The z-value used in a 80% Confidence Interval is 1.645 2.575 1.282 1.96

Question

Question

The z-value used in a 80% Confidence Interval is

1.645

2.575

1.282

1.96

math Statistics-And-Probability

Answer 1

Answer #1

Solution :

Given that,

At 80% confidence level the z is ,

$\alpha$ = 1 - 80% = 1 - 0.80 = 0.20

$\alpha$ / 2 = 0.20 / 2 = 0.10

Z_/2 = Z _0.10 = 1.282

z-value = 1.282

Answer 2

Similar Homework Help Questions

In a 99% confidence interval the critical z values would be: +/- 1.96 +/- 2.575 +/-...

In a 99% confidence interval the critical z values would be: +/- 1.96 +/- 2.575 +/- 1.645 +/- 2.05
Match the confidence level with the confidence interval for the population mean. 1. ?bar±2.575(?/√n) 2. ?bar±1.645(?/√n)...

Match the confidence level with the confidence interval for the population mean. 1. ?bar±2.575(?/√n) 2. ?bar±1.645(?/√n) 3. ?bar±1.282(?/√n) A. 80% B. 90% C. 99%
(6 points) Match the confidence level with the confidence interval for u. 1. 1.96 () 2.3...

(6 points) Match the confidence level with the confidence interval for u. 1. 1.96 () 2.3 +1.645 () 3. + 2.575 () A. a. 95% B. b. 90% C. c. 99%

What is the confidence level for each of the following confidence intervals for µ? x ̅±1.96(δ⁄√n)...

What is the confidence level for each of the following confidence intervals for µ? x ̅±1.96(δ⁄√n) x ̅±1.645(δ⁄√n) x ̅±2.575(δ⁄√n) x ̅±1.282(δ⁄√n) x ̅±0.99(δ⁄√n)
The confidence level in a confidence interval is established by A Z-value, such as 1.96 for...

The confidence level in a confidence interval is established by A Z-value, such as 1.96 for a 95% confidence interval A t-value, using the appropriate degrees of freedom and the level desired The appropriate statistic for the test distribution The F statistic, using the appropriate degrees of freedom and the level desired
QUESTION 14 What is the critical value used to establish the rejection region when working with...

QUESTION 14 What is the critical value used to establish the rejection region when working with 90% confidence? A. 1.645 B. 1.96 C. 2.575 D. 3.00 QUESTION 15 What is the critical value used to establish the rejection region when working with 95% confidence? A. 1.645 B. 1.96 C. 2.575 D. 3.00 QUESTION 16 What is the critical value used to establish the rejection region when working with 99% confidence? A. 1.645 B. 1.96 C. 2.575 D. 3.00

For a two-sided confidence interval with 18 observations, σx known, and α = 0.10 the (critical) value...

For a two-sided confidence interval with 18 observations, σx known, and α = 0.10 the (critical) value is: Group of answer choices 1.282 1.645 1.96 1.333 1.74 2.11 1.345 1.761 2.145 1.356 1.782 2.179 none of these
Match the critical value with the confidence level. 2.576 1.96 1.645 2.326 1. 90% 2. 95%...

Match the critical value with the confidence level. 2.576 1.96 1.645 2.326 1. 90% 2. 95% 3. 98% 4. 99%
A 99% confidence interval for is given by: The multiplier is __________ . A. 2.576 B. 1.96...

A 99% confidence interval for is given by: The multiplier is __________ . A. 2.576 B. 1.96 C. None of the other choices represent a suitable response. D. 1.282 E. 3

3. P(z<zc)=0.95. Find ze (a) 1.28 (b) 1.645 (c) 1.96 (d) -1.645

3. P(z<zc)=0.95. Find ze (a) 1.28 (b) 1.645 (c) 1.96 (d) -1.645