Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 72.6 Mbps. The complete list of 50 data speeds has a mean of x=18.55 Mbps and a standard deviation of s=19.69 Mbps. a. What is the difference between​ carrier's highest data speed and the mean of all 50 data​ speeds? b. How many standard deviations is that​ [the difference found in part​ (a)]? c. Convert the​ carrier's highest data speed to a z score. d. If we consider data speeds that convert to z scores between −2 and 2 to be neither significantly low nor significantly​ high, is the​ carrier's highest data speed​ significant?

Answers

Answer 1

Answer:

a. 54.05 Mpbs.

b. 2.745... standard deviations.

c. The z-score is 2.745....

d. The carrier's highest data speed is significantly high.

Step-by-step explanation:

a. The difference between the highest measured data speed and the mean is 72.6 - 18.55 =  54.05 Mbps.

b. The amount of standard deviations of 54.05 Mbps is equal to this value divided by the standard deviations, so we yield [tex]\frac{54.05}{19.69} = 2.745...[/tex] standard deviations.

c. The z-score is equal to the difference between the mean and a data point in standard deviations, so the z-score is 2.745....

d. 2.745... is not between -2 and 2, so the carrier's highest data speed is not insignificant - so it's significantly high.


Related Questions

A medical clinic asks all of its patients to complete a quick survey after each appointment. Patients are asked to rate their experience on a scale of 1 to 10, with 1 representing a very poor experience, and 10 representing an excellent experience. The surveys are separated into categories based on age. Then, each month, a random sample of 10 surveys are gathered from each age category. The results of this month's random samples of the 40-60 age group and the 60+ age group are shown below.

40 - 60 2 6 5 5 3 7 3 9 1 4
60+ 4 8 7 10 3 6 5 8 9 5
The mean rating of the 40-60 group is two points _____
than the mean rating of the 60+ group. This difference is about ______
the variability of either group.

Answers

Answer:

A. Lower

B. Half

Step-by-step explanation:

Answer:

1. Lower and 2. Half

Which of the following can you use to find 20 percent of 48

1. 002(48)
2. 02(48)
3. 2(48)
4. 20(48)

Answers

Answer:

It's number 2

Step-by-step explanation:

20% of 48 is 9.6


5th grade math. Correct answer will be marked brainliest.

Answers

start with 1 ones, 8 tens, and 6 hundredths

Plz guys help me plz

Answers

It’s hard to see! Please let me know the numbers on the graph

Can someone help me with this please

Answers

Answer:

9,17

Step-by-step explanation:

larger no=8+smaller no

larger no+ smaller no= 26

::8+s(larger no from equation 1 )+s=26

*2s=18

*s=9

how do you solve the system:
y+1=2x
5y+5=10x

Answers

Answer:

choose "infinitely more solutions"

Step-by-step explanation:

Let's solve this system by substitution method

y+1=2x

- 1 = - 1

y = 2x -1   <-- sbstitute this in the next equation

---------------------------------------------------------------------------------

    5y+5 = 10x

5(2x -1) + 5 = 10x

10x -5 + 5 = 10x

10x + 0= 10x

- 10x = -10x

0 = 0      <-- infinitely more solutions

Answer:

5+5=10x

y=1×5+5=10x

45×+=1+32=

Which graph is the solution to the following inequality

Answers

Step-by-step explanation:

-8x+5 > 21

Minus 5 from both sides

-8x > 16

Then divide 8 from both sides (also I am pretty sure the sign would change because you are dividing by a negative number)

x < -2

So the answer is x is less than or equal to -2

or C

I hope this helps!

. What is the change of temperature if it was -20 degrees and rose to 14 degrees?​

Answers

Answer:

34

Step-by-step explanation:

please mark brainly :)

Write an equation of the line that passes through the given points. (−3, 5), (0, −1)

Answers

Answer:

Step-by-step explanation:

(-1 - 5)/(0 + 3)= -6/3 = -2

y - 5 = -2(x + 3)

y - 5 = -2x - 6

y = -2x - 1

Evaluate using the given values.​
a=1 b=2 c=3 x= -3 y= -2 z= -1
1.)2a+b/2 -c/b
2.)4x+3y
3.)5ab
4.)7y+2b
5.)7+a
6.)2b/4y
7.)3c-5z^2
8.)xyz
9.)ab/y^2
10.)6/abc

Answers

Answers:

1)1 1/2

2)-18

3)10

4)-10

5)8

6)-1/2

7) 34

8)-6

9)-1/2

10) 1

1/3 divided by 3 1/2

Answers

Answer:

2/21

Step-by-step explanation:

(4a^5-a)+(a^5+6a-1)
Add

Answers

Answer:

Step-by-step explanation:

4a^5 - a + a^5 + 6a - 1

5a^5 + 5a - 1

help please, i’ll mark brainliest

Answers

9514 1404 393

Answer:

  x = 7

Step-by-step explanation:

The corresponding sides are proportional:

  (2x +1)/5 = (x +2)/3

  3(2x +1) = 5(x +2) . . . . . cross multiply

  6x +3 = 5x +10 . . . . . . . eliminate parentheses

  x = 7 . . . . . . . . . . . . . . . subtract 5x+3 from both sides

Solve the following inequality for w 8w+8>-10w-5

Answers

Answer:

Step-by-step explanation:

8w+8 > -10w-5

18w + 8 > -5

18w > -13

w > -13/18

There are 15 boys and 12 girls and Mrs. smiths class what is the ratio of girls to boys written as a fraction in simplest form?

Answers

Answer:

4/5

Step-by-step explanation:

The ratio of girls to boys is 12/15. Since, there are 12 girls to the 15 boys in the classroom.

Then, you would simplify 12/15.

The simplified form of 12/15 is 4/5

7. The school librarian orders 35 new
books each year. How many new
books did the librarian order in the
past 12 years?

Answers

Answer:

420

Step-by-step explanation:

35x12

Find the number of solutions of the equation 9h^2 - 12h + 4 = 0 by using the discriminant.​

Answers

Answer:

Step-by-step explanation:

H=2/3

Answer:

one real solution

Step-by-step explanation:

:)

plz help me brainlest for whoever answers

Answers

Answer:

Circumference = 37.68

Area = 113.04

Step-by-step explanation:

Circumference = π × d

Circumference = 3,14 × 12 feet

Circumference = 37.68

Area = π × r²

Area = 3,14 × 6 × 6

Area = 113.04

Circumference = 37.68

Área= 113.04

Help its pre-algebra haha help plz

Answers

Answer:

8 ramen bowls

4 pho bowls

Step-by-step explanation:

12-4=8

The volume of this cylinder is 1751 cubic units. What is the volume of a cone that has the same base area and the sam height

Answers

Answer:

[tex]V_2 = 583.67[/tex]

Step-by-step explanation:

Given

Represent the volume of the cylinder with V1 and the cone with V2.

So:

[tex]V_1 = 1751[/tex]

Required

Find V2

The volume of a cylinder is:

[tex]V_1 = \pi r^2h[/tex]

Because the cone and the cylinder have the same base area and height, the volume of the cone is:

[tex]V_2 = \frac{1}{3}\pi r^2h[/tex]

Substitute [tex]V_1[/tex] for [tex]\pi r^2h[/tex].

[tex]V_2 = \frac{1}{3}\pi r^2h[/tex]

[tex]V_2 = \frac{1}{3}V_1[/tex]

Substitute 1751 for V1

[tex]V_2 = \frac{1}{3} * 1751[/tex]

[tex]V_2 = \frac{1* 1751}{3}[/tex]

[tex]V_2 = \frac{1751}{3}[/tex]

[tex]V_2 = 583.67[/tex]

The volume of the cone is 583.67 cubic units

please help. no body ever helps right away. i’ll mark brainlist and give thanks. geometry btw

Answers

9514 1404 393

Answer:

  437.3 ft

Step-by-step explanation:

The angle of depression can be copied inside the triangle to the angle of elevation (at lower right). Then the side x can be seen to be adjacent to the angle.

The mnemonic SOH CAH TOA reminds you of the relations. Here, we have the hypotenuse and we want the adjacent angle. The relevant relation is ...

  Cos = Adjacent/Hypotenuse

  cos(29°) = x/(500 ft)

Multiplying by 500 ft gives ...

  x = (500 ft)cos(29°)

  x ≈ 437.3 ft

_____

Additional comment

You have posted a number of problems that make use of this geometry. They are all solved the same way:

  a) identify the desired measure and the given measures

  b) using SOH CAH TOA, identify the relation applicable to those measures

  c) fill in the given values in the equation

  d) solve for the unknown

You may need to make use of what you know about angles and triangles in order to relate given angles to ones you need to use.

what is 3/4 as a fraction out of 100, a decimal,and a percentage​

Answers

Fraction: 75/100
Decimal 0.75
Percentage: 75%

Write an inequality that matches the graph.

A number line from zero to ten is shown. A ray extends to the left from a closed circle at six.

Answers

Answer:

[tex]x \leq 6[/tex]

Step-by-step explanation:

because the ray travels left, x has to be lower than 6, and since it is a closed circle, means that 6 is included in the answer, so x is less than or equal to 6.

Stella is writing an essay. She writes 2 pages in 16 minutes. The number of pages represented by p and time is represented by t. [2 points]



Part A) Fill in the table below.

Pages (p) Time (t)
2 16
(a) 32
5 (b)

Answers

Answer:

I think the answer is 32

Step-by-step explanation:

if you multiply 16×2 it will equal 32

D
А
A
10
ол |
3
сл| -
alw

Answers

Answer:

1/5 is the answer eeeeeeeeeeeeee

B. 1/5
I’m pretty positive that’s the answer

HELP ASSAP I need help on this question​

Answers

Answer:

X= 1, 2, 3, 4, 5

Y= 10, 20, 30, 40, 50

Step-by-step explanation:

hope this helps please press the pink "thanks" button

A snail moves 3/8 of a foot in 1/5of an hour. What is the snail's speed in feet per hour?
A) 3/40 feet per hour
B) 1 5/8 feet per hour
C) 1 7/8 feet per hour
D) 2 7 /8 feet per hour

Answers

b because you don’t multiply the denominator, so you mulitply the top by 5, to get 15 and put it over 8. so 15/8

Answer:

B) 1 5/8 feet per hour is your answer

3/8foot=1/5hour

15foot =8hour

1 foot =8/15 hour

Please help w my math homework giving a 100 points

Answers

Answer:

It is only 5 point not 100,she cappin

Step-by-step explanation:

Given that f(x) = 2x - 5, find the value of x that makes f(x) = 15.
а
5
b
10
20
Od
25

Answers

B) 10
if you plug in 10 for x it will make you multiply 2 time 10 which gives you 20 then subtract 5 which gives you 15

Answer:

When x=10 f(x) is equal to 15

Step-by-step explanation:

Just substitute the two equations, 15=2x-5 -> 20=2x -> x=10.

Listen in equation what is 596×9 subtract 64÷5 is this hard 13 points

Answers

Answer:

5351.2

Step-by-step explanation:

596 times 9 = 5364

64 divided by 5 = 12.8

5364 minus 12.8 = 5351.2

First part: 5364
Second part: 12.8
5364 - 12.8 = 5351.2
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