Answered: X1=45 N1=35 S1=9 X2=47 N2=40 S2=8 Find…

Name: X1=45N1=35S1=9X2=47N2=40S2=8Find the confidence interval of 80%?
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: X1=45N1=35S1=9X2=47N2=40S2=8Find the confidence interval of 80%?

Math

Statistics

X1=45 N1=35 S1=9 X2=47 N2=40 S2=8 Find the confidence interval of 80% ?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: i found the z value of 0.8563 from standard normal table is (0.22+0.21)/2=0.215. So the p-value is…

A: The calculation of the new confidence interval using the z-table is shown below. The new confidence…

Q: n=350 and p' (p-prime) = 0.82, construct a 95% confidence interval. Give your answers to three…

Q: Sample A has 800 number of successes from a sample size of 805. Sample 8 has 792 number of successes…

A: Given that Sample A Sample B Sample size (n1) = 805 Sample size (n2) = 811 Number of…

Q: f n = 540 and ˆpp^ (p-hat) = 0.7, construct a 99% confidence interval.Give your answers to three…

Q: f n = 243 and ˆpp^ = 0.267, construct a 95% confidence interval. Give your answers to three…

A: Given, (1-α)100% = 95% α= 0.05 Zα2 =Z0.025 = 1.96 Using Excel function=NORMSINV(0.025)

Q: Find the sample size for some finite and infinite population when the percentage of 4300 population…

A: It is given that, Population size, N=4300 Level of significance= 0.01. So. Zα = 1.28 Percentage of…

Q: If n=31n=31, ¯xx¯=44, and s=16s=16, construct a confidence interval at a 98% confidence level. Give…

Q: n = 580 and ˆpp^ (p-hat) = 0.35, construct a 95% confidence interval.

A: Given n = 580 p^ (p-hat) = 0.35,

Q: If n=320 and p' (p-prime) = 0.82, construct a 95% confidence interval. Give your answers to three…

Q: X₁=141 X ₂ = 150 X = - 9 s² = 100 nd = 25 Find a 90%. confidence interval for the mean difference Md…

A: The question is about confidence intervalGiven :Mean of the differences ( ) = -9Variance of the…

Q: A random sample of 36 textbook prices is taken from a local college bookstore. The mean of the…

A: Given data, x=72 s=24 n=36 df=n-1=35 α=0.10

Q: 95% of confidence interval of a population proportion is (0.64,0.84) What is the margin of error.…

A: Answer: From the given data, 95% of confidence interval of a population proportion is (0.64, 0.84)…

Q: If n=280 and ˆpp^ (p-hat) = 0.39, construct a 95% confidence interval. Give your answers to three…

A: The given sample size, n=280. The sample proportion, p^=0.39 The level of confidence is 0.95. Need…

Q: All else equal, an increase in the level of confidence will cause a(n) increase decrease O O in the…

A: From the provided information,The statement is that if all else equal then an increase in the level…

Q: Find the critical value za/2 that corresponds to the confidence level 97%. Za12 = (Round to two…

A: z-critical value at 97% confidence =?

Q: Find only t* for the following cases (Round to 4 decimal places): (a) n = 18 and for 99% confidence…

Q: An SRS of 500 high school seniors gained an average of ?¯=22 points in their second attempt at the…

A: a)We need to construct the 90% confidence interval for the population mean μ. The following…

Q: You are analyzing a confidence interval using a 99% confidence level in your analysis. You collect a…

A: Introduction: It is required to construct the 99% confidence interval of the unknown population…

Q: Express the confidence interval 30%±3.2%30%±3.2% in interval form

Q: The average measured verbal IQ (IQV) scores of children is 100. In a sample of 20 children, the…

A: The objective of this question is to calculate the 98% confidence interval for the true mean IQV of…

Q: Suppose that the confidence interval for the difference in the average brain wave activity is :…

A: Given: The confidence interval based on the difference including the average brain based on the wave…

Q: n1=685pˆ1=0.41n1=685p^1=0.41 n2=510pˆ2=0.23n2=510p^2=0.23 Use this data to find the 80%80%…

A: Obtain the 80% confidence interval for the difference between two proportions. The 80% confidence…

Q: If we have a 95% confidence interval of (15, 20) for the number of hours that USF students work at a…

A: Confidence interval show that true effect or true population range. Given : Confidence level…

Q: In a city, out of 200 people sampled, 146 had kids. Based on this, construct population proportion…

Q: n=20n=20, ¯xx¯=47, and s=2s=2, construct a confidence interval at a 98% confidence level. Give your…

A: Cdd in

Q: If n = 560 and ˆpp^ (p-hat) = 0.25, construct a 99% confidence interval.

A: Calculations: x=140 and N= 560

Q: If n=490 and ˆpp^ (p-hat) = 0.19, construct a 99% confidence interval. Give your answers to three…

A: Given information- Sample size, n = 490 Confidence level, c = 99% Significance level, α = 0.01…

Q: If n=17n=17, ¯xx¯=35, and s=15s=15, construct a confidence interval at a 95% confidence level. Give…

A: It is given that the sample mean is 35 and the sample standard deviation 15.

Q: Confidence interval for the difference between two population means. Find what are being asked. A…

A: The following information is obtained from the provided For the first group: The sample size, n1=16…

Q: Estimate the mean and the 95 % confidence interval.

A: The observed data for testing the lifetime of light bulbs (in hours) is as follows;1020, 1350, 1559,…

Q: If n = 420 and ˆpp^ (p-hat) = 0.75, construct a 99% confidence interval. Give your answers to three…

A: Solution: From the given information, p-hat=0.75 and n=420. The confidence level is 0.99.

Q: (b) What is the 95% confidence interval estimate of the population mean examination score if a…

Q: A random sample of 25 individuals finds a sample mean value of 18 and sample standard deviation of…

A: Given information- Sample size (n) = 25 Mean x̅ = 18 Standard deviation (s) = 6 Significance…

Q: The confidence interval with mean value 2 and margin error is 1.3 is

A: Given that mean = 2 Margin of error = 1.3

Q: How can I find ta/2 for a confidence level of 90% when n=6

A: Using t-table: Refer to t-table to find corresponding to find with confidence level of 90% with…

Q: what is the 90% confidence interval of the standard deviation where n= 20 and s=40.5

Q: If n = 140 and ˆpp^ = 0.25, construct a 99% confidence interval.Give your answers to three decimals

A: It is given that p̂ is 0.25 and n is 140.

Q: Choose the correct option and proof the reason why you choose that one and give the evidences.…

A: 1. **Type of Estimate:** - The confidence interval provided is (-0.31, 0.49). This interval…

Q: If n=21n=21, ¯xx¯=49, and s=17s=17, construct a confidence interval at a 99% confidence level. Give…

A: The summary of statistics is, n=21,x¯=49, s=17 The degree of freedom is, df=n-1 =21-1 =20…

Q: If n = 440 and ˆpp^ = 0.52, construct a 90% confidence interval. Give your answers to three…

Q: N1=94 X1=26 N2=78 X2=39 Confidence interval 99% ?

A: The sample proportions are,

Q: Give a 99.5% confidence interval, for μ₁ 2.63, S1 1 3.11, s2 0.6 n1 40, x₁ 20, ₂ = n₂ = है H - - = 2…

A: given datan1=40n2=20x1=2.63x2=3.11s1=1s2=0.6CI=0.9950

Q: If n = 200 and ˆpp^ (p-hat) = 0.85, construct a 95% confidence interval. Give your answers to three…

Topic Video

Question

X1=45 N1=35 S1=9 X2=47 N2=40 S2=8 Find the confidence interval of 80% ?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Given

VIEW

Answer

VIEW

Step by step

Solved in 2 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

Construct a confidence interval for P1 - P2 at the given level of confidence. X1 = 26, n, = 236, x2 = 30, n2 = 304, 90% confidence %3D The researchers are% confident the difference between the two population proportions, p, - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)
If n=190 and ˆpp^ (p-hat) = 0.95, construct a 99% confidence interval.Give your answers to three decimals.
What is the positive t-value for a confidence interval for the population mean with a sample size of 30 at a 90% confidence level? Express with 3 decimals
Express the confidence interval 66%±3%66%±3% in interval form.
You want to examine the effectiveness of a new tutoring program at SWC. A sample of n=9 stats students is used to evaluate t. Each students grade point average is recorded before the program and after the program. The average GPA improved by Mp=0.60 points with s^2 =0.09. the researcher would like to use the sample to estimate how much effect the workshop would have for the entire college population. Which of the following is the 80% confidence interval for these data? A. μD=0.60 + 0.10(1.397) B. μD=0.60 + 0.09(1.860) C. μD=0.60 + 0.01(1.397) D. μD =0.60 + 0.10(1.860)
100 students take a test in 2018. The average score was 75 and the standard deviation of the final exams scores was 5. The following year (2019), the professor changed her teaching style, and then taught the class to 90 students, gave the same exam, and found an average score of 80 and a standard deviation of 8.. Compute the 95% confidence interval for the final exam score in ECON 540 for 2018. Interpret the interval.
Step 3 The necessary value for Za/2 was determined to be 1.645. Recall the given information. Sample 1 n1 = 400 P1 = 0.56 P2 = 0.41 Substitute these values to first find the lower bound for the confidence interval, rounding the result to four decimal places. P₁(1-P₁) P₂(1-P₂) 1 72 lower bound = P₁-P₂-²a/2 = 0.560.41 Sample 2 n2 = 300 = 0.0559 = 0.56 0.41 = 02441 X Substitute these values to find the upper bound for the confidence interval, rounding the result to four decimal places. P₁(1-P₁) P₂(1-P₂) upper bound = P₁ P₂ + ²a/2√ n1 n2 X + ✔ - 1.645, + 0.56(1 0.56) 0.41(10.41) 300 +1.645. 400 0.56(1 0.56) + 400 + 0.41(1 0.41) 300
find out the confidence interval for population proportion for given data [ 4 decimal places ] population standard deviation =4 xbar = 123.5 sample size= 100 c= 0.95
How do you Express the confidence interval (0.839, 0.958) in the form of p±E?
An article claims that babies spend twice as much time in REM (rapid eye movement) sleep than adults. This implies that babies have an average of 6 hours of REM sleep per night. A doctor would like to test the hypotheses = 6 versus ≠ 6 where = the true mean amount of REM sleep per night for babies. A 95% confidence interval for the true mean amount of REM sleep per night for babies is (5.45, 6.25) hours. Based on the confidence interval, what conclusion would you make for a test of these hypotheses? The 95% confidence interval include as a plausible value, so we H0. We convincing evidence that the true mean amount of REM sleep per night for babies 6 hours.
Solve Question 2 Please show work
A random sample of 11 items is drawn from a population whose standard deviation is unknown. The sample mean is x=920 and the sample standard deviation is s=25. Use Appendix D to find the values of student's t