10. An assembly line will be shut down for maintenance if the defect rate exceeds 2.3%. Suppose you adopt a 5% significance level and take a random sample 200 items off the assembly line and compute the proportion that are defective. For what values of the sample proportion will the assembly line be shut down? * 0.06 www. t 0.05 0.04 0.02 Вack Next

10. An assembly line will be shut down for maintenance if the defect rate exceeds 2.3%. Suppose you adopt a 5% significance level and take a random sample 200 items off the assembly line and compute the proportion that are defective. For what values of the sample proportion will the assembly line be shut down? * 0.06 www. t 0.05 0.04 0.02 Вack Next

Name: it y"10. A dbly līne will be shut down for maintenance if the defect
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Description: it y"10. A dbly līne will be shut down for maintenance if the defect rate exceeds 2.3%. Supposeyou adopt a 5% significance level and' takecompute the proportion that are defective. For what values of the sample proportion will theassembly line be sh

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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6. For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.How hard is it to reach a businessperson by phone? Let p be the proportion of calls to businesspeople for which the caller reaches the person being called on the first try. (a) If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 80% sure that the point estimate p̂ will be within a distance of 0.03 from p? (Round your answer up to the nearest whole number.)____phone calls(b) A report states that businesspeople can be reached by a single phone call approximately 22% of the time. Using this (national) estimate for p, answer part (a). (Round your answer up to the nearest whole number.)____phone calls
25. The average amount of time men and women spend practicing meditation in Nepal resort each week is believed to be the same. A study is done and data are collected, resulting in the data in the table below. Each population has a normal distribution. Is there a difference in the mean amount of time men and women practice meditation every week? Test at the 5% level of significance.(populations standard deviations are assumed unegqual). Average Number of Hours Practicing Tmeditation Per week Sample Standard Deviation Sannie Size 0.866 Women Men p-value is p = 0.0054 the df-18.8466 p-value is p =0.05, the dfe 20.8466 O p-value is p= 0.02, the df= 18.8466 p-value is p= 0 001, the df= 12.8466
203 / 234 100% 1. A random sample of Californians has a mean age of 34.4, but you want to know the mean age of all Californians. It like you want to generalize from a a. population; sample; descriptive statistics b. statistic; parameter; sampling error C. central tendency measure; variability measure; random selection d. sample; population; operational definitions to a and therefore you need to worry about 2. Which one sounds like an example of the experimental method? Looking for a relationship between education and income by doing a survey asking about both education and inc Researching whether aggression and violent media consumption are related by asking kids about their violent me consumption and asking their teachers about their aggression Putting people in three different temperature rooms to see if temperature affects productivity a. b. с. d. None of the above 3. What is the value of E(X2 + 2) for the following scores? Scores: 7, 10, 12, 5, 8, 9, 5, 6 a. 624 b. 526 C. 540 d.…
P2. To defend a governmental institution against corruption, its chief officer claims that less than 0.5% of the its 5000 employees accept bribes. An independent human rights team interviewed 200 people from the company and found only 3 people to have accepted bribes. Test the claim of the institution chief officer. Use significance level of 5% and then 1%. Find the P-Value for the test. Assuming that the true mean for the corrupted employees is 10% larger than that obtained by the independent team, and using their own results, determine the number of the employees to be interviewed to detect the true mean, use an allowed error in the test of 5%.
1. in one-way ANOVA, identify the statistic used as a measure of variation among the sample means. as a measure of variation within the samples. to compare the variation among the sample means to the variation within the samples. 2. What is a two-way ANOVA?
9. Summarize the results from an analysis (two-way ANOVA) performed on the data graphed below. Assume big differences are significant and trivial differences are not. Mean y 22.5- 20.0- 17.5 15.0 12.5 10.0
7. In one state, the mean time served in prison by convicted burglars is 18.7 months. A researcher would like to perform a hypothesis test to determine whether the mean amount of time served by convicted burglars in her hometown is different from 18.7 months. She takes a random sample of 11 such cases from court files in her home town and finds that = 21.4 months and s = 7 months. Use a 5% significance level to perform the test. Assume normally distributed population. Perform critical-value (classical) test. Be sure to identify the null and alternate hypotheses and interpret your results. a) Hypotheses: b) Test statistic: c) Critical-value: d) Hypothesis test conclusion and interpretation:
The symbol σˆpσp^ represents the proportion of a sample of size n. True False
23. A TV station claims to its advertisers that the mean number of minutes people view the station is 30. The station conducted a survey of 500 of their viewers who commute. The sample statistics are shown below. 29.11 Sx 20.718 A simulation was run 1,000 times based on the results of the survey. The results of the simulation appear below. 40 samples = 1000 mean = 29.101 SD = 0.934 30- 10 27.0 28.0 29.0 30.0 31.0 32.0 Time Based on the simulation results, is the claim that viewers watch the station for an average of 30 minutes plausible? Explain your response, including an interval containing the middle 95% of the data, rounded to the nearest hundredth. Frequency
Suppose I want to sample the household incomes for EBR parish. Let's say I start with a simple random sample of 100 residents and calculate the sample mean. How would the sampling distribution of change if I increase the sample size to 1,000 residents?
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We have the number of recorded children from 20 randomly selected barangays in the Philippines to help us estimate the number of Filipino children aged 12- 23 months who did not receive any vaccinations appropriate for their age. 16, 22, 26, 31, 45, 18, 24, 26, 34, 46, 19, 24, 27, 35, 55, 19, 25, 28, 37, 58 A. Can we compute for the population standard deviation? B. If yes, what is the population standard deviation? Use the computational formula. If no, why not? C. Can we compute for the sample standard deviation? D. If yes, what is the sample standard deviation? Use the computational formula. If no, why not?