The McLean family could drive 220 miles in four hours.
Answer:
3x×2c+1
Step-by-step explanation:
6x+15 =4c-12
To solve for the margin of error:
margin of error = critical value x standard error
To compute for the critical value:
1. compute alpha: α= 1 - (confidence level/100) = 1 - .99 = 0.01
2. Find the critical probability: p = 1 - α/2 = 1 - (0.01/2) = 0.995
3. Look for the z score at the z table, in this case it is 2.58. This is your critical value.
To compute for the standard error, the formula is:
standard error = standard deviation (σ) divided by √n = 1.6 / √420 = 0.0781
Now plug in the following in the formula:
margin of error: 2.58 * 0.0781 = 0.2014 or 0.20
The answer is letter C.
Answer:
412
Step-by-step explanation:
Substitute 50 for <em>n</em>:
Simplify:
Answer:
umm km / nk
Step-by-step explanation:
I DONT know if this is right...…can u plz mark me brainiest? I really need it!!!!
