The following information is given The sample consists of 11

The following information is given: The sample consists of 119 cars driving down Hamburg Turnpike. Their mean speed is 42 miles per hour. - alpha = 0.05 The test statistic has a standard normal distribution (if H_0 is true). If it is possible to determine the critical value(s) based on this information, determine it/them. If it is not possible, explain why it is not possible.

Solution

No, it is not possible to determine the critical value from this information.

This is because to determine the critical value, we also require the standard deviation, which is not provided to us. If the standard deviation is provided, we can determine the value.

Note:

If we assume a standard normal distribution, for alpha = 0.05, Z(critical value)=1.96