Answer:
There is no significant evidence to conclude that the mean waiting time is less than 3.8 minutes
Step-by-step explanation:
H0 : μ = 3.8
H1 : μ < 3.8
Test statistic :
(x - μ) ÷ s/sqrt(n)
(3.7 - 3.8) ÷ 0.6/sqrt(60)
Test statistic = - 1.29
The Pvalue from test statistic :
P(z < -1.29) = 0.0985
Reject Null if
Pvalue < α
0.0986 > 0.01 ; Hence, we fail to reject the null ;
There is no significant evidence to conclude that the mean waiting time is less than 3.8 minutes
The perpendicular line will have the x and y coefficients swapped and one of them negated. We can write the desired line as
9(x -6) -3(y -4) = 0
where the coordinates of the point of interest are (6, 4).
Dividing by 3, this is
3(x -6) -(y -4) = 0
3x -y = 14
An equation for the line of interest is ...
3x -y = 14
Answer:
AB= FD
Step-by-step explanation:
I JUST THINK IT
I AM NOT SURE
So the first thing you want to do is see how much quarts are in a gallon. (4.) Then you figure it would need 2 eight packs to get 4 gallons, as there are 8 quarts in each. 2 eight packs would cost 32 dollars verses 24 dollars for a 4 gallon jug (the same amount as 2 eight pack quarts.) So the 4 gallon jug is cheaper.
Answer:
0.25x^2-9
Step-by-step explanation:
Difference of squares converse:
0.25x^2-9