Answer:
x= -7
Step-by-step explanation:
Answer:
0.86
Step-by-step explanation:
The z-score we need to make the comparison is given by
where
= the standard deviation established in the study
n = the sample size
and for the Normal distribution N(0,1) we want to find
<em>P(X > -1.0801)
</em>
By using a spreadsheet or the table attached, we find that
P(X > -1.0801) = 0.86
(See picture attached)
If the population mean
is 23.5 grams with a <span>standard deviation of
3.4 grams, then the margin of error of the sample mean is </span><span>0.097 grams. The correct answer between all the
choices given is the first choice or letter A. I am hoping that this answer has
satisfied your query about this specific question.</span>
<span> </span>
120/2 = x/5....120 miles to 2 hrs = x miles to 5 hrs
cross multiply
(2)(x) = (120)(5)
2x = 600
x = 600/2
x = 300....the motorcyclist would travel 300 miles in 5 hrs
or u could do it this way..
120/2 = 60 miles per hr
60 * 5 = 300 miles
1) Multiply both sides by x²

2) Divide both sides by 25

3) Square root both sides

Viola!