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
valentinak56 [21]
3 years ago
11

What is ↓ when n = 8?

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
6 0
I hope this helps you

You might be interested in
4-It has been a bad day for the market, with 70% of securities losing value. You are evaluating a portfolio of 20 securities and
riadik2000 [5.3K]

Answer:

b) 0.0007

c) 0.4163

d) 0.2375

Step-by-step explanation:

We are given the following:

We treat securities lose value as a success.

P(Security lose value) = 70% = 0.7

Then the securities lose value follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 20.

a) Assumptions

  • There are 20 independent trials.
  • Each trial have two possible outcome: security loose value or security does not lose value.
  • The probability for success of each trial is same, p = 0.7

b) P(all 20 securities lose value)

We have to evaluate:

P(x = 20)\\= \binom{20}{0}(0.7)^0(1-0.7)^{20}\\= 0.0007

0.0007 is the probability that all 20 securities lose value.

c) P(at least 15 of them lose value.)

P(x \geq 15)\\= P(x=15) + P(x = 16) + P(x=17) + P(x=18) +P(x = 19) +P(x = 20)\\ \binom{20}{15}(0.7)^{15}(1-0.7)^{5} +...+ \binom{20}{20}(0.7)^{20}(1-0.7)^{0} \\=0.4163

d) P(less than 5 of them gain value.)

P(gain value) = 1 - 0.7 = 0.3

P(x < 5)\\= P(x=0) + P(x = 1) + P(x=2) + P(x=3) +P(x = 4)\\ \binom{20}{0}(0.3)^{0}(1-0.3)^{20} +...+ \binom{20}{4}(0.3)^{4}(1-0.3)^{16} \\=0.2375

7 0
3 years ago
Is the answer English?
Vesnalui [34]
Yes indeed it is. Your correct
3 0
3 years ago
Find the pattern: 1, 1/4, 1/9, 1/16, 1/25
alexandr1967 [171]
The sequence is not geometric or arithmetic because there is no common difference or common ratio between each term.
Not a Geometric or Arithmetic Sequence
8 0
3 years ago
What is the area of this figure (4,1)(2,2)(2,-2)(-4,-2)(-2,-5)(2,-5)
V125BC [204]

Answer:

The area of this figure is 45 square units.

8 0
3 years ago
Pani says she should get $3 discount on the price of each shirt and a $3 discount on the price of each pair of jeans. Write and
PilotLPTM [1.2K]

Answer:

(S - 3) + (X - 3) = B

Step-by-step explanation:

S = amount of shirts

X = amount of jeans

B = total amount she would pay

(S - 3) + (X - 3) = B



5 0
3 years ago
Other questions:
  • Which equation represents the sentence?
    6·1 answer
  • Which best explains why the equation 7×+3=7×+3 has infinitely many solutions
    8·1 answer
  • Solve the proportion
    10·1 answer
  • When a number x is multiplied by 5, it gives the same result as when 48 are added to twice the number. Form an equation in terms
    5·1 answer
  • Help please :&gt; <br> Convert 108 km/hr into m/s ​
    13·2 answers
  • -4.75 = z/2<br> It's not that urgent, but I would appreciate it if you helped me!
    13·1 answer
  • Somebody help. I'll give brianliest for Brainliest answer.
    14·1 answer
  • The following represents slopes of two lines. Which answer choice describes the two lines? m = 7 and m = -7
    6·1 answer
  • The model represents the factorization of 2x2 5x 3. an algebra tile configuration. 4 tiles are in the factor 1 spot: 2 x tiles,
    11·1 answer
  • Question 15(Multiple Choice Worth 5 points)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!