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
viktelen [127]
3 years ago
11

The nicotine content in a single cigarette of a particular brand has a distribution with mean 0.4 mg and standard deviation 0.1

mg. If 100 randomly selected cigarettes of this brand are analyzed, what is the probability that the resulting sample mean nicotine content will be less than 0.38
Mathematics
1 answer:
a_sh-v [17]3 years ago
8 0

Answer:

Step-by-step explanation:

For this case we can define the random variable of interest as: "The nicotine content in a single cigarette " and for this case we know the following parameters:

\mu = 0.4, \sigma = 0.1

And for this case we select a sample size of n =100 and we want to find the following probability:

P(\bar X

And for this case we can use the z score formula given by:

z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing we got:

z= \frac{0.38-0.4}{\frac{0.1}{\sqrt{100}}}= -2

And we can find the required probability with the normal standard table and we got:

P(z

You might be interested in
Kevin is 3 years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel. How old is Daniel now?
emmainna [20.7K]
Daniel would be 6 daniel was 1 year  2 years ago 1x4=4 plus put on the 2 years =6
6 0
3 years ago
Read 2 more answers
Find x- and y-intercepts. Write ordered pairs representing the points where the line crosses the axes. 2x+3y=6
sweet-ann [11.9K]

Answer:

x-intercept: (3, 0)

y-intercept: (0, 2)

Step-by-step explanation:

For a function like:

y = f(x)

The x-intercept is the value of x when y = 0

the y-intercept is the value of y when x = 0

Also remember that an ordered pair is written as (x, y).

In this case we have the equation:

2*x + 3*y = 6

For the x-intercept, we just replace y by zero in the equation, then we get:

2*x + 3*0 = 6

Solving this for x, we get:

2*x = 6

x = 6/2 = 3

Then in this case, the ordered pair for the x-intercept is (3, 0)

For the y-intercept, we just need to replace x by zero in the equation:

2*0 + 3*y = 6

Solving this for y, we get:

3*y = 6

y = 6/3 = 2

Then the ordered pair for the y-intercept is (0, 2)

8 0
3 years ago
A road has an incline of 10°. To the nearest foot, find the increase in altitude of a car after driving 4,000 feet along the roa
LUCKY_DIMON [66]

Answer:

7

Step-by-step explanation:

Because

6 0
3 years ago
Calcular los perimetros de las siguientes figuras porfa ayúdenme ya​
Basile [38]

Answer:

solo suma todos los valores x+4(3)+(x+x)

en el segundo x+5(2)+x+3(2)

en el tercero x-3+(2x+5)+(2x+5)

y en el cuarto x(3)+(x+4)

7 0
3 years ago
Show all of your work. Simplify the expression: 4(3x + 2) + 5x​
Kamila [148]

Answer:

17x + 8

Step-by-step explanation:

4(3x + 2) + 5x​

12x + 8 + 5x

17x + 8

8 0
3 years ago
Other questions:
  • What is the inequality shown in the graph
    7·1 answer
  • During which stage of engine operation does the burning mixture of air and fuel force the piston downward?
    7·2 answers
  • The cost of 3 notebooks and 2 pencils is $5.10. At the same prices, the cost of 2 notebooks and 3 pencils is $4.65. What is the
    15·1 answer
  • What is 2 2 3 ÷ 2 3 ?
    13·2 answers
  • How do you do this question?
    12·1 answer
  • What is 119.6<br><img src="https://tex.z-dn.net/?f=%20%5Cdiv%20" id="TexFormula1" title=" \div " alt=" \div " align="absmiddle"
    13·1 answer
  • Find the value of x.
    9·2 answers
  • What is the equation of the line?
    5·2 answers
  • SOMEONE HELP ME PLEASE IM STUCK ON THIS
    14·1 answer
  • 50 pts please help asap!! Which expression In factored form is equivalent to this expression?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!