Answer: the first one
Step-by-step explanation:
Answer:
The margin of error is 3.465
Step-by-step explanation:
Margin of error = t × sd/√n
n = 92, degree of freedom = n - 1 = 92 - 1 = 91, t-value corresponding to 91 degrees of freedom and 90% confidence level is 1.6618, sd = 20
Margin of error = 1.6618×20/√92 = 33.236/9.592 = 3.465
Step-by-step explanation:
too long
Answer:
true they walk the same distance
Step-by-step explanation:
8/10 is equal to 0.8
also 12/15 is also 0.8
therefore walking the same distance