Question

Consider the following random sample from a normal population: 14, 10, 13, 16, 12, 18, 15, and 11. What is the 95% confidence interval for the population variance? a) 1.76 to 5.43 b) 2.86 to 24.53 c) 1.12 to 5.69 d) 6.54 to 38.82 e) 3.11 to 29.51

Name: consider the following random sample from a normal population 14 10 13 16 12 18 15 and 11 what is the 95 confidence interval for the population variance a 176 to 543 b 286 to 2453 c 112 to 5 20942
Uploaded: 2023-07-16T22:12:12-08:00
Duration: 2 min 5 s
Channel: Prabhakar Kumar
Description: consider the following random sample from a normal population 14 10 13 16 12 18 15 and 11 what is the 95 confidence interval for the population variance a 176 to 543 b 286 to 2453 c 112 to 5 20942

          Consider the following random sample from a normal population:
14, 10, 13, 16, 12, 18, 15, and 11. What is the 95% confidence
interval for the population variance?
a) 1.76 to 5.43
b) 2.86 to 24.53
c) 1.12 to 5.69
d) 6.54 to 38.82
e) 3.11 to 29.51

Added by Gina E.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Prabhakar Kumar

07/16/2023

Step 1

First, we need to find the sample mean (x̄) and the sample variance (s²). x̄ = (14 + 10 + 13 + 16 + 12 + 18 + 15 + 11) / 8 = 99 / 8 = 12.375 Now, we need to find the deviations from the mean and square them: (14 - 12.375)² = 2.640625 (10 - 12.375)² = Show more…

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Consider the following random sample from a normal population: 14, 10, 13, 16, 12, 18, 15, and 11. What is the 95% confidence interval for the population variance? a) 1.76 to 5.43 b) 2.86 to 24.53 c) 1.12 to 5.69 d) 6.54 to 38.82 e) 3.11 to 29.51