![zazzles88151](/avatars/38419.jpg)
zazzles88151
13.06.2020 •
Mathematics
Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 76.6 Mbps. The complete list of 50 data speeds has a mean of x overbarequals18.39 Mbps and a standard deviation of sequals31.86 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 minus2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant?
Solved
Show answers
More tips
- L Leisure and Entertainment Mysteries of the Name Vyacheslav Dobrynin...
- F Food and Cooking Why Chicken Liver Pops and How It Can Affect Your Health?...
- F Food and Cooking Effective Methods to Organize Videos in your iPad According to Content...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
Answers on questions: Mathematics
- M Mathematics Help please I don’t know what to do ASAP last question...
- M Mathematics Find the value of given expression...
- M Mathematics 1. Let x= -2 and y= -5. (NC.7.NS.2) Which expression has a negative value? A. X+y B.X-y C.[x] [y] D. X/y...
- M Mathematics PLEASE HELP!(I know its not math, stop hatin!)(If a human and a dog were the same)...
- M Mathematics A cylinder has diameter of 6 cm and a volume of 36 pi cm 3 . Find it s height and radius in centimeters...
- M Mathematics Find the value of given expression...
- M Mathematics A restaurant is introducing a new gluten-free recipe for the topping in its baked zucchini recipe. The chef will continue to use this topping if less than 8% of her...
- M Mathematics WHAT IS THE GROUP of AtomTHAT CANNOT EXIST SEPERATELY...
- M Mathematics Suppose that the relation G is defined as follows. G={(7, d), (1, a), (8,8), (d, 0); Give the domain and range of G. Write your answers using set notation. domain =...
- M Mathematics A rectangle is 3.5 cm long and 5 cm wide. A similar rectangle is 4.9 cm long. Find the width of the similar rectangle. Answer choices: 5 cm 7 cm 8 cm 6 cm...
Ответ:
Step-by-step explanation:
Hello!
The variable of interest is
X: data speed of a particular smartphone carrier in one airport.
n= 50 airports
X[bar]= 18.39 Mbps
S= 31.86 MBps
The highest speed recorded X= 76.6 Mbps
a.
The difference between the highest speed and the mean is:
X-X[bar]= 76.6-18.39= 58.21 Mbps
b.
To calculate how many standard deviations away from the mean the highest speed is, you have to divide it by the standard deviation:
c.
The standard normal distribution is tabulated. Any value of any random variable X with normal distribution can be "converted" by subtracting the variable from its mean and dividing it by its standard deviation. This is exactly what you did in items a. and b., so the Z score is
Z= 1.82
d.
-2 ≤ Z ≤ 2⇒ the calculated Z value is within both limits, so the carrier's highest data speed is not significant.
I hope this helps!
Ответ: