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
Gnom [1K]
3 years ago
13

Alison is learning how to walk. 50% of the time that she takes a step she falls down. Her older brother wants to design a simula

tion to find the probability she will fall down 5 out of the next 7 times she tries to take step. Which simulation design has an appropriate device and a correct trial?
Mathematics
2 answers:
marysya [2.9K]3 years ago
5 0

Answer: Option D

Step-by-step explanation:

Alison is learning how to walk.50% of times she takes a step she falls down.

Probability of falling down in next step

Probability of not falling down in next step

From ,the four option given,we have to find the best simulation which her older brother wants to design a simulation to find the probability that she will fall down 5 out of the next 7 times she tries to take step.

While Simulating the Probability of falling down should be

And , probability of not falling down

→→⇒F=Falling, NF=Non Falling

A) Roll a die letting 1 represent Alison falling and 2-6 represent Alison not falling. Roll the die five times.

Incorrect option,probabilities of falling and non falling does not match with Actual probability of falling and non falling.  

B) Roll a die letting 1 represent Alison falling and 2-6 represent Alison not falling. Roll the die seven times.

Incorrect option,probabilities of falling and non falling does not match with Actual probability of falling and non falling.

C) Let Heads represent Alison falling down and Tails representing Alison not falling down. Flip the coin five times.

Simulation is done only five times , that is coin has been flipped only five times.it must have been flipped seven times.Incorrect option.  

D) Let Heads represent Alison falling down and Tails representing Alison not falling down. Flip the coin seven times.

Simulation is done seven times , that is coin has been flipped seven times.So,she should fall 5 times that is head should appear 5 out of seven times, and tail should appear 2 out of seven times.correct option.

Option D

Click to let others know, how helpful is it

Read more on Brainly.com - brainly.com/question/4737299#readmore

MissTica3 years ago
4 0

Answer with explanation:

Alison is learning how to walk.50% of times she takes a step she falls down.

Probability of falling down in next step =\frac{50}{100}=\frac{1}{2}

Probability of not falling down in next step =\frac{50}{100}=\frac{1}{2}

From ,the four option given,we have to find the best simulation which her older brother wants to design a simulation to find the probability that she will fall down 5 out of the next 7 times she tries to take step.

While Simulating the Probability of falling down should be =\frac{5}{7}

And , probability of not falling down1-\frac{5}{7}=\frac{2}{7}

→→⇒F=Falling, NF=Non Falling

A) Roll a die letting 1 represent Alison falling and 2-6 represent Alison not falling. Roll the die five times.

P(F)=\frac{1}{6},P(NF)=\frac{5}{6}

Incorrect option,probabilities of falling and non falling does not match with Actual probability of falling and non falling.  

B) Roll a die letting 1 represent Alison falling and 2-6 represent Alison not falling. Roll the die seven times.

P(F)=\frac{1}{6},P(NF)=\frac{5}{6}

Incorrect option,probabilities of falling and non falling does not match with Actual probability of falling and non falling.

C) Let Heads represent Alison falling down and Tails representing Alison not falling down. Flip the coin five times.

P(F)=\frac{1}{2},P(NF)=\frac{1}{2}

Simulation is done only five times , that is coin has been flipped only five times.it must have been flipped seven times.Incorrect option.  

D) Let Heads represent Alison falling down and Tails representing Alison not falling down. Flip the coin seven times.

P(F)=\frac{1}{2},P(NF)=\frac{1}{2}

Simulation is done seven times , that is coin has been flipped seven times.So,she should fall 5 times that is head should appear 5 out of seven times, and tail should appear 2 out of seven times.correct option.

Option D

You might be interested in
caleb and emily are standing 100 yards from each other. caleb looks up at a 45 degree angle to see a hot air balloon. Emily look
Sunny_sXe [5.5K]
Check the picture below.

thus then

\bf \begin{cases}
y=100-a\\
y=a\sqrt{3}
\end{cases}\implies 100-a=a\sqrt{3}\implies 100=a+a\sqrt{3}
\\\\\\
100=a(1+\sqrt{3})\implies \boxed{\cfrac{100}{1+\sqrt{3}}=a}
\\\\\\
\textit{what is the altitude \underline{y} then?}\qquad y=100-a
\\\\\\
y=100-\cfrac{100}{1+\sqrt{3}}\implies y\approx 63.39745962156~yards

8 0
3 years ago
Read 2 more answers
If you wanted to shift the graph of y= 4x + 7 down, which equation could you use?
Tresset [83]

Answer:

D

Step-by-step explanation:

4 0
2 years ago
Julie uses crystals ro make a bracelet.
Lelechka [254]
Whats the rest of the problem?
3 0
3 years ago
Read 2 more answers
Luis and Berto sell TVs. Last month berto sold 15 more TVs. Together they sold 163. How many TVs did Luis sell?
Juli2301 [7.4K]

Luis sold 148 TVs.

Step-by-step explanation:

163-15=148

3 0
3 years ago
Principal, $2000; Annual interest rate, 5.3%; time, 2 years<br> After 2 years?
dangina [55]

Answer:

212 and I= 2000+212

              =2212

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Consider the inequality-5(x+7)&lt;-10 write an inequality representing the solution for x
    11·1 answer
  • The area of the regular hexagon is 10.4in
    15·1 answer
  • Which choices are equivalent to the quotient below? Check All That Apply.
    15·2 answers
  • A Statistics exam is created by choosing for each question on the exam one possible version at random from a bank of possible ve
    9·1 answer
  • What is an expressions that are equivalent to 7(3c).
    13·1 answer
  • An experiment was conducted as a one-way factorial design with K sample means, each based on n scores. What is the number of deg
    13·1 answer
  • Help me with this question please!
    13·1 answer
  • What angle is paired with angle D as an alternate interior angle?
    8·2 answers
  • What is the answer to -39 - -16 equal to and what are the steps to get it?
    12·2 answers
  • Select all the equations that describe this situation. Gino's backpack weighs 2 pounds less than Erik's backpack. Erik's backpac
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!