(co 5) an advocacy group claims that the mean braking distance of a certain type of tire is 75 feet when the car is going 40 miles per hour. in a test of 45 of these tires, the braking distance has a mean of 78 and a population standard deviation of 5.9 feet. find the standardized test statistic and the corresponding p-value. group of answer choices

z=0.5084

p=0.2809

Step-by-step explanation:

Since number of tires tested for breaking distance is enough (>30), the standardized test statistic is calculated by the formula:

z= where

Putting the numbers in the formula:

z= =0.5084 and corresponding p value is:

p=0.28

step-by-step explanation:

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2