Give a 99.9% confidence interval, for μ₁n1n₂ =25, x₁ = 2.52, 81= 45, x₂ = 2.37, 82=Hint+1==0.971- ₂ given the following information.Use Technology Rounded to 2 decimal places.

Given that Sample size n1=25 , n2=45

Answered: Give a 99.9% confidence interval, for…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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One year, the mean age of an inmate on death row was 41.6 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is 40.9, with a standard deviation of 9.6. Construct a 95% confidence interval about the mean age. What does the interval imply? E Click the icon to view the table of critical t-values. Choose the correct hypotheses. Họ: H 41.6 H1: u 41.6 (Type integers or decimals. Do not round.) Construct a 95% confidence interval about the mean age. With 95% confidence, the mean age of a death row inmate is between years and years. (Round to two decimal places as needed.)
Assume that adults have IQ scores that are normally distributed with a mean of 103.8 and a standard deviation 15.7. Find the first quartile Q1, which is the IQ score separating the bottom 25% from the top 75%. The first quartile is
Mrs. Gallas wanted to estimate the average weight of an Oreo cookie to determine if theaverage weight was less than advertised. She selected a random sample of 30 cookies andfound the weight of each cookie (in grams). The mean weight was = 11.1921 grams with astandard deviation of sx = 0.0817 grams. Make a 95% confidence interval to estimate the truemean weight of an Oreo. 1. What is the formula for calculating the standard deviation of the sampling distribution of x? 2.What condition must be met to use this formula? Has it been met?
You measure 45 backpacks' weights, and find they have a mean weight of 37 ounces. Assume the population standard deviation is 3.5 ounces. Based on this, construct a 95% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places ± ounces
Consider the set of ordered pairs shown below. Asuming that the regression equation is y = 4.039 + 0.095x and the SSE= 21.068, construct a 95% confidence interval for x=5 4 3. y 7. 6. Click the icon to view a portion of the student's t-distribution table Calculate the upper and lower limits of the confidence interval. UCL =D LCL = (Round to three decimal places as needed.)
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
The scores on the Accuplacer test and High School GPAs are normally distributed.The Accuplacer test had a mean of 35 and a standard deviation of 9.High School GPAs had a mean of 2.7 and a standard deviation of 0.2.What high school GPA do you need to equal a score of 24 on the Accuplacer test?Give answer to two decimal places.
Assume that adults have IQ scores that are normally distributed with a mean of 96 and a standard deviation 19.3. Find the first quartile Q1,which is the IQ score separating the bottom 25% from the top 75%. The first quartile is?
You measure 33 backpacks' weights, and find they have a mean weight of 38 ounces. Assume the population standard deviation is 14.1 ounces. Based on this, construct a 99% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places ± ounces

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Give a 99.9% confidence interval, for μ₁ 0.97 n1 = 25, 1 = N₂ = 45, 2 - Hint H 2.52, 81 = 2.37, s2 = 1 2 given the following information. Use Technology Rounded to 2 decimal places.