A social scientist is comparing sample data regarding the number of cars owned per household in a given city. Theknown average car owned per household is 1.35. What is the best statistical test to conduct?2 x 2 Between Subjects ANOVAO independent groups t testO one sample z testO one sample t test

The sample data about the no. of owned cars per household in the city is compared by the social…

Answered: A social scientist is comparing sample…

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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Do male and female college students have the same distribution of living arrangements? Use a level of significance of 0.05. Suppose that 87 randomly selected male college students and 95 randomly selected female college students were asked about their living arrangements: dormitory, apartment, or other. The results are shown below in the table: Do male and female college students have the same distribution of living arrangements? Dormitory Apartment Other Male 37 45 5 Female 38 37 20 What is the chi-square test-statistic for this data?χ2= Report all answers accurate to three decimal places.
Listed below are ages of actresses and actors at the time that they won an award for the categories of Best Actress and Best Actor. Use the sample data to test for a difference between the ages of actresses and actors when they win the award. Use a 0.10 significance level. Assume that the paired sample data is a simple random sample and that the differences have a distribution that is approximately normal. Actress's 15 28 22 55 25 D age Actor's age 46 49 62 54 40 In this example, Ha is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the actress's age minus the actor's age. Identify the test statistic. (Round to two decimal places as needed.) t = Identify the P-value. P-value = (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? V than the significance level, V sufficient evidence to Since the P-value is the null hypothesis. There support the claim that there is a…
a. An investigator decided to conduct a research to describe the average number of females in each family. Considering the case of families in the town. Describe what may contribute to the difference between the value of the sample statistics and its corresponding population parameter.b. How would the investigator control the above-mentioned phenomenon? PLEASE ANSWER THE b part only if possible
To assess the quality of recent research, which of the following question can be asked? * Does this study cost money? Does this study support my personal opinions? Does this study cost time? Does this study use an appropriate sample?
The average house has 11 paintings on its walls. Is the mean larger for houses owned by teachers? The data show the results of a survey of 14 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal. 12, 13, 12, 12, 12, 11, 13, 12, 13, 11, 10, 12, 11, 13 What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: Select an answer H1: Select an answer c. The test statistic ? ▼ (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is (? v f. Based on this, we should | Select an answer the null hypothesis. g. Thus, the final conclusion is that ... The data suggest the population mean is not significantly more than 11 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of paintings that are in teachers' houses…
Is sex associated with vision correction? She selects a random sample and records their sex and what type of vision correction they use. Contacts Glasses None Total 69 42 135 63 105 280 Female Male 21 Total 45 130 Could this same data be analyzed using a two sample proportion Z test? State YES or NO. Also explain why or why not.
Shark scientists are interested in whether the magnitude of hammer-head shark migration is related to the temperature of the local coastal area. They divided the coast into 8 parts based on topography, and then they measured each part's temperature level during the shark migration and the number of sharks that migrated. Which type of statistical test should they use to analyze their data? O Independent samples t test Single Sample t-test Paired samples t test Pearson's r correlation O Z test One-way ANOVA Simple linear regression
Refer to the data set in the accompanying table. Assume that the paired sample data is a simple random sample and the differences have a distribution that is approximately normal. Use a significance level of 0.10 to test for a difference between the weights of discarded paper (in pounds) and weights of discarded plastic (in pounds). Household;Paper;Plastic1;16.08;14.362;8.72;9.203;6.98;2.654;13.31;19.705;6.38;8.826;8.82;11.897;12.32;11.178;2.80;5.929;9.41;3.3610;6.05;2.7311;9.83;6.2612;12.73;14.8313;15.09;9.1114;9.45;3.0215;11.08;12.4716;9.55;9.2017;9.19;3.7418;6.96;7.6019;6.44;8.4020;6.33;3.8621;5.86;3.9122;14.33;6.4323;6.16;5.8824;7.98;6.0925;17.65;11.2626;13.05;12.3127;16.39;9.7028;3.27;0.6329;6.67;6.0930;7.57;5.92
Give an example of a study for which the one sample z-test would the appropriate test statistic to use.
Consider the following data: 2, 10, 14, 12, 4, 4, 10 Step 1 of 3: Calculate the value of the sample variance. Round your answer to one decimal place.
c. The test-statistic for this data = (Please show your answer to three decimal places.) d. The p-value for this sample (Please show your answer to four decimal places.)
calculate the mean and ss for each of the following sample numbers 1,3,4,0

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