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Assume that 40% of students at SCC receive A or B’s, 35% receive C’s, and 25% receive  D or F’s. A survey of 300 r/s UC Davis students indicates that 100 of them received A or  B’s, 130 received C’s, and 70 received D or F’s. Do these results provide strong evidence  that the overall percentages of the 3 grade categories at UC Davis are not all the same as  the ones at SCC? Perform a hypothesis test and use a p-value to draw and explain your  conclusion. (a) Use an appropriate formula to calculate the expected counts. (b) Use an appropriate formula to calculate the test statistic. (c)Use an appropriate table to estimate the p-value. Do not draw any conclusion

Assume that 40% of students at SCC receive A or B’s, 35% receive C’s, and 25% receive  D or F’s. A survey of 300 r/s UC Davis students indicates that 100 of them received A or  B’s, 130 received C’s, and 70 received D or F’s. Do these results provide strong evidence  that the overall percentages of the 3 grade categories at UC Davis are not all the same as  the ones at SCC? Perform a hypothesis test and use a p-value to draw and explain your  conclusion. (a) Use an appropriate formula to calculate the expected counts. (b) Use an appropriate formula to calculate the test statistic. (c)Use an appropriate table to estimate the p-value. Do not draw any conclusion

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Assume that 40% of students at SCC receive A or B’s, 35% receive C’s, and 25% receive 
D or F’s. A survey of 300 r/s UC Davis students indicates that 100 of them received A or 
B’s, 130 received C’s, and 70 received D or F’s. Do these results provide strong evidence 
that the overall percentages of the 3 grade categories at UC Davis are not all the same as 
the ones at SCC? Perform a hypothesis test and use a p-value to draw and explain your 
conclusion.
(a) Use an appropriate formula to calculate the expected counts.
(b) Use an appropriate formula to calculate the test statistic.
(c)Use an appropriate table to estimate the p-value. Do not draw any conclusion

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