A research group wishes to determine the number of families not eating three times a day in Metro Manila. The group used a sample for their survey and found out that during the period of study, 4 out of 10 families are not eating three times a day. Anwer the questions: What field of statistics is being illustrated in the study? The population for the study is?

A research group wishes to determine the number of families not eating three times a day in Metro Manila. The group used a sample for their survey and found out that during the period of study, 4 out of 10 families are not eating three times a day. Anwer the questions: What field of statistics is being illustrated in the study? The population for the study 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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CHAPTER 16 CLASSWORK 1. Find the mean for the following lists of numbers. (Round to the nearest tenth) a. Algebra quiz scores: 32, 26, 30, 19, 51, 46, 38, 39 b. Average number of defects per school: 10.6, 12.5, 11.7, 9.6, 10.3, 9.6, 10.9, 6.4, 2.3, 4.1 2. Find the mode or modes for each of the following lists of numbers a. Number of students graduating with honors: 85, 69, 72, 69, 103, 81, 98. b. Number of fifth grade students: 32, 38, 32, 36, 38, 34, 35, 30, 39 3. Find the median of following numbers. (Round to the nearest hundredth) a. 35, 33, 32, 34, 35, 34, 35, 35, 34 b. 35, 33, 34, 35, 34, 35, 35, 34
2. What is the difference between a histogram and a bar chart? For what type of data would each be appropriate.
For each of the following research situations, identify the level of measurement of all variables. Also, decide which statistical applications are used: descriptive statistics (single variable), descriptive statistics (two or more variables), or inferential statistics. Remember that it is quite common for a given situation to require more than one type of application. The administration of your university is proposing a change in parking policy. You select a random sample of students and ask each one if he or she favors or opposes the change. You then use the results to estimate the support for the change in the entire student body. You ask everyone in your social research class for their highest grade in any math course and the grade on a recent statistics test. You compare the two sets of scores to see if there is any relationship. Your aunt is running for mayor and hires you to question a sample of voters about their concerns. Specifically, she wants a profile of voters that will…
A governmental agency computed the proportion of violent crimes in the United States in a particular year falling into each of four olo categories. A simple random sample of 550 violent crimes committed in California during that year were categorized in the same way. The following table presents the results. U.S. California Category Proportion Frequency Murder 0.012 Forcible Rape 0.058 20 Robbery 0.360 207 Aggravated Assault 0.570 318 Send data to Excel Can you conclude that the proportions of crimes in the various categories in California differ from those in the United States as a whole? Use the 0.01 level of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 4 Part 1 of 4 (a) State the null and alternate hypotheses. Save For Later Submit Assignment Check Answer Skip Part O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy (? 5/2 Search insert 山园

Charlie isinterested in whether elementary school students, middle school students, or high school students spend more time reading in the summer. In the beginning of the school year he asks 20 elementary school students, 15 middle school students and 40 high school students to report the number of pages they read over the summer. What statistical test should Charlie use to test his research question?
Topic: Formulating the appropriate null and alternative hypotheses on a population mean and Identifying the appropriate form of the test statistics A driver claims that their average net take-home pay in a day is $250. Mr. Tim wants to prove this claim by surveying 15 drivers of the town. The values obtained are $280, $270, $250, $240, $260, $280, $290, $300, $230, $250, $250, $260, $220, $250 and $260. Is there a reason to believe that the average net take-home pay of a driver in the town is $250.00? Assume that the net weight is normally distributed with unknown population variance. Find the: 1.) Null Hypothesis: ______________ 1.1.) In symbol, Ho: µ = __________ 2.) Alternative Hypothesis: _________ 2.2.) In symbol, Ha: µ = ___________ 3.) Test Statistic to be used: _______
If there are 13 data points in a set of data, what is the number of degrees of freedom?
What’s the relative frequency
A survey was conducted among the engineering students in a university. The survey is conducted to find the relationship between the test preparation time and their test achievement. The 50 respondents were asked 2 questions: a) How much time did you spend to prepare for the exam? and b) What is your test achievement? Based on the above statement, determine the type of statistics that is suitable for the study and briefly explain your answer.
I need help with something regarding this problem. The National Sleep Foundation recommends that adults aged 18 to 64 get an average of 8 hours of sleep per night. A survey of sleep hours was taken during a Statistics class. The data is listed below: 4, 5, 5, 5, 5.5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10 Do we have enough evidence at the 0.05 significance level to say that statistics students tend to get less sleep than the recommended average of 8 hours per night? How would I get the degrees of freedom?
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of cars each of the cars types. The data below displays the frontal crash test performance percentages. Test whether there are statistical differences in the frontal crash test performance for each type of car. Car Sizes Compact Cars Midsize Cars Full-Size Cars 95 95 93 98 98 97 87 98 92 99 89 92 99 94 84 94 88 87 99 93 88 98 99 89 What conclusions can we draw from the follow-up t-tests? There is/are a total of ______ statistically significant difference(s) between car type pairs out of the follow-up t-tests. Options: a) 1 b) 2 c) 3 d) 4 e) 5 f) 6
You may need to use the appropriate technology to answer this question. The Wall Street Journal Corporate Perceptions Study 2011 surveyed readers and asked how each rated the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study. Reputation of Company Quality of Management Excellent Good Fair Excellent 40 25 8 Good 35 35 10 Fair 25 10 12 (a) Use a 0.05 level of significance and test for independence of the quality of management and the reputation of the company. State the null and alternative hypotheses. O H: Quality of management is independent of the reputation of the company. H: Quality of management is not independent of the reputation of the company. O H: Quality of management is independent of the reputation of the H: The proportion of companies…