According to state troopers, the mean speed on the Western Virginia Turnpike is 72 miles per hour.Representatives for the local motorist club simply disagree, acknowledging the actual mean spead might be slower or faster; they commission a sample of size 36, and from it is calculated a sample mean of 73.5 miles per hour.According to industry standards, the population standard deviation is acceptably assumed to be 4 miles per hour.Test the claim at a 98% level of confidence.

What is the absolute value of the critical statistic,rounded to the nearest thousandth?

1. 1.960
2. 2.054
3. 1.645
4. 2.326
5. 2.576
6. 2.438

According to state troopers, the mean speed on the Western Virginia Turnpike is 72 miles per hour.Representatives for the local motorist club simply disagree, acknowledging the actual mean spead might be slower or faster; they commission a sample of size 36, and from it is calculated a sample mean of 73.5 miles per hour.According to industry standards, the population standard deviation is acceptably assumed to be 4 miles per hour.Test the claim at a 98% level of confidence.

How does the test statistic compare against the critical value in the corresponding tail of the probability distribution curve?

1. The test statistic is less than or does not exceed the critical value.
2. The test statistic is greater than or exceeds the critical value.
3. The test statistic is equal to the critical value.
4. It cannot be determined at this time if the test statistic is less than, greater than or equal to the critical value.

According to state troopers, the mean speed on the Western Virginia Turnpike is 72 miles per hour.Representatives for the local motorist club simply disagree, acknowledging the actual mean spead might be slower or faster; they commission a sample of size 36, and from it is calculated a sample mean of 73.5 miles per hour.According to industry standards, the population standard deviation is acceptably assumed to be 4 miles per hour.Test the claim at a 98% level of confidence.

What is the p-value,expressed as a percentagerounded to two decimal places without insignificant digits?EX: #.##%

Answer:

According to state troopers, the mean speed on the Western Virginia Turnpike is 72 miles per hour.Representatives for the local motorist club simply disagree, acknowledging the actual mean spead might be slower or faster; they commission a sample of size 36, and from it is calculated a sample mean of 73.5 miles per hour.According to industry standards, the population standard deviation is acceptably assumed to be 4 miles per hour.Test the claim at a 98% level of confidence.

How does the right-tailed p-value compare against the level of significance, alpha, under the probability distribution graph?

1. Thep-valueis less than or does not exceed the level of significance,
   

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