ASSIMILATION:Identify the sampling technique illustrated in the following.CHOICES: Simple random sampling, Stratified random, Cluster sampling. Systematic random samplingand, Multistage Sampling)1. Every 8th person boarding a plane is searched thoroughly.2. At a university, five math classes are randomly selected out of 15 and all of thestudents from each class are interviewed.3. A researcher randomly selects and interviews thirty male and thirty femaleteachers.flights.4. A researcher for an airline interviews all of the passengers on ten randomly selected5. Based on 5 000 responses from 12 000 survey forms sent to its alumni, a biguniversity estimated that the average monthly salary of its alumni is P25 500.6. A college student interviews everyone in a Mathematics class to determine thepercentage of students that live in a dormitory.7. A market researcher randomly selects 100 drivers under 35 years of age and 50drivers over 35 years of age.8. All of the teachers from 100 randomly selected senior high schools are interviewed.9. To avoid working late, the quality control manager examines the last 20 itemsproduced that day.10.The names of 50 contestants are written on 50 cards. The cards are placed in a bagthen three names are picked from the bag.

As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Answered: 1. Every 8th person boarding a plane is…

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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2. A contractor on the Eastern Corridor road makes a large purchase of industrial cement from Ghacem. Each bag of this industrial cement is supposed to weigh 94 pounds. To see if he is getting his money's worth, the contractor weighs 10 randomly selected bags and gets the following weights (in pounds): 94.1, 93.4, 92.8, 93.4, 95.4, 93.5, 94.0, 93.8, 92.9, 94.2 (a) What are the appropriate null and alternative hypotheses to be tested? (b) State the assumption that is necessary for performing the test. STAT 223 EXERCISE Page 1 of 2 RM-GROUP (c) Calculate the p- value of the test. Perform the test at a significance level of a = 0.1.
6. Construct a stem-and-leaf for the data with a 1-digit stem, leaves do NOT need to be in order. 644, 581, 431, 644, 820, 773, 899, 417, 858
10. For adults, certain type of cancers can be treated with multiple health interventions. To gain information about all Maryland-based treatment centers a survey is sent to a randomly chosen group of 25 Maryland based treatment centers that asks about the recommended interventions for cancer patients based on medical records, insurance, and income. All of the randomly selected treatment centers completed the survey. The sample is: For adults, certain type of cancers can be treated with multiple health interventions. To gain information about all Maryland-based treatment centers a survey is sent to a randomly chosen group of 25 Maryland based treatment centers that asks about the recommended interventions for cancer patients based on medical records, insurance, and income. All of the randomly selected treatment centers completed the survey. The sample is: a. the 25 Maryland-based treatment centers b. the medical records, insurance, and income c. all Maryland-based treatment…
1. Explain the difference between z-tests (which use categorical data), and t-tests (which use numerical data). 2. Conduct a t-test, both when given statistics, and when given data. 3. Conduct a t-test, 2-sample t-test, and paired t-test. 4. Differentiate between the five types of tests we have learned so far.
26. A survey conducted by the Bureau of Labor Statistics found that 67% of high school graduating class of 2007 went on to college the following year, while 44% of the class was working. Furthermore, 92% were either in college or working, or both. a. What percentage went on to college and work at the same time? b. What percentage went on to college but not work? c. What percentage were neither in college nor work?
4. The numbers of incorrect answers on a true-false test for 15 students were recorded as follows: 2, 1, 3, 0, 1, 3, 6, 0, 3, 3, 5, 2, 1, 4, 2. Find the median and the mode.
7. Wondering if there is a connection between a person's height and the number of tattoos they have, Mac asks 50 people how tall they are and how many tattoos they have. What type of study was used? a. Experimental b. Observational
18. A poll was taken of 14,056 working adults aged 40-70 to determine their level of education. The participants were classified by sex and by level of education. The results were as follows. Male Female Total Education Level High School or Less Bachelor's Degree 3141 2434 5575 3619 3761 7380 472 Master's Degree 534 52 43 7346 6710 14,056 1006 95 Ph.D. Total A person is selected at random. Compute the following probabilities: (d) The probability that the selected person is male, given he has a Master's degree (e) The probability that the selected person does not have a Master's degree, given it is a male (f) The probability that the selected person is female, given that she has a Bachelor's degree (g) The probability that the selected person has a Ph.D, given it is a female
4.You wish to gather data from a simple random sample of 15 households in a city that has 180 blocks. How many different samples are possible if each house surveyed is from a different block? Please answer with details on how to do it. Thank you.
18. The governor of New York has banned selling or purchasing "large" soft drinks, where a "large" is defined as being more than 16 oz. Sonic, famous for its Route 44 drinks is interested in estimating the proportion of New Yorkers that favor this ban. From a random survey of 800 New Yorkers, 375 answered no to the question, “Do you favor the governor's ban on 'large' soft drinks?" a. Find a 97.5% confidence interval for the proportion of New Yorkers who favor the ban on "large" soft drinks. b. Interpret the confidence interval. c. Can you conclude with 97.5% confidence that a majority of New Yorkers favor the ban on "large" soft drinks? Why or why not. d. Without doing any other calculations, can you be 99% confident that a majority of New Yorkers favor the ban on “large" soft drinks?
1. A researcher is interested in the texting habits of high schools students in the United States. The researcher selects a group of 200 students, measures the number of text messages that each individual sends each day (for a single week), and calculates the average number for the group. a. Identify the population for the study. b. Identify the sample for this study. c. The average number calculated is an example of what?

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