The required sample size is. (Round up to the nearest integer.)Could the sample be obtained from one movie at one theater?OA. The sample should be obtained from one movie at one theater, because that sample is representative of the population.B. The sample should not be obtained from one movie at one theater, because that sample could be easily biased. Instead, a simple random sample of thebroader population should be obtained.OC. The sample should not be obtained from one movie at one theater, because that sample could be easily biased. Instead, a stratified sample of the broaderpopulation should be obtained.OD. The sample should not be obtained from one movie at one theater, because that sample could be easily biased. Instead, a cluster sample of the broaderpopulation should be obtained. Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 90% confidencethat the sample mean is within 2.5 years of the population mean. Assume that o= 19.7 years, based on a previousreport. Could the sample be obtained from one movie at one theater?

given data margin of error E = 2.5 yearsstandard devistion σ = 19.7 years90% ci, n = ?

Answered: The required sample size is. (Round up…

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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I. The elements of the first population are 3 and 9 and the elements of the second population are 4, 8, and 12. Consider all the possible samples of size 3 that can be drawn with replacement from the first population, and all the possible samples of size 2 that can be drawn with replacement from the second population. Form the sample distribution of sample means and verify the results, respectively.
lecture(12.10b): when we comparing two unrelated sample group we use the --------------------------. When we are comparing two related ,because they are matched we use the........................ and when we are comparing three or more groups we use the....................................
I need help with this parts a and b please
Provide a reasonable description of the sample space for each of the random experiments. There can be more than one acceptable interpretation of each experiment. Describe any assumptions you make.
4.A bank has two different customer lines, A and B. Callers dial a single number with 444. Customer service, callers randomly to one of these two lines It directs. In these lines, there is a difference between the lengths of the customers' conversations after connecting to the operator. It is desired to be determined. Random samples of two lines were selected and the following data were obtained. (?? = the last three digits of your student number. If all the last three digits are zero, choose as a three-digit number) A LİNE B LİNESample Size ?1 = 200 ?2=176Sample Average (seconds) 216 195Sample Standard Deviation 35.10 37.80 a.Using the sample statistics, estimate the difference of the two mainstreams within the 95% confidence interval.b.Hypothesis…
7. A population has = 60 and = 10. Find the z-score corresponding to each of the following sample means: a. A sample of n = 4 with M = 55. b. A sample of n = 25 with M = 64 c. A sample of n = 100 with M = 62
1O to Colnect a lepres 5. Make an inference about your population. You must write one or more sentences, even if you have a biased sample make the inference as if your sample is representative.
5. Inference.Consider the sample of students at the University of Reading in Table 3.Table 3: Hours spent studying per weekStudent ID. Hours spent studyingID1. 1ID2. 2ID3. 3ID4. 5ID5. 4ID6. 5ID7. 7ID8. 7ID9. 12ID10 5ID11. 7ID12 7ID13 15ID14. 0ID15. 3ID16. 4ID17. 4ID18 . 0ID19. 5ID20. 7ID21. 7ID22 . 13ID23. 7ID24. 9 a) Consider the possibility of using this sample to make…
2. In a population it is estimated that 20% have a desired trait of interest for the researcher. The researcher wants to know how many people on average he has to draw from a population to get 2 people with the trait. Use rows 20-24 of the Random Number Table to carry out the simulation. Explain clearly how you set up the problem and report your findings. Answer:
26
A population consists of a batch of 24,683 aspirin tablets, and it includes 1,050 that are defective because they do not meet specifications. A random sample of n = 200 of the tablets is obtained and tested, with the result that 15 of them are defective. a. What is the population proportion, p, of defective aspirin tablets? b. What is the sample proportion, p, of defective tablets? c. How can the discrepancy between the population proportion and the sample proportion be explained? a. The population proportion of defective aspirin tablets is p = (Round to three decimal places as needed.) b. The sample proportion of defective aspirin tablets is p= (Round to three decimal places as needed.) c. Choose the correct answer below. C O A. There will always be a discrepancy between the population proportion and the sample proportion when the sample size is small. O B. Random samples collected with sound sampling methods vary, and the sample proportions differ from the population proportion…
7) Students in a class were divided in two batches of 10. One batch was given a quiz in the morning before their lectures and the same quiz was given to the other batch in the afternoon after their lectures. The quiz scores out of 10 are given below. Morning Batch Afternoon Batch Scores Scores 658.5 7 9 55 2.5 | 10| 10| 4.5 |5.5 9.5 6.5 10 8.5 7 8 Use the run test to determine whether the time of the quiz has an effect on the scores. 3

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