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
Alexxx [7]
3 years ago
14

A container contains 10 diesel engines. the company chooses 8 engines at​ random, and will not ship the container if any of the

engines chosen are defective. find the probability that a container will be shipped even though it contains 2 defectives if the sample size is 8.
Mathematics
1 answer:
lions [1.4K]3 years ago
7 0

Answer:

16/25

Step-by-step explanation:

We just have to find the probability that the 8 non-defects are chosen.

1. Chance first defect is undetected: 8/10 = <em>4/5</em>

2. Chance second defect is undetected: <em>4/5</em>

3. Total probability': 4/5 * 4/5 = 16/25

You might be interested in
The only solution to |r+3|=1 is -2? true or false
ikadub [295]
True! The absolute Value is just the value of the digit. -2+3=-1. The absolute value of -1 is 1. There is no other combination of numbers that would lead to this answer.
7 0
3 years ago
Read 2 more answers
A Florida neighborhood is comprised of a total of 250 houses of which 12% are in foreclosure. A random sample of 91 homes from t
natka813 [3]

Answer:

the standard error of the proportion is 0.0272

Step-by-step explanation:

We have that if the sample size is greater than 5% of the entire population, a finite population correction factor (fpc) is multiplied with the standard error :

fpc = \sqrt{\frac{N -n}{N -1} }

We know that N = 250 n = 91, replacing:

fpc = \sqrt{\frac{250 - 91}{250 -1} }

fpc = 0.799

Now, the formula would then be:

SE  = \sqrt{\frac{p * (1 -p)}{n} }*fpc

Now replacing, knowing that p = 0.12

SE= \sqrt{\frac{0.12 * (1 - 0.12)}{91} }*0.799

SE = 0.0272

So the standard error of the proportion is 0.0272

6 0
3 years ago
Luigi uses 39 cups of flour for every 6 pizzas he makes.Complete the table using equivalent ratios. Pizzas
zlopas [31]

Answer:

Part 1) The number of cups of flour needed to make 4 pizzas is 26

Part 2) The number of pizzas Luigi can make with 13 cups of flour is 2

Step-by-step explanation:

we know that

Luigi uses 39 cups of flour for every 6 pizzas he makes

Let

y ----> the number of cups of flour used

x ---> the number of pizzas he makes

In this problem

The relationship between the variables x, and y, represent a proportional variation

we have the ordered pair (6,39)

so

\frac{y}{x}=\frac{39}{6}

Part 1) Find out the number of cups of flour needed to make 4 pizzas

using a proportion

\frac{y}{4}\ \frac{cups\ of\ flour}{pizzas}=\frac{39}{6}\ \frac{cups\ of\ flour}{pizzas}

Solve for y

y=\frac{39}{6}(4)

y=26\ cups\ of\ flour

Part 2) Find out the number of pizzas Luigi can make with 13 cups of flour

using a proportion

\frac{13}{x}\ \frac{cups\ of\ flour}{pizzas}=\frac{39}{6}\ \frac{cups\ of\ flour}{pizzas}

Solve for x

x=13(6)/39

x=2\ pizzas

6 0
3 years ago
Read 2 more answers
HELP PLEASE!!! Which of the following is not a true statement about solving two-step equations?
tensa zangetsu [6.8K]
C= two step equations require all number to be whole number in order to solve.

Here is an example that disproves that:
 .5x + 8= 18
  <u>      -8     -8</u>
<u>.5</u>x = <u>10
</u>.5       .5

x = 20  (.5 is certainly not a whole number but I solved it anyway)
6 0
3 years ago
Read 2 more answers
Let O be an angle in quadrant III such that cos 0 = -2/5 Find the exact values of csco and tan 0.​
vivado [14]

well, we know that θ is in the III Quadrant, where the sine is negative and the cosine is negative as well, or if you wish, where "x" as well as "y" are both negative, now, the hypotenuse or radius of the circle is just a distance amount, so is never negative, so in the equation of cos(θ) = - (2/5), the negative must be the adjacent side, thus

cos(\theta)=\cfrac{\stackrel{adjacent}{-2}}{\underset{hypotenuse}{5}}\qquad \textit{let's find the \underline{opposite side}} \\\\\\ \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies \sqrt{c^2-a^2}=b \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ \pm\sqrt{5^2 - (-2)^2}=b\implies \pm\sqrt{25-4}\implies \pm\sqrt{21}=b\implies \stackrel{III~Quadrant}{-\sqrt{21}=b}

\dotfill\\\\ csc(\theta)\implies \cfrac{\stackrel{hypotenuse}{5}}{\underset{opposite}{-\sqrt{21}}}\implies \stackrel{\textit{rationalizing the denominator}}{-\cfrac{5}{\sqrt{21}}\cdot \cfrac{\sqrt{21}}{\sqrt{21}}\implies -\cfrac{5\sqrt{21}}{21}} \\\\\\ tan(\theta)=\cfrac{\stackrel{opposite}{-\sqrt{21}}}{\underset{adjacent}{-2}}\implies tan(\theta)=\cfrac{\sqrt{21}}{2}

4 0
2 years ago
Other questions:
  • How do I simplify 9v+9(1+7v) and can you show me the work
    5·1 answer
  • the two lines represent the amount of water, over time, in two tanks that are the same size. which container is filling more qui
    15·1 answer
  • I'm need help please help me
    15·2 answers
  • Can anyone helpppp???
    9·1 answer
  • 4. At Lilly's Bakery, the ideal weight of a loaf of bread is 24 ounces. By law, the actual weight can vary from
    14·1 answer
  • Plz Answer
    9·1 answer
  • Add. Please show work too.
    15·1 answer
  • Need this answered ASAP
    11·1 answer
  • Pls can someone help me
    7·1 answer
  • A restaurant is serving a special lunch combo meal that includes a drink, a main dish, and a dessert. Customers can choose from
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!