Answer:
The null hypothesis is 
.
The alternate hypothesis is 
Step-by-step explanation:
Null hypothesis:
The previously report, the known value.
Alternate hypothesis:
What is questioned(higher, lower, different,...) of the null hypothesis
Previously, an organization reported that teenagers spent an average of 4.3 hours per week, on average, on the phone.
This means that the null hypothesis is .
The organization thinks that, currently, the mean is higher.
That is, higher than 4.3. So
The alternate hypothesis is
Answer:
Step-by-step explanation:
How many books are there?
6+5+4+3 = 18 books total
How many are adventure books?
3
3 out of 18 books are adventure books
Robero has a 3/18 probability of choosing an adventure book.
Your teacher might want that probability in the lowest possible form. That is because it is the easiest to use and to understand.
You can do this by dividing both numbers by the "numerator" which is the first number in the fraction, (the adventure book count).
3/3 = 1
18/3 = 6
So the fraction can be reduced to 1/6.
Robero has a 1/6 chance of choosing an adventure book.
Answer:
The error in the students work is
y -(-8) + 8 = -6x + 12 + 8
subtracting a negative is adding
y+8
They should subtract 8 from each side instead of adding 8 to each side
Step-by-step explanation:
We can use point slope form since we are given a point and the slope
y-y1 = m( x-x1)
y--8 = -6(x-2)
y+8 = -6(x-2)
Distribute the -6
y+8 = -6x+12
Subtract 8 from each side
y+8-8 = -6x+12-8
y = -6x+4
The error in the students work is
y -(-8) + 8 = -6x + 12 + 8
subtracting a negative is adding
y+8
They should subtract 8 from each side instead of adding 8 to each side
G(n) + f(n)
3n + 1 + 4n - 3
7n - 2
