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MATH 302| STATISTICS| WEEK 2 QUIZ WITH ANSWERS| 2024

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MATH 302| STATISTICS| WEEK 2 QUIZ WITH ANSWERS| 2024 0 / 1 point An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor selects 10 students randomly from each class and the following table shows the final grades of those students. See Attached Excel for Data. final grade The standard deviation of final grades for the online class is 7.832269 7.83 Use the information to respond to the following question:(round to 2 decimal places)

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MATH 302| STATISTICS| WEEK 2 QUIZ
WITH ANSWERS| 2024
point

An instructor wants to compare spread (variation) of final grades of students in her online class and face-to-face class. The instructor
selects 10 students randomly from each class and the following table shows the final grades of those students.

See Attached Excel for Data.

final grade data.xlsx

The standard deviation of final grades for the online class is

7.832269

7.83

Use the information to respond to the following question:(round to 2 decimal places)




xcel.

point

Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as
follows:

See Attached Excel for Data.

movie data.xlsx

Find the approximate sample standard deviation, s

Round to two decimal places.

1.12




Excel.




The lengths (in kilometers) of rivers on the South Island of New Zealand that flow to the Tasman Sea are listed below. Find the
variance.

See Attached Excel for Data.

river length data.xlsx

Question options:

, 1057.58

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