answer.
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
mixas84 [53]
2 years ago
6

You simultaneously flip a pair of fair coins. Your friend gives you one dollar if both coins come up heads. You repeat this ten

times and your friend gives you X dollars. Find E[X], the expected number of dollars you receive. What is the probability that you do "worse than average"?

Mathematics
1 answer:
sergey [27]2 years ago
5 0

Answer:

E(X) = $2.5

P(Worst than Average) = 0.072

Step-by-step explanation:

I have solved this problem on paper. (Attached)

You might be interested in
French Co. marks up its goods 45% on cost. What is French's equivalent markup on selling price? Round to the nearest hundredth p
Fiesta28 [93]
<span>Let
CP ------> cost price
SP ------> Selling price

we know that
SP= CP + 0.45CP
Mark up = 0.45CP
Ratio of Mark up to Selling price------->  0.45CP/(CP + 0.45CP) 
= 0.45/(1+0.45)-------> </span><span>0.45/1.45=0.3103
</span><span>0.3103 multiplied by 100 = 31.03%
</span>
the answer is 
31.03%

7 0
2 years ago
You and three friends own a paint shop. The shop's profit was $536 in the first month. You always divide the profits equally. In
alexandr1967 [171]
C.  $360


$224x4=896 (total profit)

$896 (total) - $536 (first month profit) = $360 (second month profit)
4 0
2 years ago
Read 2 more answers
The goals against average (A) for a professional hockey goalie is determined using the formula A=60(g/2). In the formula, g repr
maks197457 [2]

Answer:

g = At/60

Step-by-step explanation:

Given:

A = 60(g/t)  

60(g/2) is a mistake in the question which the question                                        has corrected in the comments)

A is the average for a professional hockey goalie.

g is the number of goals scored against the goalie.

t represents the time played in minutes.

Finding 'g':

A = 60(g/t)

can be written as A = (60*g)/t

Multiplying by 't' on both sides:

At = (60*g)*t/t

At = 60*g

Dividing by '60' on both sides:

At/60 = 60*g/60

At/60 = g

⇒ g = At/60

3 0
2 years ago
Read 2 more answers
Ann is grouping 38 rocks. She can put them into groups of 10 rocks or as single rocks. What are the different ways Ann can group
hoa [83]

Answer: There will be two different ways of doing so.

Step-by-step explanation:

Since we have given that

Total number of rocks =38

If we want to groups of 10 rocks or as single rocks then there are 2 different ways ;

<u>Case I:</u>

if we group into 10 rocks

there will be four sets in which Ist set contains 10 rocks

Second set contains 10 rocks

Third set contains 10 rocks

and Fourth set remains with 8 rocks only.

<u>Case II:</u>

if we group as single rocks .

There will be 38 sets .



7 0
2 years ago
Please help me :(
Tanzania [10]

We can solve this problem by correctly analyzing the location of the points.

If the center of rotation is a point outside the triangle, then this would mean that there would be quadrant shift (revolution) of the whole triangle itself. Hence this would mean that the resulting triangle will not touch the pre-image at any point at all.

If the center of rotation is a point on the perimeter of the triangle, this would also result in a quadrant shift (revolution) or movement of the triangle.

Now if the center of rotation is a point inside the triangle, then this would be a simple rotation on its own quadrant hence the resulting image will touch the pre-image at more than one point. Hence the correct points are:

<span>point D and point E</span>

8 0
2 years ago
Other questions:
  • Given that Annie chooses a red shirt at random, what is the probability that the shirt will be large? Use the formula P(A | B)=
    7·1 answer
  • Suppose that you want to mix two coffees in order to obtain 100 pounds of a blend. If x represents the number of pounds of coffe
    8·1 answer
  • The mass of a colony of bacteria, in grams, is modeled by the function P given by P(t)=2+5tan^−1.(t/2), where t is measured in d
    11·2 answers
  • Which decimal is equivalent to \dfrac{4}{3} 3 4 ​ start fraction, 4, divided by, 3, end fraction? Choose 1 answer: Choose 1 answ
    10·1 answer
  • Tia Veronica Pam and Lily are sisters. Tia is eight years old and she’s two years older than Pam. Pam is five years younger than
    9·1 answer
  • Select the correct interpretation of the probability of getting an 11 when a pair of dice is rolled. Interpret an event as signi
    10·1 answer
  • Which point on the y-axis lies on the line that passes through point C and is perpendicular to line AB?
    13·1 answer
  • At cycle and sport, customers can rents bikes, electric scooters, kayaks, canoes, or paddle boards by the hour. Mr Thompson is r
    10·2 answers
  • In a survey, Damian found that 75% of the total number of teenagers surveyed like pop music. If 150 teenagers like pop music, wh
    7·2 answers
  • Evren used 24 centimeters of tape to wrap 3 presents. How many presents would Evren be able to wrap with 112 cm of tape?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!