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Next 3 questions are related to the following: A random sample of 1200 vehicles on a freeway are clocked to test the hypothesis that the proportion...

Next 3 questions are related to the following:

A random sample of 1200 vehicles on a freeway are clocked to test the hypothesis that the proportion of vehicles driving above 80 miles per hour is 25%. The number of vehicles in the sample driving above 80 mph is 330.

31 What is the sample proportion?

a 0.264

b 0.275

c 0.285

d 0.296

32 The test statistic is,

a 1.78

b 1.86

c 1.92

d 2.00

33 The p-value is,

a 0.0690 Do not reject H₀ at α = 0.05.

b 0.0456 Reject H₀ at α = 0.05.

c 0.0345 Reject H₀ at α = 0.05.

d 0.0228 Reject H₀ at α = 0.05.

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(1) Option (b) is correct. (2)... View the full answer

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