Answer: [tex]\dfrac{23}{35}[/tex]
Step-by-step explanation:
Given : A certain stretch of West Street, I claim that most cars are going more than 5 miles per hour (mph) over the speed limit.
The speed limit is posted at 25 mph.
In a random sample of 70 cars, 46 of them were traveling faster than 30 mph (25+5).
Number of cars going more than 5 mph over the speed limit=46
Then, the sample proportion of cars going more than 5 mph over the speed limit will be :_
[tex]\dfrac{\text{Number of cars going more than 5 mph over the speed limit}}{\text{Sample size}}\\\\=\dfrac{46}{70}=\dfrac{23}{35}[/tex]
Hence, the sample proportion of cars going more than 5 mph over the speed limit = [tex]\dfrac{23}{35}[/tex]