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
Otrada [13]
3 years ago
15

Let x be the number of successes throughout n independent repetitions of a random experiment having probability of success p=1/4

. determine the smallest value of n so that p(1<=x)>=0.7
Mathematics
1 answer:
Llana [10]3 years ago
6 0

To answer problems like this you have to use binomial:

P (x > 1) = 1 – p (0 < x < 1) > .7 

So:

1 – p (0) – p (1) > .7 

1 – (3/ 4) ^n – (3/ 4) ^n (n – 1 ) (1/ 4) > .7 

Therefore n > 5.185, and the smallest value of n so that we can satisfy the given condition is 6 (rounded up)

<span> </span>

You might be interested in
Apply the rules for order of operations to simplify 2+3-4+(5X4)
katovenus [111]
The answer should be 21 hope it helps
5 0
3 years ago
Read 2 more answers
If 20 machines produce 1,240 printers in a day,
d1i1m1o1n [39]

Answer:

12 machines

Step-by-step explanation:

The production rate per machine is 1240/20 = 62

For 1,984 printers it would take 32 machines (1984/62 = 32)

32 needed minus the 20 they already have means they need 12 more machines.

7 0
3 years ago
16 POINTS. Find x and y intercepts and show work. <br><br> I’m looking for number six.
aliya0001 [1]
X^4-3x³+4x
x^4-3x³+3x+x
(x^4+x)-(3x³-3x)
x(x³+1)-3x(x²-1)
x(x+1)(x²-x+1)-3x(x+1)(x-1)
x(x+1)(x²-x+1-3x+3)
x(x+1)(x²-4x+4)
x(x+1)(x-2)(x-2)
so x intercepts are (0,0), (-1,0) and (2,0)
the y intercept is (0,0)

8 0
3 years ago
Help please thank you!
Liula [17]
97 rounds up to 100
78 rounds up to 80
100x80= 8,000
estimate=8,000

97x78=7,566
product=7,566
7 0
3 years ago
Read 2 more answers
Division of fractions 12/15 divided by 1/5
zimovet [89]
12/15÷1/5

when dividing fractions, all you have to do is multiply the first number by the second number's reciprocal
(reciprocal is denominator over numerator)

12/15÷1/5
12/15×5/1

remember when multiplying fractions it's the the two numerators multiplied together over the two denominators multiplied

12/15×5/1
60/15
4

The answer is 4
4 0
3 years ago
Read 2 more answers
Other questions:
  • Solve each proportion. What is the soulution to M/10=10/3
    14·1 answer
  • How to convert improper fractions to a mixed numeral
    5·2 answers
  • Round 0.743<br> to the nearest hundredth
    10·2 answers
  • What is the value of x in 5x−3(x−11)=7(2x−5)+2
    8·1 answer
  • Which graph represents a direct variation relationship?
    14·1 answer
  • Can someone help me on this?
    8·1 answer
  • What is the multiplier for a 30% decrease. *
    10·1 answer
  • Don’t need to explain, but if you want to then go ahead!
    11·2 answers
  • Which polynomial is prime?<br><br> x2 – 36<br> x2 + 16<br> x2 – 7x + 12<br> x2 – x – 20
    13·2 answers
  • There are about 3.2*10^7 seconds in every year. The earth is approximately 4.5*10^9 years old. (That's 4 and a billion years old
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!