Answer:
though this is difficult i know you would get it. Anyhow im real tired... will solve later... gl
Please include the following items
Answer:
Lower limit = 0.76
Upper limit = 0.84
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 350
Number of drivers that buckle = 280
Formula:


The standard deviation for sp =

95% Confidence Interval:


Putting the values, we get,

Lower limit = 0.76
Upper limit = 0.84
Answer:
E: all real numbers
Step-by-step explanation:
Answer:
a. (x = 1, y = -1, z = 1)