Consider the following data drawn independently from normally distributed populations: (You may find it useful to reference the appropriate table: z table or ttable) X1 = -28.3 $1 = 8.7 n₁ = 22 X2 = -18.5 $₂² = 7.9 n2 = 16 a. Construct the 95% confidence interval for the difference between the population means. Assume the population variances are unknown but equal. (Round final answers to 2 decimal places.) Confidence interval is to
Consider the following data drawn independently from normally distributed populations: (You may find it useful to reference the appropriate table: z table or ttable) X1 = -28.3 $1 = 8.7 n₁ = 22 X2 = -18.5 $₂² = 7.9 n2 = 16 a. Construct the 95% confidence interval for the difference between the population means. Assume the population variances are unknown but equal. (Round final answers to 2 decimal places.) Confidence interval is to
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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 or [t table](#))*
\[
\overline{X}_1 = -28.3 \quad \quad \quad \overline{X}_2 = -18.5
\]
\[
s_1^2 = 8.7 \quad \quad \quad s_2^2 = 7.9
\]
\[
n_1 = 22 \quad \quad \quad n_2 = 16
\]
**a.** Construct the 95% confidence interval for the difference between the population means. Assume the population variances are unknown but equal. *(Round final answers to 2 decimal places.)*
Confidence interval is [ \_\_\_ ] to [ \_\_\_ ].](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0f574bbf-19a1-4ad7-b169-9f5be2ce0cc8%2Ff4ad48cb-2fdc-49a4-a1d8-b96529bd3bc2%2Fxu01fk_processed.png&w=3840&q=75)
Transcribed Image Text:**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](#))*
\[
\overline{X}_1 = -28.3 \quad \quad \quad \overline{X}_2 = -18.5
\]
\[
s_1^2 = 8.7 \quad \quad \quad s_2^2 = 7.9
\]
\[
n_1 = 22 \quad \quad \quad n_2 = 16
\]
**a.** Construct the 95% confidence interval for the difference between the population means. Assume the population variances are unknown but equal. *(Round final answers to 2 decimal places.)*
Confidence interval is [ \_\_\_ ] to [ \_\_\_ ].
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