Suppose we take a random sample, N = 64, from the Texas population of adults and find that the average number of years in school for this sample is 14, with a SD of 4. What is the approximate 95% confidence interval around that average? From 6 to 22

Suppose we take a random sample, N = 64, from the Texas population of adults and find that the average number of years in school for this sample is 14, with a SD of 4. What is the approximate 95% confidence interval around that average? From 6 to 22

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: Suppose that you take 1000 simple random samples from a population and that, for each sample, you…

Q: Question 3 A researcher wanted to know the percentage of judges who are in favor of the death…

A: Question 3: The study is about the percentage of judges who are in favor of the death penalty. A…

Q: A survey of women who are the main meal preparers in their households reported that 80% know that…

A: From the provided information, A survey of women who are the main meal preparers in their households…

Q: 13. Suppose you have estimated that the 95 % confidence interval for B₁ is {0.750 , 0.950}. Which of…

A: Given that Suppose you have estimated that the 95 % confidence interval for B₁ is {0.750 , 0.950}.…

Q: Out of 193193 randomly selected adults in the United States who were surveyed, 8181 exercise on a…

A: sample size(n)=193x=81Confidence level=99%sample proportion()=

Q: Suppose we want to estimate the average weight of an adult male in a certain county. A random…

Q: Researchers randomly selected 50 males between the ages of 25 and 44 years to participate in a…

A: The given 95% confidence interval for the proportion of all males between 25 and 44 years old with…

Q: If n = 28, ¯xx¯ = 49, and s = 19, construct a confidence interval at a 90% confidence level. Assume…

A: Given information- Sample size, n = 28 Sample mean, x-bar = 49 Sample standard deviation, s = 19…

Q: What is the value of the point estimate for our 90% confidence interval? Round your answer to three…

Q: Question 1: A newsgroup is interested in constructing a 90% confidence interval for the proportion…

A: 1) Answer:- Given, Sample size, n = 571 Number of successes , x = 420 Confidence level, C = 90% =…

Q: Determine the confidence level. Determine the confidence level for confidence interval shown in the…

A: It is given that α/2 = 0.10

Q: 2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than…

A: For the given data, we need to test at 1% level of significance the hypothesis that the A vesion…

Q: Question 1: If X̅ = 100, ? = 25 ??? ? = 32, construct a 99% confidence interval estimate for the…

A: Answer - X̅ = 100, s = 25, sample size n = 32, 99% confidence interval ⇒ α…

Q: In order to construct a 99% Confidence Interval, we use the following formula: p hat ± ME for 99%…

A: From the provided information, Sample proportion (p̂) = 0.38 Confidence level = 99% Margin of error…

Q: Suppose you have a data set with 33 observations (n=30). What is the t-score for a confidence Level…

A: It is given that n=30 and confidence level is 0.90.

Q: Find the following. z a/2 at the 86% confidence interval

Q: Suppose you want to estimate the weight of infants age 6 - 12 mos. A sample of 50 infants was…

A: Given Sample of 50 infants was obtained and the 95 % confidence interval was found to be…

Q: If n = 28, = 38, and s 17, construct a confidence interval at a 99% confidence level. Assume the…

A: Given information- Sample size, n = 28 Significance level, α = 0.01 Sample mean, x-bar = 38 Sample…

Q: Example 5: Find a 90% confidence interval for the mean difference in the mileage obtained for tires…

A: Given: 50 45 50 50 100 100 100 -10 75 -25 0 25 75 25 50 40 35

Q: A newsgroup is interested in constructing a 90% confidence interval for the proportion of all…

A: From the provided information, Sample size (n) = 533 Out of which 416 were in favor of the…

Q: A random sample of air travelers were surveyed and a 95% confidence interval for the average arrival…

A: Given: 95% Confidence Interval = (98 minutes, 110 minutes) Lower bound = 98 Upper bound = 110…

Q: 2. In a random sample of 150 drivers arrested for DUI (drunk driving), 90% were males. The 99%…

A: According to the given information, we have Total number of drivers arrested for DUI = 150 90% were…

Q: Example 5: Find a 90% confidence interval for the mean difference in the mileage obtained for tires…

A: Given: 50 45 50 50 100 100 100 -10 75 -25 0 25 75 25 50 40 35

Q: Question Z A random sample of 170 people were asked if they traveled more than 2000miles on their…

A: a) i. Sample is random II) No. of successes (respondents) is it and number of failures is (170 - 17)…

Q: In a random sample of 1771 Americans aged 12 to 19, 19.5% had some hearing loss. The standard error…

A: From the provided information, Confidence level = 99%

Q: For a sample of size 120, x= 3486. Suppose we know that σ = 650. The 58.2% confidence interval is (

Q: n a random sample of 1500 BA majors who are graduating from the University of Cape Town this autumn…

A: Let X be the observe value 1380 n be the sample size n=1500

Q: QUESTION 2 In which of the following situations we can not construct a confidence interval for the…

A: The condition for constructing the confidence interval for population proportion P using Normal…

Q: A sample was drawn from a known population of 400. A 95% confidence interval showed an 80% decrease…

A: Given A sample was drawn from a known population of 400 95% confidence interval showed an 80%…

Q: For the confidence interval (24,44), the point estimate is and the margin of error is

Q: You are watching a nightly news broadcast on CNN and the reporter says that a 99% confidence…

Q: Find the following. Enter your answer rounded to at least two decimals. Z/2 for the 88% confidence…

A: GIVEN DATA,WE HAVE TO FIND OUT THE VALUE OF OF Z CRITICAL VALUE FOR GIVEN DATA HERE CONFIDENCE…

Q: Which of the following would result in the widest confidence interval? A sample size of 100 with…

A: Which of the following would result in the widest confidence interval? A sample size of 100 with…

Q: Which of the following changes we would expect to result in a reduced interval width (select the…

A: We have given that The 90% confidence interval is (1000, 2100).

Q: 2. Find the lower confidence limit and the upper confidence limit for the population variance for…

A: 100(1-α)% CI for σ2 is(n-1)S2χ21-α/2,n-1≤σ2≤(n-1)S2χ2α/2,n-1

Q: Example 11.6 Suppose that a simple random sample of 400 families shows that 320 families own a…

Q: Question 5 If n=27, ¯x¯(x-bar)=30, and s=16, construct a confidence interval at a 99% confidence…

A: According to the given information, we have Sample standard deviation = 16 Sample size = 27 Sample…

Q: A car insurance company wanted information about the age of its customers. A researcher computed…

A: given data there are 4 confidence intervals (36.30,39.70) (36.70,39.30) (36.56,39.44) (36.91,39.09)…

Q: Question 8: After calculating a 98% confidence interval for the difference in populations means of…

A: Solution :- Given :- The difference in populations means of the weights of men and women in a…

Q: À 90% confidence interval for p is given as (0.26,0.54). H

A: Given, a 90% confidence interval for p is given as (0.26, 0.54).

Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Suppose we take a random sample, N = 64, from the Texas population of adults and find that the average number of years in school for
this sample is 14, with a SD of 4. What is the approximate 95% confidence interval around that average?
%3D
From 6 to 22
From 10 to 18
From 13.5 to 14.5
From 13 to 15

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

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

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

Question # 11: Using the data in question 9 (I just resubmitted to Bartleby), calculate the 95% confidence interval for the mean ACT score based on the t-distribution. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14,12, 26, 17, 18 Choose the following: A. 18.07 to 23.63 B. -∞ to 23.15 C. 18.22 to 23.48 D. -∞ to 23.05
Suppose that a random sample of 11 scores from a population of test scores is to be used to estimate the population mean and standard deviation. If a 95% confidence interval for the mean is constructed , it contains values that are within _____ standard deviations of its mean.
Question 3: which sample size of students would have a confidence interval with a smaller width?
Example 5: Find a 90% confidence interval for the mean difference in the mileage obtained for tires with the new material and tires with the old material. Following are the paired differences (new minus old) for each of the 17 riders, chosen at random, who took part in the experiment: 50, 45, 50, 50, 100, 100, 100, -10, 75, -25, 0, 25, 75, 25, 50, 40, 35
Example 5: Find a 90% confidence interval for the mean difference in the mileage obtained for tires with the new material and tires with the old material. Following are the paired differences (new minus old) for each of the 17 riders, chosen at random, who took part in the experiment: 50, 45, 50, 50, 100, 100, 100, -10, 75, -25, 0, 25, 75, 25, 50, 40, 35
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
Based upon the results of the sample in #1, can you say with 95% confidence that your confidence interval contains the true percentage of all adult females registered to vote?
Suppose we randomly select n=2000 Douglas College students and we find that 205 of these students are left-handed. What is the 95% confidence interval for p= the proportion of left-handed students at Douglas? Fill in the blanks (round to three decimal places): We are 95% confident that p is between and .
Example 5: Find a 90% confidence interval for the mean difference in the mileage obtained for tires with the new material and tires with the old material. Following are the paired differences (new minus old) for each of the 17 riders, chosen at random, who took part in the experiment: 50, 45, 50, 50, 100, 100, 100, -10, 75, -25, 0, 25, 75, 25, 50, 40, 35
QUESTION 28 A car insurance company wanted information about the age of its customers. A researcher computed 90%, 95%, 97%, and 99% confidence intervals for the population mean age of the customers. Which of the following intervals is the the 95% confidence interval for the population mean age? (36.30, 39.70) (36.70, 39.30) (36.56, 39.44) (36.91, 39.09)
Question 2: On a particular day, Mobay electronics produced 1000 electric bulbs at a mean production rate of 10 hours. Assume that the known population standard deviation is 2000 hours a. Why do we need a confidence interval? b. Construct a 95% confidence interval for the mean production time of the light bulbs of mobay electronics.