from a normal distribution: 7 9 1 7 14 15 14 20 15 6 2 (a)   Construct a 90% confidence interval for the population mean μ.                                         ≤μ≤  (b)   Construct a 95% confidence interval for the population mean μ.                                          ≤μ≤   q2) The data below represent a random sample of 9 scores on a statistics quiz. (The maximum possible score on the quiz is 10.) Assume that the scores are normally distributed with a standard deviation of 2.3. Estimate the population mean with 90% confidence. 7,9,8,5,4,8,2,9,87,9,8,5,4,8,2,9,8

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question

q1)the following random sample was selected from a normal distribution:
7 9 1 7 14 15 14 20 15 6 2
(a)   Construct a 90% confidence interval for the population mean μ.
                                        ≤μ≤ 
(b)   Construct a 95% confidence interval for the population mean μ.
                                         ≤μ≤

 

q2)

The data below represent a random sample of 9 scores on a statistics quiz. (The maximum possible score on the quiz is 10.) Assume that the scores are normally distributed with a standard deviation of 2.3. Estimate the population mean with 90% confidence.

7,9,8,5,4,8,2,9,87,9,8,5,4,8,2,9,8

Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limit

confidience interval=

Expert Solution
steps

Step by step

Solved in 3 steps with 2 images

Blurred answer
Similar questions
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON