YGSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.1) A local company is concerned about the number of days missed by its employees due to illness. A randomsample of 10 employees is selected. The number of days absent in one year is listed below. An incentiveprogram is offered in an attempt to decrease the number of days absent. The number of days absent in one yearafter the incentive program is listed below. Test the claim that the incentive program cuts down on the numberof days missed by employees. Use a = 0.05. Assume that the distribution is normally distributed.EmployeeDays absent before 3incentiveE | F|G| H ||| J9 4 2BDays absent afterincentive2

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Answered: YG SHORT ANSWER. Write the word or…

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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Experiments vs. Observations Your principal stands in the commons each morning and records the number of students she sees with no IDs for two weeks. This is an example of: Select one: O a. controlled experiment O b. survey O c. cluster sample O d. observational study
Household Income and College Plans Exercise 3.93 introduces a survey of a representative sample of 920 US teens (ages 13 to 17). One of the questions asked whether the teen planned to attend a four-year college. The household income of the participants was also recorded, and the results are shown in the table below. Household income Less than $30,000 $30,000 to $75,000 More than $75,000 Total 0.05 4-yr college 88 170 276 534 Not 4-yr college 122 156 108 386 Total 210 326 Test to see whether there is an association between household income and plans for four-year college. (round to three decimal places) 384 920 What is the expected count for the first cell (Less than $30,000, 4-year college)? i 57.28 place) What is the contribution to the chi-square statistic for the first cell? i 2 What is the chi-square statistic? i 0.0000 What is the p-value? i What is the conclusion? (round to three decimal places) We find evidence of an association between household income and college plans. (round…
520 students from UC Berkeley are surveyed about whether they are from Northern California, Southern California, Central California, or from another state or country. A researcher is interested in seeing if the proportion of students from each of the four regions are all the same for all UC Berkeley students. The table below shows the outcome of the survey. Fill in the expected frequencies. Frequencies of UCB Students' Home Towns Outcome Frequency Expected Frequency Northern California Southern California Central California Out of State 189 152 170 1000
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Presidential Inaugural Addresses Ever wonder how many words are in a typical inaugural address? The following data represent the lengths of all the inaugural addresses (measured in word count) for all presidents up to Barack Obama. 1425 1125 1128 5433 2242 2283 3319 2015 3217 135 4467 2308 2906 2821 1172 3967 1337 1883 1668 2406 2217 2480 1807 3634 3838 698 985 559 2978 3318 1355 Source: infoplease.com 1802 1340 1526 2158 4776 1681 4059 996 4388 3801 1087 2446 2130 1507 2463 2449 2170 2546 1729 8445 1571 209 1437 2073 1175
WRITE THE NUMBER ONLY. (no need for explanation)EXAMPLE: 1 Classify the following statements as:1 - Simple Random Sampling2 - Stratified Sampling3 - Systematic Sampling4 - Cluster Sampling 1. In a university of 1,000 students a survey was to be taken to determine how many students are left-handed. It was found out that 8% of the student population are left-handed. 2. A study in the wake of a natural disaster divides a population according to region, then choose a region randomly to begin establishing the disaster's overall effect. 3. A pharmaceutical company wants to test the effectiveness of a new drug. The first group will receive the new drug; the second group will receive a placebo. 4. A study was conducted to determine whether a new schooling program affects the test scores of students. The scores were grouped by family income category. 5. A survey about timekeeping divides the population by time zone, then take 100 random samples per zone. 6. A test tracking physical…
- Attendance and Grades Read the following on attendance and grades, and answer the questions in the discussion board. A study conducted at Manatee Community College revealed that students who attended class 95 to 100% of the time usually received an A in the class. Students who attended class 80 to 90% of the time usually received a B or C in the class. Students who attended class less than 80% of the time usually received a D or an F or eventually withdrew from the class. Based on this information, attendance and grades are related. The more you attend class, the more likely you will receive a higher grade. If you improve your attendance, your grades will probably improve. Many factors affect your grade in a course. One factor that you have considerable control over is attendance. You can increase your opportunities for learning by attending class more often. a. What are the variables under study? b. Are descriptive, inferential, or both types of statistics used? c. What is the…
Multiple Choice Question A study took a random sample of adults and asked them about their bedtime habits. The data showed that people who drank a cup of tea before bedtime were more likely to go to sleep earlier than those who didn't drink tea. What was the population being studied? A. All adults that drink tea before bed B. All Adults C. All People D. All adults that don't drink tea
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A foundation asked each person in a representative sample of high school students and in a representative sample of high school teachers which of the rights guaranteed by the First Amendment they thought was the most important. Suppose that the sample size for each sample was 1,000. Data consistent with summary values from the study are summarized in the accompanying table. Students = Teachers Freedom of Speech 658 400 USE SALT Most Important First Amendment Right Freedom of Religion Freedom to Peacefully Assemble Freedom of the Press 30 55 245 420 20 55 Freedom to Petition the Government 47 70 (a) Carry out a hypothesis test to determine if there is convincing evidence that the proportions falling into the five First Amendment rights categories are not the same for teachers and students. Use a significance level of a = 0.01. Calculate the test statistic. (Round your answer to two decimal places.) x²= Use technology to calculate the P-value. (Round your answer to four decimal places.)…

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