A sample of 300 students of Under-graduate and 300 students of Post-graduate classes of a university were asked to give their opinion towards the autonomous colleges. 190 of the Under-graduate and 210 of the Post-graduate students favoured the autonomous status." Present the above fact in the form of a frequency table and test, at 5% level, that opinions of Under-graduate and Post-graduate students on autonomous status of colleges are independent. (Table value of chi-square at 5% level for 1 d.t. is 3.84)
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- The median number of part-time employees at fast-food restaurants in a particular city wasknown to be 18 last year. City officials think the use of part-time employees may be increasing.A sample of nine fast-food restaurants showed that seven restaurants were employing morethan 18 part-time employees, one restaurant was employing exactly 18 part-time employees,and one restaurant was employing fewer than 18 part-time employees. Can it be concludedthat the median number of part-time employees has increased? Test using a = .05.The median number of part-time employees at fast-food restaurants in a particular city wasknown to be 18 last year. City officials think the use of part-time employees may be increasing. A sample of nine fast-food restaurants showed that seven restaurants were employing more than 18 part-time employees, one restaurant was employing exactly 18 part-time employees, and one restaurant was employing fewer than 18 part-time employees. Can it be concluded that the median number of part-time employees has increased? Test using α = 0.05The manager of Microsoft wants to study the # of hours per week employees spend at their desktop computers by type of industry. The manager randomly selected a sample of 5 executives from each of 3 industries studied. At the 0.05 siginificance level, can she conclude there is a difference in the mean number of hours spent per week by industry? Construction - 12, 10, 10, 12, 10 Energy - 8, 8, 6, 8, 10 Manufacturing - 10, 8, 6, 8, 10 What is the decision rule? (round 2 decimal places) (F 0.05 > ?) Complete the ANOVA Table: Source SS df MS F Treatments Error
- A study was conducted to examine how anxiety (measured on a metric scale) varies for people from different age groups (<18 years, 19 - 29 years, 30 - 39 years, 40+ years). It was hypothesised that people <18 years old would have the least anxiety of the four age groups. It was also hypothesised that people 40+ years old would have more anxiety than people 19-29 years old. Which of the following would be an appropriate statistical test to conduct, which addresses these hypotheses? Group of answer choices: Factorial ANOVA Multiple Regression Mixed ANOVA Single factor ANOVA Within Subjects ANOVAIn New York City on October 23rd, 2014, a doctor who had recently been treating Ebola patients in Guinea went to the hospital with a slight fever and was subsequently diagnosed with Ebola. Soon thereafter, an NBC 4 New York/The Wall Street Journal/Marist Poll found that 82% of New Yorkers favored a mandatory 21-day quarantine for anyone who has come in contact with an Ebola patient''. This poll included responses of 1,042 New York adults between Oct 26th and 28th, 2014.What is the point estimate in this case? What is the sample size? Are the central limit theorem conditions met? Explain. Calculate the standard error for ˆpp^. Construct a 95% confidence interval for pp, the proportion of New York adults who supported a quarantine for anyone who has come into contact with an Ebola patient. With ______ % confidence, the proportion of all New York adults who supported a quarantine for anyone who has come into contact with an Ebola patient is between____ and ____.Statistics Question
- In 2005, there were 1,671 French respondents total, 234 of which who identified as atheist. In 2012, there were 1,688 French respondents total, 485 of which who identified as atheist. "Is there evidence at the 5% significance level that there was an increase in the percent of atheists in France from 2005 to 2012?" *If any conditions are not met, please state so and proceed with the inference.The median number of part-time employees at fast-food restaurants in a particular city was known to be 18 last year. City officials think the use of part-time employees may be increasing. A sample of nine fast-food restaurants showed that seven restaurants were employing more than 18 part-time employees, one restaurant was employing exactly 18 part-time employees, and one restaurant was employing fewer than 18 part-time employees. Can it be concluded that the median number of part-time employees has increased? Test using α = .05.The test is used to test hypotheses associated with enumerated, categorized data. This test is used to determine if there is a significant difference between. and counts.
- The number of incorrect answers on a true-false competency test for a random sample of 15 students were recorded as follows: 2, 1, 4, 0, 1, 2, 6, 0, 3, 3, 5, 3, 1, 4,3 and Find (a) the mean; (b) the median; (c) the mode. Show word count ▼ Next ( PreviousSuppose a group of researchers attempt to confirm the result of "Distractions in Everyday Driving," covered in News Story 5 "Driving while distracted is common, researchers say," by recreating the study. In a random sample or 240male drivers,102indicated they have experienced external distractions while driving. In addition, in a random sample of 270 female drivers, 98 indicated they have experienced external distractions while driving. Test whether the population proportion of male drivers experiencing external distractions while driving was greater than the population proportion of female drivers experiencing external distractions while driving. Use a .05 level of significance. A. What assumptions are required for conducting this test. B. State the null and alternative hypotheses (both mathematical notation and words) C. Calculate the test statistics (by hand) D. Give the P-value associated with the hypothesis test in part (a). E. State the conclusion, using p-value approach.The data "sea_pets_samp" is a simple random sample of 100 cases from the dataset "seattlepets" from OpenIntro.Org. Each case is a registered pet in Seattle, WA between 2003 and 2018. There are 100 pets in the sample, and 29 of them are cats. Question: "With 95% confidence, what percent of registered pets in Seattle, WA between 2003 and 2018 were cats?"