BuyFind

Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836
BuyFind

Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836

Solutions

Chapter
Section
Chapter 6, Problem 6.3P
Textbook Problem
504 views

For each of the following confidence levels, determine the corresponding Z score.

Confidence Level Alpha Area Beyond Z Z score
95% 0.05 0.0250 ± 1.96
94%
92%
97%
98%

Expert Solution
To determine

The Z score

Explanation of Solution

Formula:

The relationship between confidence interval and level of significance (the probability of error) is:

C.I = 1 – α

Calculation:

For the confidence interval 94%, the alpha value is:

α= 1 – 0.94 = 0.06

The next step to find the Z score, one has to divide the α value into the upper and lower tails of the distribution.

Here, for α= 0.06, one can place 0.03 in the lower tail and 0.03 in the upper tail.

Therefore, the Z score beyond which lies a proportion of 0.03 of the total area is ± 1.88

Want to see this answer and more?

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

See solution

Additional Math Textbook Solutions

Find more solutions based on key concepts
Show solutions
Proof Prove that if f has an inverse function, then (f1)1=f

Calculus: Early Transcendental Functions

In Exercises 516, evaluate the given quantity. log5125

Finite Mathematics and Applied Calculus (MindTap Course List)

Sketch the region in the xy-plane. 48. {(x, y) | |x| 3 and |y| 2}

Single Variable Calculus: Early Transcendentals, Volume I

In Exercises 13-20, sketch a set of coordinate axes and plot each point. 14. (1, 3)

Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach

Find expressions for the quadratic functions whose graphs are shown.

Single Variable Calculus: Early Transcendentals

True or False: If , then converge absolutely.

Study Guide for Stewart's Multivariable Calculus, 8th

The radius of convergence of is: 1 3 ∞

Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th

Summarize the major APA ethical standards concerning the care and use of animals in research.

Research Methods for the Behavioral Sciences (MindTap Course List)

Consider a variation of the PDC decision tree shown in Figure 20.5. The company must first decide whether to un...

Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)

Carbon Dating Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric pai...

A First Course in Differential Equations with Modeling Applications (MindTap Course List)

Evaluating Formulas In Exercises S-21 through S-30, you are given a formula that you are asked to evaluate with...

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)