%م السبت 11 أكتوبرA moodle.nct.edu.omIII. Answer the following:1. A survey is conducted to know the preference on soft drinks of 250 consumers. Out ofthese 100 consumers are school children and 150 are college students. A sample of 25 is tobe collected for the study by using stratified sampling method. What is the sampleproportion?2. If we need to select 20 i-phone mobile users from 300 users, what would be the samples ifyou choose in a systematic sampling method? What is the sampling interval and write down

We have to find out the samples selected by stratified and systematic sampling.

Answered: III. Answer the following: 1. A survey…

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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You will be applying what you have learned in this course by gathering data and running a statistical analysis. 1) To study about the relationship between height and the weight, you need to collect a sample of nine (9) people using a systematic sampling method. a. What is the population of people? b.Where and how are you going to collect your sample? c. Does your sample accurately represent your population? Why or why not? d. Collect the sample and record the data. 2) (CLO 1) Construct a confidence interval to estimate the mean height and the mean weight by completing the following: a. Find the sample mean and the sample standard deviation of the height. b. Find the sample mean and the sample standard deviation of the weight. c. Construct and interpret a confidence interval to estimate the mean height. d. Construct and interpret a confidence interval to estimate the mean weight. 3) (CLO 2) Test a claim that the mean height of people you know is not equal to 64 inches using the…
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Please answer the questions carefully to get the correct answers by using the table of flights.
UTAS, Nizwa has received 400 Red Markers, 600 Black Markers and 1000 Blue Markers. The college store keeper wants to check 50 samples using stratified sampling. Which of the following are the correct samples? a. 25 Red Markers, 15 Black Markers, 10 Blue Markers b. 10 Red Markers, 15 Black Markers, 25 Blue Markers c. 15 Red Markers, 15 Black Markers, 20 Blue Markers d. 10 Red Markers, 25 Black Markers, 15 Blue Markers
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 33% of air passengers prefer an aisle seat. n3= (Round up to the nearest integer.)
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)
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