12.There are 48 people quarantined in a hotel waiting for a test because of the COVID-19. They needseparated in a group of 6. Each of them are given a label no. for identification.In selecting the 6 people, the following two sampling methods can be adopted.Method I: Simple Random Sampling: 6 peopleto beare randomly selected with the use of Random Number Table.Method II: Systematic Sampling: starting from Label no. 03, then every kh student isselected.Random Number TableColumn12 3 4 5 7 8910 11 12| 13 14 1516 17 18 | 19 20Row 17 2 19 2|3 4 1 2479.112 2 3 4 16 7 0 0 348.3433 5 1 2 4 92 7 6 45.9.1716.4 7 6 4 1 98 1 1 218.13If Method I is used, the random numbers are drawn by using the above random number(a)table with starting point row 1 column 8.(i)How many digits should be used?(ii)Write down the label no. of the selected students and their floor numberin the following table.Label no.(b) If Method II is used, starting from Label no.3, then every kh student is selected.(i)Determine the best value for k;k =(ii)Write down the label no. of the selected students and their floor numberin the following table.Label no.038.8.2.63.

In Simple random sampling technique, each observation has equal chance of being selected in the…

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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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Three different people take simple random samples of size 400 from a box of 100,000 tickets, each marked 0 or 1, without knowing its contents. The number of 1's in the first sample is 72. In the second, it is 84. In the third, it is 98. Each person estimates the SE by the bootstrap method. Options: 0.081, 0.02, 0.245, 0.18, 0.384, 0.022, 0.43, 0.077, 0.407, 0.21, 0.086, 0.019 The first person estimates the percentage of 1's in the box as, _________ and figures this estimate is likely to be off by give or take _______ The second person estimates the percentage of 1's in the box as, _________ and figures this estimate is likely to be off by give or take ________ The third person estimates the percentage of 1's in the box as, _________ and figures this estimate is likely to be off by give or take __________ Fill in the blanks with the options given
Twenty different statistic students are randomly selected. For each of them,their body temperature (° F) is measured and their head circumference (in) ismeasured. Without doing any research or calculations, estimate the value of r. Forthis sample of paired data, what does r represent?
An online store chooses an SRS of 101 customers from its list of all people who have bought something from the store in the last year. It asks those selected how satisfied they are with the store’s website. If it selected two SRSs of 100 customers at the same time, the two samples would give somewhat different results. Is this variation a source of sampling error or of nonsampling error? Explain why. Would the survey’s announced margin of error take this source of error into account.
Match the name of the sampling method with the description of corresponding situation. Situations ask all the students in your math class pulling 50 names from a hat dividing the population that contains an equal number of men and women by Gender, and choosing 30 people of each gender randomly select four tables in the cafeteria and survey all the people at those four tables choosing every 5th person on a list Sampling Method b. PystematC d. Stratified e. Cluster
To get a sample of 50 students for a student services survey, an assistant principal uses the calculator command "randInt(1,72,5)" to pick five numbers between 1 and 72. He goes to those five pages in the 72-page directory and chooses the ten students pictured on each of those five pages. Will this sampling strategy result in a random sample from the population under consideration?
A nutritionist in the FDA wants to compare the caloric content of medium French fries sold by Wendonald (Population 1) and McKing (Population 2) fast-food chains, to see if there is any difference between them. To test this, random samples from each chain is taken and the caloric contents of French fries are measured. The finding is summarized in the table on next page. Conduct an independent-samples t test to test whether there is any difference between the caloric content of French fries sold by the two chains, following the steps below. Wendonald McKing = 32 = 30 = 390 calories = 365 calories = 30 calories = 38 calories Write down the null and alternative hypotheses using proper notation Calculate (Write all steps) What is the value of for α = 0.05 with a two-tailed test?
Answer 4 & 5 only, provide the sampling technique, justification and the supporting rrl for the case
Q1. Highlight the target population, identify the sampling technique used, and calculate the sample size for the cases listed below. Students may use Krejcie and Morgan (1979) table where required. John worked in a FMCG with 2000 employees. He calculated a sampling fraction of 1/5. Using the employee list available with HR department, he assigned each employee a unique number. John selected first employee at random from the early 5 in that list and continued to select every fifth employee onwards. Talha needed to ensure that the total of 900 staff from all the three departments of a university was represented correctly in his research. His sampling frame…
1.) Suppose 5% of students are veterans and 143 students are involved in sports. How unusual would it be to have no more than 12 veterans involved in sports? (12 veterans is about 8.3916%)When working with samples of size 143, what is the mean of the sampling distribution for the proportion of veterans? When working with samples of size 143, what is the standard error of the sampling distribution for the proportion of veterans? Compute P(ˆp≤p^≤ 0.083916).P(ˆp≤p^≤ 0.083916) = NOTE: Give results accurate to 5 decimal places 2.)Suppose 15% of students are veterans and 138 students are involved in sports. How unusual would it be to have no more than 14 veterans involved in sports? (14 veterans is about 10.1449%)When working with samples of size 138, what is the mean of the sampling distribution for the proportion of veterans? When working with samples of size 138, what is the standard error of the sampling distribution for the proportion of veterans? Compute P(ˆp≤p^≤ 0.101449).P(ˆp≤p^≤…
Draw all possible samples of size 2 without replacement from the population 2, 3, 4, 5, 6 and 7. Find the mean from the sampling distribution of sample means and verify with population mean.
Suppose that a product is shipped in lots of size N = 5000. The receiving inspection procedure used is single sampling with n = 50 and c = 1 & n = 50 and c = 2. Draw the OC curves for the plan and say which one is appropriate (c=1 or c=2 as n is constant)?

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