A consumer group claims that the mean acceleration time from 0 to 60 miles per hour for a sedan is 7.9 seconds. A random sample of 33 sedans has a mean acceleration time from 0 to 60 miles per hour of 7.6 seconds. Assume the population standard deviation is 2.3 seconds. Find the standardized test statistic and the corresponding p-value.
z-test statistic = -0.749, p-value = 0.454
z-test statistic = -0.749, p-value = 0.227
z-test statistic = 0.749, p-value = 0.454
z-test statistic = -0.749, p-value = 0.227
