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
prohojiy [21]
3 years ago
9

PLEASE HELP!!!!!!!!!

Mathematics
1 answer:
Ber [7]3 years ago
3 0

Answer:

A 12

B 30 lost

Step-by-step explanation:

You might be interested in
Suppose that 75% of all trucks undergoing a brake inspection at a certain inspection facility pass the inspection. Consider grou
RSB [31]

Answer:

b) 0.2961

c) 0.2251

d) Mean = 11.25, Standard deviation =  1.667  

Step-by-step explanation:

We are given the following information:

We treat trucks undergoing a brake inspection passin as a success.

P( trucks undergoing a brake inspection passes the test) = 75% = 0.75

a) Conditions for binomial probability distribution

  1. There are n independent trial.
  2. Each trial have a success probability p
  3. The probability of success is same for all trials.

Then the number of trucks undergoing a brake inspection 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 = 15

b) P(proportion of groups will between 8 and 10 trucks pass the inspection)

We have to evaluate:

P(8\leq x \leq 10) = P(x = 8) + P(x = 9) + P(x = 10)\\= \binom{15}{8}(0.75)^8(1-0.75)^7 + \binom{15}{9}(0.75)^9(1-0.75)^6 + \binom{15}{10}(0.75)^{10}(1-0.75)^5\\= 0.0393 + 0.0917 + 0.1651\\= 0.2961

c) P( exactly 3 trucks fail the inspection)

p = 0.25

P(x = 3)\\= \binom{15}{3}(0.25)^3(1-0.25)^{12}\\=0.2251

d) Mean and standard deviation

\mu = np = 15(0.75) = 11.25\\\sigma = \sqrt{np(1-p)} = \sqrt{15(0.75)(1-0.75)} = 1.667

6 0
3 years ago
Last year the attendance at the homecoming football game was 300.This year 360 people attended.What was the percent increase fro
AlexFokin [52]
The percent increase is 20%.
8 0
3 years ago
Read 2 more answers
How do i make an equilateral triangle swy with sides 2a units long?
ArbitrLikvidat [17]

Answer:

make it 90 degree

Step-by-step explanation:

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=4859%20%5Cdiv%2023" id="TexFormula1" title="4859 \div 23" alt="4859 \div 23" align="absmiddle"
DerKrebs [107]
The answer is 211.26087
3 0
3 years ago
Read 2 more answers
Which graph represents the solution set of y = x2 + 4x + 3 and y = 2x + 6?
dybincka [34]
I hope this helps you x^2+4x+3=2x+6 x^2+2x-3 =0 x +3 x -1 (x+3)(x-1)=0 x+3=0 x= -3 x-1=0 x=1
3 0
3 years ago
Read 2 more answers
Other questions:
  • Can u solve both 20. and 22.<br><br> Geometry
    13·1 answer
  • How do you find the slope of a line?
    13·1 answer
  • The measures of two vertical angles are represented by (3x+15) and (2x-10). what is the value of x
    7·1 answer
  • Why is there a 0 the quotient
    7·1 answer
  • Look at the figure below: an image of a right triangle is shown with an angle labeled y If sin y° = 7 divided by q and tan y° =
    8·1 answer
  • The height of a stack of DVD cases is in a proportional relationship to the number of cases in the stack. A stack of cases and i
    11·1 answer
  • A store buys 77 1 2 pounds of mulch in a large shipment. They divide the mulch up into bags that can each hold 2 1 4 pounds. The
    5·1 answer
  • Rolling a 6 sided die. Find the probability the number rolled is less than 3 given that it’s a factor of 6.
    8·1 answer
  • The area of<br>of a rectangle is (14x^4 + 7x^2) cm²<br>and its breadth is 7x^2 cm. Find its length.​
    5·2 answers
  • Factor completely.<br><br> 75u^3- 12u<br> --
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!