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
kvv77 [185]
4 years ago
13

Maggie is practicing her penalty kicks for her upcoming soccer game. During the practice, she attempts 10 penalty kicks. If each

attempt at the penalty kick is independent of the other attempts and if she scores 65% of the time, historically, what is the probability that she scores at least eight goals? Give your answer as a percentage precise to two decimal places.
Mathematics
1 answer:
liubo4ka [24]4 years ago
5 0

Answer: 26.17%

Step-by-step explanation:

Probability she scored at least 8 goals = probability that she scores 8 goals + probability that she scores 9 goals + probability that she scores 10goals.

Probability of each goal is approximated by the probability distribution formula for selection. From a larger n sample, with a varied sample r, probability is denoted by:

P(X=r) = nCr × p^r × q^n-r

Where p = probability of success = 65% = 0.65

q = 1-p = 1 - 0.65 = 0.35

n = 10

r is varied between 8, 9 and 10.

When r = 8

P(X=8) = 10C8 × 0.65^8 × 0.35² = 0.1757

When r = 9

P(X=9) = 10C9 × 0.65^9 × 0.35¹ = 0.0725

When r = 10

P(X=10) = 10C10 × 0.65^10 × 0.35^0 = 0.0135

Summation of all probabilities = 0.1757 + 0.0725 + 0.0135 = 0.2617

Probability of scoring at least 8goals = 0.2617 = 26.17%

You might be interested in
Which two lines are parallel?<br><br> 3x + y = -2 <br><br> 2y – 6x = 4 <br><br> 2y = -6x – 8
Leviafan [203]

Answer:

3x + y = -2 & 2y = -6x -8

7 0
4 years ago
Read 2 more answers
Elsie is going to flip a coin and spin a spinner. The coin has a heads and a tails. The spinner has four equal parts that are ye
Natalka [10]

Answer:

1/8

Step-by-step explanation:

.5x.25=.125

1 divided by 8 equals .125

7 0
2 years ago
Point A is located at -7 on a number line, and point B is located at 3 on the number line. Point C is the same distance away fro
mel-nik [20]

Answer:

Dang someone come help him

Step-by-step explanation:

3 0
3 years ago
1) Which graph represents the equation y = 1/2x + 3<br> Plz help
kakasveta [241]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
Based on the shape of the graph above, describe one or more functions you can think of to model the data. (Hint: Think of the gr
Valentin [98]

Answer:

  A polynomial together with the absolute value function can make a pretty good model (see the attachment)

Step-by-step explanation:

With a sufficient number of specified points, a polynomial can make a pretty good model of almost any smooth function. Here, the function's derivative is undefined at a couple of points, so there are some options for those. If the slopes match on either side of those zeros, then the absolute value function can be used to model the "reflection" at the x-axis. Otherwise, a piecewise description can be used.

The left portion of the curve looks a little like a sine wave, but a cubic or other polynomial can model that wave fairly well. The portion to the right of the maximum looks like a bouncing ball, so can be modeled by a piecewise quadratic function.

_____

<em>Comment on the graph</em>

The attached graph is of a 9th-degree polynomial model. Points were added until the model almost matched the curve. If additional points are defined, a higher-degree model may give a better fit. The "bounce" is modeled by the absolute value function.

7 0
4 years ago
Other questions:
  • A museum open at 8 a.m. in the first hour 350 people purchase admission tickets in the second hour 20% more people purchase admi
    11·1 answer
  • F(x) = 4x + 1 and g(x) = 4x - 3 <br>Find f(x) * g(x)​
    5·1 answer
  • URGENT !!! f(x) = x^2. what is g(x)?
    14·1 answer
  • 48 ? Negative 8 =negative 6
    11·1 answer
  • 2.
    7·1 answer
  • Polygon LMNP slides 5 units right and 4 units down on the coordinate plane. If the original measure of angle M was 50 degrees, w
    9·2 answers
  • HELPPP NEED THIS IN THE NEXT 10 MINSS!!!!
    11·2 answers
  • Is -1 a irrational number
    11·2 answers
  • A mainly musical vocal compostion
    11·1 answer
  • the area of the triangle below is 1/4 square meters. what is the length of the base. express your answer in simplest form
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!