To solve this
problem, we will have to make use of the z statistic. The formula for the z
score is given as:
z = (x – u) / s
where,
x is the sample value = more than $10.00
u is the sample mean = $8.22
s is the standard deviation = $1.10
Substituting the values into the equation to solve for z:
<span>z = (10 – 8.22) /
1.10</span>
z = 1.78 / 1.10
z = 1.62
We then look for the p value using the standard
distribution tables at the specified z score value = 1.62. Since this is a
right tailed test, therefore the p value is:
p = 0.0526
or
p = 5.26%
<span>Therefore there is a 5.26% probability that a household
spent more than $10.00</span>
7.4 converted to a mixed number is 7 2/5. So yes, they are equal.
Answer:
B Translating 10 units down
Step-by-step explanation:
The only difference between the two functions is the value of D in the first one it is 5 and in the second it is -5 the difference between the two values is 10 so you would be moving down 10 units.
Answer:
Area = 2500 square feet is the largest area enclosed
Step-by-step explanation:
A rectangular piece of land borders a wall. The land is to be enclosed and to be into divided 3 equal plots with 200 feet of fencing
Let x be the length of each box and y be the width of the box
Perimeter of the box= 3(length ) + 4(width)
solve for y
divide both sides by 4
Area of the rectangle = length times width
Now take derivative
Set it =0 and solve for x
multiply both sides by 2/9
For any value of x, second derivative is negative
So maximum at x= 100/3
, replace the value of x
Area = 2500 square feet is the largest area enclosed