In a random sample of eight people, the mean driving distance to work was 21.7 miles and the standard deviation was 7.4 miles. Assume the population is normally distributedand use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean p. Interpret the results.臺臺Identify the margin of error.(Round to one decimal place as needed.)entsLibrary2:20 PM58°Fpe here to seatch12/1/2021ENOS21 ALUX10/05/17PrtScInsertDeleteCF5F8F9F10F11F12F6F7F3&BackspaceNumLockC34.56878.ERT.YU1HomeGHJKLEnter+ IIP近LF.LLI

Given that : Sample size (n) = 8 Sample mean = Standard deviation (s) = 7.4 Confidence interval is…

Answered: In a random sample of eight people, the…

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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The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?
Psychology students in the Izmir University of Economics completed the Dental Anxiety Scale questionnaire in 2020. In this study, scores on the scale range from 0 (no anxiety) to 20 (extreme anxiety). The mean score was 14 and the standard deviation was 3.5. Assume that the distribution of all scores on the Dental Aroxiety Scale is normal with u= 14 and g=35. Complete parts a through c A Click here to view a table of areas under the standardized normal curve O Table of Normal Curve Areas a. Suppose you score a 18 on the Dental Anxiety Scale. Find the z-value for this score. z= (Round to the nearest hundredth as needed ) b. Find the probability that someone scores between 13 and 18 on the Dental Anxiety Scale P(13sxs 18) =D (Round to four decimal places as needed) c. Find the probability that someone scores above 17 on the Dental Anxiety Scale P(x> 17)=(Round to four decimal places as needed.) Enter your answer in each of the answer boxes. |8 目國 100 |8 案 |8 業可 0 | 会效到商同我目 |
Solve the following problem without using excelThat is, solve step by stepCalculate the mean median mode and standard deviation of the data 21,30, 27, 30, 25
answer letter a,b, and c
From the population of 540, a sample of 60 induvidual is taken from this sample. Tge mean is found to be 6.2 and the standerd deviation is 1.368. Find the estimated standerd error of the mean. Construct a 96%confidence intervels for the mean
Please answer within 30min thanks.
Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.10 to test for a difference between the weights of discarded paper (in pounds) and weights of discarded plastic (in pounds). Click the icon to view the data In this example, Hg is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the weight of discarded paper minus the weight of discarded plastic for a household. What are the null and alternative hypotheses for the hypothesis test? O A. H9: Ha =0 H1: Ha 0
The mean weight of the eight-month-old baby is 17.75 pounds with standard deviation 1.225 pounds. The mean weights are approximately normal. Use Empirical Rule to summarize the data. Can we apply Empirical Rule to summarize the data in this problem? Ans: Then answer the following questions: Approximately ___ % of the eight-month-old babies weigh between and pounds. Approximately ___ % of the eight-month-old babies weigh between 15.3 and pounds. Approximately 99.7% of the eight-month-old babies weigh between and pounds.
3.3
Just do 2 and 3 please.
for a population with a standard deviation of 4.2 and mean of 32.5, draw a bell shaped curve, marking location of the mean and the numbers that correspond with all the standard deviations Type your answer here:
The goal of the one-sample t-test is to: Group of answer choices describe the location of a score within a distribution compare the mean of a sample to the population mean. compare the means of two samples. compare the standard deviation of a sample to the standard deviation of the population.

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