Answered: sample of 10 observations taken from a…

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter9: Systems Of Equations And Inequalities

Section9.7: The Inverse Of A Matrix

Problem 34E

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Question

A sample of 10 observations taken from a normally distributed population yielded the following data.

43 54 32 48 46 39 47 35 41 58

a. What is the point estimate of mean?

b. Find t for 95% confidence level

Round the answer to three decimal places.

c. Make a 95% confidence interval for mean.

Round answers to four decimal places.

___________ < mean < ______________

d. What is the margin of error of estimate for mean in part c?

Round the answer to four decimal places.

CARE 316
P.A. G. O. D.
KA NA BA?
A WEBINAR ON:
DISCOVERING HOPE AMIDST ANXIETIES

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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