A rescarcher has collected the following data on a group of students, regarding whether theypassed or failed an exam and whether or not they attended tutorials:Student ID beginning with 1:Exam failedNumber of studentsExam passed27Attended tutorials13251Did not attend tutorials120 The researcher wants to establish whether the tutorial attendance is independent of examsuccess, using a chi-square test.(a)State the hypothesis of this test.(b)Calculate the expected frequencies for the data with the assumptions in part (a).(Present your answer in the table form).(c)Perform the chi-square test. State your conclusion at 1% level of significance.

There is always some contention about the value of a parameter or the relationship between…

Answered: The researcher wants to establish…

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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MORE BENEFITS OF EATING ORGANIC Using specific data, we find a significant difference in the proportion of fruit flies surviving after 13 days between those eating organic potatoes and those eating conventional (not organic) potatoes. This exercise asks you to conduct a hypothesis test using additional data. In this case, we are testing where p, and p, represent the proportion of fruit flies alive at the end of the given time frame of those eating organic food and those eating conventional food, respectively. Use a 5 % significance level. Effect of Organic Soybeans After 5 Days After 5 days, the proportion of fruit flies eating organic soybeans still alive is 0.9, while the proportion still alive eating conventional soybeans is 0.83. The standard error for the difference in proportions is 0.023. What is the value of the test statistic? Round your answer to two decimal places. What is the p-value? Round your answer to three decimal places. p-value= i ! What is the conclusion? Ho: Po Pe…

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