1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tanzania [10]
3 years ago
13

An athletics coach states that the distribution of player run times (in seconds) for a 100-meter dash is normally distributed wi

th a mean equal to 13.00 and a standard deviation equal to 0.2 seconds. What percentage of players on the team run the 100-meter dash in 13.28 seconds or faster
Mathematics
1 answer:
Elza [17]3 years ago
8 0

Answer:

P(X

And we can find this probability using the normal standard distribution table and we got:

P(z

And the percentage faster than 13.28 seconds would be 91.9%

Step-by-step explanation:

Let X the random variable that represent the runtimes of a population, and for this case we know the distribution for X is given by:

X \sim N(13,0.2)  

Where \mu=13 and \sigma=0.2

We want to find this probability:

P(X

And we can use the z score formula given by:

z=\frac{x-\mu}{\sigma}

Using this formula we have:

P(X

And we can find this probability using the normal standard distribution table and we got:

P(z

And the percentage faster than 13.28 seconds would be 91.9%

You might be interested in
4 ounce bottle of medicine contains 20 doses how many doses are in a 13 ounce of all of the same medicine
NNADVOKAT [17]
\bf \begin{array}{ccllll}
ounces&doses\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
4&20\\
13&x
\end{array}\implies \cfrac{4}{13}=\cfrac{20}{x}

solve for "x"
3 0
3 years ago
Read 2 more answers
PLS HELP PLS HELP PLS HELP PLS HELP PLS HELP PLS HELP PLS HELP PLS HELP PLS HELP
kipiarov [429]
The slope of this line is -1 you find this by using the slip formula of y-y over x-x find two points on the line so I used points (-2,2) and (-1,1) plug them into the formula to get the slope of -1 hope this helps:)
6 0
3 years ago
Read 2 more answers
Can some one help me with this will give brainliest
a_sh-v [17]
The first one would be C and the 2nd is A. 
7 0
3 years ago
What is the surface area of the prism? A. 180 in2 B. 204 in2 C. 120 in2 D. 192 in2
alukav5142 [94]
Asking the Math Gods...

B. 204in^2

<span><span>Surface Area (SA) =√3 * a²+ 3 * a * h</span>2 </span><span />


8 0
2 years ago
Solve the equation 8y-6=5y+12
Bumek [7]
  8y - 6 = 5y + 12
- 5y       - 5y
  3y - 6 = 12
      + 6   + 6
       3y = 18
        3      3
         y = 6
5 0
3 years ago
Other questions:
  • Charles needs construction paper to finish a project. To wrap the box he knows he needs a lot of construction paper. The box is
    14·1 answer
  • A. Can trace a particular file in a few seconds. B. Help us in many ways by coming up with new information. C. Are more useful i
    9·1 answer
  • PLEASE HELP I NEED ANSWER
    6·1 answer
  • Find the values of x when y = 1<br> y=x^2 -2x-3
    9·1 answer
  • Which relations are functions and which are not functions?
    12·1 answer
  • Mily was born, she weighed 8.2 pounds. Two months later she weighed 10.15 pounds. How much weight did Emily gain in two months?
    10·2 answers
  • N Over 33 = 4 Over 11
    13·1 answer
  • F=ma. Solve the equation for a
    13·1 answer
  • A survey asked 60 students if they play an instrument and if they are in band.
    8·2 answers
  • A package of 30 Oreos cost $3.60. Kennedy says the unit rate is 0.12. Mason says the unit rate is 8.33. Who is right?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!