*Hint: When an equation has | it means the absolute value.
Up in the attachment I have provided above is the way that equation should be graphed.
Because the x is squared, it's known that the graph will have a parabola. The -4 is showing the indent it will have.
Answer:
Step-by-step explanation:
Researchers measured the data speeds for a particular smartphone carrier at 50 airports.
The highest speed measured was 76.6 Mbps.
n= 50
X[bar]= 17.95
S= 23.39
a. What is the difference between the carrier's highest data speed and the mean of all 50 data speeds?
If the highest speed is 76.6 and the sample mean is 17.95, the difference is 76.6-17.95= 58.65 Mbps
b. How many standard deviations is that [the difference found in part (a)]?
To know how many standard deviations is the max value apart from the sample mean, you have to divide the difference between those two values by the standard deviation
Dif/S= 58.65/23.39= 2.507 ≅ 2.51 Standard deviations
c. Convert the carrier's highest data speed to a z score.
The value is X= 76.6
Using the formula Z= (X - μ)/ δ= (76.6 - 17.95)/ 23.39= 2.51
d. If we consider data speeds that convert to z scores between minus−2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant?
The Z value corresponding to the highest data speed is 2.51, considerin that is greater than 2 you can assume that it is significant.
I hope it helps!
Answer:
Diego playlist has 36 songs in rock genre, 9 songs in Country genre, 27 songs in hip hop genre and 24 songs in electronica genre.
Step-by-step explanation:
Given:
Total Songs on playlist = 90
rock = 40%
country = 10%
hip hop = 30%
rest is electronica.
We need to find the number of songs in each genre.
rock = 40%
So Number of songs in rock genre = 
country = 10%
So Number of songs in country genre = 
hip hop = 30%
So Number of songs in hip hop genre = 
.
and rest is electronica genre.
Number of songs in electronica genre can be calculated by Subtracting Number of songs in rock genre and Number of songs in country genre and
Number of songs in hip hop genre from Total number of songs.
framing in equation form we get;
Number of songs in electronica genre = 
Hence Diego playlist has 36 songs in rock genre, 9 songs in Country genre, 27 songs in hip hop genre and 24 songs in electronica genre.
Answer:
<u>C. 1 to 7.99</u>
Step-by-step explanation:
Let's recall that for calculating the range of a data set, we have to find out the lowest and the highest values of the data set.
As we can see in the graph below, the lowest value in the histogram is 1 and the highest is 7.99, therefore the correct answer is:
<u>C. 1 to 7.99</u>
Answer:
15 m and 24 m
Step-by-step explanation:
Let x represent the length of the longer side. Then 5/8x is the shorter side and the difference is x -5/8x = 3/8x.
You say the difference is 9 m, so ...
... 3/8x = 9 m
... x = (8/3)(9 m) = 24 m . . . . longer side
and the shorter side is (5/8)(24 m) = 15 m. . . . . shorter side
