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
natulia [17]
3 years ago
6

A coin is to be spun 25 times. Let x be the number of spins that result in heads (H). Consider the following rule for deciding w

hether or not the coin is fair: Judge the coin to be fair if 8 ≤ x ≤ 17. Judge the coin to be biased if either x ≤ 7 or x ≥ 18. a. What is the probability of judging the coin to be biased when it is actually fair?
Mathematics
1 answer:
larisa [96]3 years ago
5 0

Answer:

0.0433

Step-by-step explanation:

Since we have a fixed number of trials (N = 25) and the probability of getting heads is always p = 0.05, we are going to treat this as a binomial distribution.

Using a binomial probability calculator, we find that the probability of obtaining heads from 8 to 17 times is 0.9567 given that the con is fair. The probability of obtaining any other value given that the coin is fair is going to be:

1 - 0.9567 = 0.0433

Since we are going to conclude that the coin is baised if either x<8 or x>17, the probability of judging the coin to be baised when it is actually fair is 4.33%

You might be interested in
The 9th grade class at Georgia high School wanted to go on a field trip to a soda factory. The trip will cost $100. The students
Deffense [45]

Answer:

2 Pages Long

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Find the perimeter of this shape please help I will award brainlisest
stira [4]

Answer:

22 cm

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
What is the length of DE
irina1246 [14]
The answer is b.6, you set up a proportion of the corresponding sides in both triangles...12/9=8/x solve for x and get 6.
8 0
2 years ago
Read 2 more answers
sydney planted 5/9 of her fall flowers.she had 63 unplanted flowers to start.how many flowers does she have left to plant.?how m
PilotLPTM [1.2K]
35. 

5/9= 0.555555556

0.55555556*63=35

2/3= 0.6666666667

0.666666667*63= 42

63-35=28

42-28=14
She has 35 unplanted flowers and must plant 14 more in order to have filled 2/3 of her flower bed. 




8 0
3 years ago
A wireless company offers two cell phone plans. For the month of September, Plan A charges $35 plus $0.25 per minute for calls.
valentina_108 [34]

Answer:

60 minutes

Step-by-step explanation:

Let the number of minutes be represented as x

For Plan A

Plan A charges $35 plus $0.25 per minute for calls.

$35 + $0.25 × x

35 + 0.25x

For Plan B

Plan B charges $20 plus $0.50 per minute for calls.

$20 + $0.50 × x

20 + 0.50x

For what number of minutes do both plans cost the same amount?

This is calculated by equating Plan A to Plan B

Plan A = Plan B

35 + 0.25x = 20 + 0.50x

Collect like terms

35 - 20 = 0.50x - 0.25x

15 = 0.25x

x = 15/0.25

x = 60 minutes.

Hence, the number of minutes that both plans cost the same amount is 60 minutes

7 0
2 years ago
Other questions:
  • Can someone help me I don’t know how to do this
    15·1 answer
  • Functions f(x) and g(x) are shown below:
    6·2 answers
  • Find the Taylor series for f(x)=sin(x) centered at c=π/2.sin(x)=∑ n=0 [infinity]On what interval is the expansion valid? Give yo
    14·1 answer
  • I need help asap please
    8·2 answers
  • Can some one help me with this
    7·2 answers
  • A farmer collected 12 dozen eggs from her chickens. She sold 5/ of the eggs at the farmer's market, and gave the rest to friends
    9·1 answer
  • Geometry please help i’m trying to go to college
    12·1 answer
  • Carly has averaged four goals per game for the first eight games of the indoor soccer season (which runs for 10 games)
    7·1 answer
  • A rectangular prism has a length of 18 feet, a height of 14 feet, and a width of 2 feet. What is its volume, in cubic feet?
    8·2 answers
  • There are three people in Melissa's family. The range of their shoe sizes is 5. Two people her family wear shoe size 7. Melissa'
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!