Document2InsertDesignLayoutReferencesMailingsReviewViewTimes New R... -12A-AaBbCcDdEeAaBbCcDdEe AaBbCcD AaBbCcDdE AaBb AabbCcDdEAaBbCcDdEeX,NormalNo SpacingHeading 1Heading 2TitleSubtitleSubtle EmpMAT-152 Confidence IntervalsZ-Distribution Intervals1. State at least two methods you may use to determine if sampling distributions may be considerednormally distributed:a.b.Intorior parties She wants to estimate the average

1. a. Z interval for mean: If the population standard deviation is known and sample size is greater…

Answered: Z-Distribution Intervals 1. State at…

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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Two-sample t-test I need to perform a two-sample t-test analysis to determine if mean absenteeism is different between organizations which have a good Union management and those that do not. Can you please explain the steps to get this in excel? Data: Wage Pct PT Pct U Av Shift U/M Rel Absent 22477 8.5 57.1 1 1 5.4 29939 1.9 41.5 0 1 4.1 22957 12.2 52.6 1 0 11.5 18888 30.8 65.1 0 1 2.1 15078 6.8 68.8 0 1 5.9 15481 5.1 46.4 0 0 12.9 21481 25.3 38.9 0 1 3.5 29687 9.2 17.2 0 0 2.6 13603 8.4 12.9 0 0 8.6 18303 4.9 18.1 0 1 2.7 20832 23.8 64.4 1 1 6.6 22325 24.1 63.7 1 1 2.1 19964 8.6 12.2 0 1 3.8 32496 5.9 11.8 1 0 4.3 15795 2.9 25.8 0 1 4.3 21138 24.3 53.2 0 0 2.2 18859 20.6 22.8 1 1 8.6 12023 9 49.8 1 1 10.8 33272 24 39.1 1 0 2.9 22325 11.9 32.6 1 0 5.3 26147 0 67.7 1 0 8.2 33229 11.7 10.8 0 0 2.8 37970 14.6 25.5 1 1 2.4 15281 27.2 31.8 0 0 2.8 19423 17.2 35 1 1 5 26587 13.9 41.9 1 1 9.5 22963 2.6 52.9 0 1 4.3 26404 6.4 64.4 0 1…
Distribution of sample means c and d
Sample data for the arrival delay times (in minutes) of airline flights is given below. Determine whether they appear to be from a population with a normal distribution. Assume that this requirement is loose in the sense that the population distribution need not be exactly normal, but it must be a distribution that is roughly bell-shaped. Arrival delay times (minutes) 28 -24 -9 0 104 -22 -37 -5 34 -26 -10 110 -20 42 -40 0 -28 -31 -21 -42 -21 -31 -17 -32 14 35 -5 8 -35 -1 -44 -21 13 -34 -38 -9 1 15 21 -9 Is the requirement of a normal distribution satisfied?
Sampling Distributions: The Gallup Poll has decided to increase the size of its random sample of Canadian voters from about 1500 people to about 4000 people right before an election. The poll is designed to estimate the proportion of Canadian voters who favor a new law banning smoking in public buildings. The effect of this increase is to 1. increase the variability of the estimate. 2. have no effect since the population size is the same. 3. reduce the variability of the estimate. 4. reduce the bias of the estimate. 5. increase the bias of the estimate.
Sampling Distribution: Suppose a very large number of random samples of size 25 are selected from a population with a known mean and standard deviation. If the mean of all the samples is found to be 300 and the standard deviation of these samples is found to be 20, what is the true mean and true standard deviation of the distribution from which the samples are drawn?
entents 1 e Resources Success Success Tools ase Options ssions The pulse rates of 175 randomly selected adult males vary from a low of 36 bpm to a high of 96 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 98% confidence that the sample mean is within 4 bpm of the population mean. Complete parts (a) through (c) below. Type here to a. Find the sample size using the range rule of thumb to estimate o. n= (Round up to the nearest whole number as needed.) b. Assume that o=11.3 bpm, based on the value s=11.3 bpm from the sample of 175 male pulse rates. n= (Round up to the nearest whole number as needed.) c. Compare the results from parts (a) and (b). Which result is likely to be better? The result from part (a) is the result from part (b). The result from $ Copyright © 2022 Pearson Education Inc. All rights reserved. Terms of Use fs % 5 49 S 4- & a hp is likely to be better because + 00 8 Privacy Policy Permissions Contact Us f10…
EQuestion Help A boat capsized and sank in a lake. Based on an assumption of a mean weight of 147 lb, the boat was rated to carry 60 passengers (so the load limit was 8,820 Ib). After the boat sank, the assurmed mean weight for similar boats was changed from 147 lb to 174 lb. Complete parts a andb below. Assume that a similar boat is loaded with 60 passengers, and assume that the weights of people are normally distributed with a mean of 181.5 lb and a standard leviation of 39.9 lb. Find the probability that the boat is overloaded because the 60 passengers have a mean weight greater than 147 lb. he probability is 1.0000 Round to four decimal places as needed.) . The boat was later rated to carry only 14 passengers, and the load limit was changed to 2,436 lb. Find the probability that the boat is overloaded because the mean veight of the passengers is greater than 174 (so that their total weight is greater than the maximum capacity of 2,436 lb). The probability is U Round to four decimal…
For a paired samples t-test there are assumptions about independence for both your levels/categories and your observations. The two levels or categories are ______, whereas the observations are ________. independent, independent dependent, dependent dependent, independent independent, dependent
Population values: 2, 4, 6 μ = Population mean = a = Population standard deviation = (Round to two places after the decimal). Make sure to enter the population standard deviation and not the sample standard deviation.
full answer all random samples thank u
Percent Obese by State Computer output giving descriptive statistics for the percent of the population that is obese for each of the 50 US states, from the USStates dataset, is given in the table shown below. Since all 50 US states are included, this is a population, not a sample. Variable Mean StDev Minimum Q1 Median Q3 Мaximum Obese 50 31.43 3.82 23.0 28.6 30.9 34.4 39.5 Click here for the dataset associated with this question.
Test II. Random Sampling Techniques Directions: Identify the sampling method being used in each scenario. Write your answer on the space provided each number. ( 1. A sample of 2,000 was sought to estimate the average achievement in science of fifth graders in a city's public schools. The average fifth grade enrolment in the city's elementary schools is 100 students. Thus, 20 schools were randomly selected and within each of those schools all fifth graders were tested. 2. A researcher is interested in maximum-security inmates. She groups inmates by the type of crime committed, determines the percentage of the total in each crime category, and uses that percentage to determine the number of inmates randomly selected from each group. 3. A researcher has a population of 100 third grade children from a local school district from which a sample of 25 children is to be selected. Each child's name is put on a lei and each child is assigned a number from 1 to 100. Then the numbers 1 to 100 aro…

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Z-Distribution Intervals 1. State at least two methods you may use to determine if sampling distributions may be considered normally distributed: a.