The average final exam score for the statistics course is 79%. A professor wants to see if the average finalexam score for students who are given colored pens on the first day of class is different. The final examscores for the 11 randomly selected students who were given the colored pens are shown below. Assumethat the distribution of the gopulation is normal.91, 74, 66, 52, 61, 90, 59, 75, 70, 82, 84What can be concluded at the the a 0.10 level of significance level of significance?a. For this study, we should use t-test for a population meanb. The null and alternative hypotheses would be:H1:c. The test statistic t =(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 s af. Based on this, we should fail to rejectg. Thus, the final conclusion is thatythe null hypothesis.The data suggest the populaton mean is significantly different from 79 at a = 0.10, so there isstatistically significant evidence to conclude that the population mean final exam score forstudents who are given colored pens at the beginning of class is different from 79.OThe data suggest that the population mean final exam score for students who are givencolored pens at the beginning of class is not significantly different from 79 at a = 0.10, sothere is statistically insignificant evidence to conclude that the population mean final examScore for students who are given colored pens at the beginning of class is different from 79.O The data suggest the population mean is not significantly different from 79 at a 0.10, sothere is statistically insignificant evidence to conclude that the population mean final exam

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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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The average final exam score for the statistics course is 76. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The final exam scores for the 11 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 72, 57, 82, 52, 72, 73, 67, 61, 66, 52, 77 The null and alternative hypotheses would be: Hn: ?v Select an answer Ha: ? Select an answer V
American college students have an average of 4.6 credit cards per student. Is the average different for 20-year-olds who are not in college? The data for the 18 randomly selected 20-year-olds who are not in college is shown below: 3, 4, 3, 0, 6, 2, 4, 1, 5, 5, 0, 2, 3 ,4, 2, 7, 4, 0 Assuming that the distribution is normal, what can be concluded at the 0.01 level of significance? H0: = 4.6 Ha: [ Select ] [">", "<", "Not Equal To"] 4.6 Test statistic: [ Select ] ["T", "Z"] p-Value =[ Select ]["0.025", "0.015", "0.035", "0.005"] [ Select ] ["Fail to Reject Ho", "Reject Ho"] Conclusion: There is [ Select ] ["statistically significant", "insufficient"] evidence to make the conclusion that the population mean number of credit cards held by 20-year-olds who are not in college is not equal to 4.6. p-Value Interpretation: If the mean number of credit cards that 20-year-old non-college students have is equal to [ Select ] ["4.1", "3.6",…
Make your own example of mean of a sampling distribution. Also, construct the sampling distribution.
The average final exam score for the statistics course is 74%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is lower. The final exam scores for the 11 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 76, 78, 77, 67, 63, 79, 50, 63, 70, 63, 66 What can be concluded at the the a = 0.01 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Select an answer Hj: ? vSelect an answer v c. The test statistic ? v (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 ? va f. Based on this, we should Select an answer |the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the populaton mean is significantly lower than 74 at a = 0.01, so…
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Mensa requies a test score to be in the top 2%. The test has a mean of 100 and Std. Dev. of 15.and scores are normally distributed. If 4 subjects take the test and they have a mean of 132 but the individual scores are lost, can we conclude that all 4 of them are eligible for Mensa?
The 20 scores below were recorded from a math test: 75, 64, 82, 68, 75, 73, 68, 78, 80, 97, 85, 68, 62, 52, 77, 85, 90, 83, 68, 82 Part A) Use the 20 math scores to neatly contruct a frequency distribution. Use 3 columns, one for class limits, one for frequency, and one for relative frequency (Please use percent only). Use 5 classes of teh same width starting with 50-59.
True or False: A professor computed the sample average exam score of 20 students and used it to estimate the average exam score of the 1,500 students taking the exam was an example of inferential statistics. Select one: True False
The average final exam score for the statistics course is 74%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is lower. The final exam scores for the 12 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 51, 86, 77, 86, 66, 59, 66, 76, 55, 59, 57, 80 What can be concluded at the α = 0.10 level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion H0:H0: ? μ p Select an answer = ≠ > < H1:H1: ? p μ Select an answer = > < ≠ The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)
Do all the cards look correct? And the one that says " the spread of the data (range) is 20" which group does that one belong to?
In my survey I asked how many people they have dated in their lives and I gave them a choice of 0, 1, 2,3, 4, 5, 6, 7, 8, 9, 10 or more. WVhat kind of distribution will I have?
If the grades of students in Principles of statistics are distributed through the N ( 60 , 100 ) , then the percentage of students with grades between 65 and 70

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