The equation would be 260 times 0.52 which equals 135.2
Slope = (10 - 6)/(30 - 10) = 4/20 = 1/5
answer
1/5 is the slope
Answer:
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
- X is the mean breaking distance in the sample (78)
- M is the mean breaking distance (75)
- s is the standard deviation (5.9)
- N is the sample size
Putting the numbers in the formula:
z=
=0.5084 and corresponding p value is:
p=0.28