Suppose the distribution for a random sample of 200 air passengers traveling by OmanAir pay an average of 300 Oman Rials with at least 150 of the passengers paying between 200 and 400 Oman Rials for their return air tickets. Calculate the standard deviation for the return air ticket? The standard deviation for the return air O a. ticket is 2500 Oman Rials O b. The standard deviation for the return air ticket is 50 Oman Rials О с The standard deviation for the return air ticket is 2 Oman Rials O d. The standard deviation for the return air ticket is 25 Oman Rials

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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Suppose the distribution for a random sample of
200 air passengers traveling by OmanAir pay an
average of 300 Oman Rials with at least 150 of
the passengers paying between 200 and 400
Oman Rials for their return air tickets. Calculate
the standard deviation for the return air ticket?
O a. The standard deviation for the return air
ticket is 2500 Oman Rials
O b. The standard deviation for the return air
ticket is 50 Oman Rials
O c. The standard deviation for the return air
ticket is 2 Oman Rials
d. The standard deviation for the return air
ticket is 25 Oman Rials
Transcribed Image Text:Suppose the distribution for a random sample of 200 air passengers traveling by OmanAir pay an average of 300 Oman Rials with at least 150 of the passengers paying between 200 and 400 Oman Rials for their return air tickets. Calculate the standard deviation for the return air ticket? O a. The standard deviation for the return air ticket is 2500 Oman Rials O b. The standard deviation for the return air ticket is 50 Oman Rials O c. The standard deviation for the return air ticket is 2 Oman Rials d. The standard deviation for the return air ticket is 25 Oman Rials
A final year student is interested to study
students' performance in the statistical methods
course. She collects data for a certain semester
and using the R program constructs the bar plot
as shown. Suppose the grading scheme is such
that a minimum percentage score of 90 is A, 80
is B, 70 is C and 60 is D, respectively. Calculate
the estimated average score in this course. Give
your answer to 2 decimal places.
14
8
4
2.
A B c D
Grade
Select one:
O a. The average score is 93.15
O b. The average score is 50.00
O c. The average score is 54.60
O d. The average score is 78.13
Number of Students
4 6 8 10
14
Transcribed Image Text:A final year student is interested to study students' performance in the statistical methods course. She collects data for a certain semester and using the R program constructs the bar plot as shown. Suppose the grading scheme is such that a minimum percentage score of 90 is A, 80 is B, 70 is C and 60 is D, respectively. Calculate the estimated average score in this course. Give your answer to 2 decimal places. 14 8 4 2. A B c D Grade Select one: O a. The average score is 93.15 O b. The average score is 50.00 O c. The average score is 54.60 O d. The average score is 78.13 Number of Students 4 6 8 10 14
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