains information on matched sample values whose differences are normally distributed. (You may...
The following table contains information on matched sample values whose differences are normally distributed. (You may find it useful to reference the appropriate table: z table or t table) Number Sample 1 Sample 2 1 17 20 2 12 12 3 21 22 4 21 20 5 16 21 6 14 16 7 17 18 8 17 20 a. Construct the 90% confidence interval for the mean difference μD. (Negative values should be indicated by a minus sign. Round intermediate...
The following table contains information on matched sample values whose differences are normally distributed. (You may find it useful to reference the appropriate table: z table or t table) Number Sample 1 Sample 2 1 18 22 2 13 11 3 22 23 4 23 20 5 17 21 6 14 16 7 18 18 8 19 20 Construct the 99% confidence interval for the mean difference μD. (Negative values should be indicated by a minus sign. Round intermediate calculations...
The following table contains information on matched sample values whose differences are normally distributed. (You may find it useful to reference the appropriate table: z table or t table) NumberSample 1Sample 21162021213320224202251720614167161881821 a. Construct the 99% confidence interval for the mean difference μD. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)
The following table contains information on matched sample values whose differences are normally distributed. Use Table 2. Number Sample 1 Sample 2 1 16 20 2 12 13 3 20 22 4 20 22 5 17 20 6 14 16 7 16 18 8 18 21 a. Construct the 99% confidence interval for the mean difference μD. (Negative values should be indicated by a minus sign. Round all intermediate calculations to at...
The following table contains information on matched sample values whose differences are normally distributed. Number - Sample 1 - Sample 2 1 17 21 2 12 13 3 21 22 4 23 19 5 19 19 6 13 17 7 19 16 8 17 21 a. Construct the 95% confidence interval for the mean difference μD.
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 = 32.7 x−2x−2 = 25.4 σ12 = 95.5 σ22 = 91.0 n1 = 16 n2 = 21 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 data drawn independently from normally distributed populations: (You may find it useful to reference the appropriate table: z table or t table 31.6x2 26.8 σ12-91.9 σ22-90.0 120 2-26 a. Construct the 99% confidence interval for the difference between the population means Negative values should be indicated b, a minus sign. Round all intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval is to
Return to question 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) X1 = 30.5 012 = 96.3 ni = 27. x2 = 24.7 022 = 93.1 n2 = 26 a. 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...
Consider the following competing hypotheses: (You may find it useful to reference the appropriate table: z table or ttable) -4.0, SD5.8,20 The following results are obtained using matched samples from two normally distributed populations a-1. Calculate the value of the test statistic, assuming that the sample difference is normally distributed. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic
Consider the following competing hypotheses: (You may find it useful to reference the appropriate table: z table or t table) H0: μD ≥ 0; HA: μD < 0 d¯d¯ = −3.5, sD = 5.5, n = 21 The following results are obtained using matched samples from two normally distributed populations: a-1. Calculate the value of the test statistic, assuming that the sample difference is normally distributed. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least...