(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

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.