The following table gives the random sample of marks scored by students in two schools,A and B.608581837072School A6372808663639375School B86648281Is the variance of the marks of students in school A is less than that of those in school B?Test at 5% level of significance.

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Answered: The following table gives the random…

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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Suppose that the time in minutes it takes a student to complete an assignment is normally distributed with a mean 50 and variance 100 then the 85th percentile of the average time it takes a random sample of 25 students to complete the assignment is closest to a 48. • b. 52 • C. 40. • d. 60. • e. 71.
The following data show the monthly rental price (in $) for a random sample of one- bedroom apartments in York, Pennsylvania: 600 760 660 755 675 780 755 615 Suppose that the Mean of the monthly rental price or one-bedroom apartment in York, Pennsylvania is 700 (x = 700) Fill in the blank by selecting the correct answer from the drop list box The Median of the monthly rental price for one-bedroom apartment in York, Pennsylvania is • The Variance of the monthly rental price for one-bedroom apartment in York, Pennsylvania is • Noting that the sample standard deviation of monthly rental price for one-bedroom apartment in York, Pennsylvania is 71.21, then by using the Empirical Rule, represents the 95.4% interval for the monthly rental price The coefficient of variation of this data is
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Is memory ability before a meal different compared to after a meal? Twelve people were given memory tests before their meal and then again after their meal. The data is shown below. Before 74 68 82 97 76 81 80 75 88 84 79 91 After 76 68 85 94 79 88 83 72 90 87 79 90 Assume the distribution of the differences is normal. What can be concluded at the 0.05 level of significance? (d = score before - score after) p-Value Interpretation: If the average memory ability is the same before and after a meal and if another twelve randomly selected people are tested, then there is a: _____________percent chance that this new group would either perform at least:____________points better on the test before the meal than on the test after the meal or at least points better on the test after the meal than on the test before the meal. Level of significance interpretation: If the average memory ability is the same before and after a meal and if many groups of twelve people are tested before…
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The following table gives the random sample of marks scored by students in two schools, A and B. School A 60 85 63 72 80 83 70 72 81 School B 86 93 64 82 81 75 86 63 63 Is the variance of the marks of students in school A is less than that of those in school B? Test at 5% level of significance.