Answer:
The 99% confidence interval for the population mean is 22.96 to 26.64
Step-by-step explanation:
Consider the provided information,
A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,
The confidence interval if 99%.
Thus, 1-α=0.99
α=0.01
Now we need to determine 
Now by using z score table we find that 
The boundaries of the confidence interval are:
Hence, the 99% confidence interval for the population mean is 22.96 to 26.64
Answer:
Step-by-step explanation:
Rearranging the terms, we get 
. Dividing both sides by 7, we get 
, so 
Answer:
Step-by-step explanation:
Factor
w
2
+
18
w
+
77
using the AC method.
Tap for fewer steps...
Consider the form
x
2
+
b
x
+
c
. Find a pair of integers whose product is
c
and whose sum is
b
. In this case, whose product is
77
and whose sum is
18
.
7
,
11
Write the factored form using these integers.
(
w
+
7
)
(
w
+
11
)
6.
the y-intercept is 4, which means the line crosses the y-axis at the point (0,4).
[just put a dot on the number four that's right under the letter y]
the slope of the line is positive, so it goes up from left to right.
Start at the y-intercept. Move up 2 and then move right 1.
You are now at the point (1,6).
[go to 1 for the horizontal line, then go up 6 spaces.] [connect two points]
7. y= -1/2-3
8. y=3x+4
Answer:
Kayla should mark the level 3 whole tick marks to the left of the zero on the number line.
Step-by-step explanation:
This would mean the number is negative, for it is on the left of the zero. Another way to say this could be that the absolute value of -3 is three, for it is three whole tick marks from the zero.
