proportion of motorists who check their cell phones while driving A researcher believes that less than 45% of motorists in his country do not check their cell phone when driving A sample of 300 motorists was taken, of which 120 said that they do not use it when they drive. Can you be sure with 99% confidence that the researcher is right? Choose 1. the correct conclusion 2. the correct interpretation Select one: a) 1. H0 is rejected 2. With 99% confidence it can be ensured that less than 45% of motorists check their phone while driving b) 1. H0 is not rejected 2. With 99% confidence, it can be ensured that it is not true that less than 45% of motorists consult their cell phone while driving. c) 1. H0 is rejected 2. With 99% confidence, it can be ensured that it is not true that less than 45% of motorists consult their cell phone while driving. d) 1. H0 is not rejected 2. With 99% confidence it can be ensured that less than 45% of motorists check their phone while driving
p = proportion of motorists who check their cell phones while driving
A researcher believes that less than 45% of motorists in his country do not check their cell phone when driving
A sample of 300 motorists was taken, of which 120 said that they do not use it when they drive.
Can you be sure with 99% confidence that the researcher is right?
Choose
1. the correct conclusion
2. the correct interpretation
Select one:
a)
1. H0 is rejected
2. With 99% confidence it can be ensured that less than 45% of motorists check their phone while driving
b)
1. H0 is not rejected
2. With 99% confidence, it can be ensured that it is not true that less than 45% of motorists consult their cell phone while driving.
c)
1. H0 is rejected
2. With 99% confidence, it can be ensured that it is not true that less than 45% of motorists consult their cell phone while driving.
d)
1. H0 is not rejected
2. With 99% confidence it can be ensured that less than 45% of motorists check their phone while driving
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