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
KiRa [710]
3 years ago
6

Fo quality control purposes, we collect a sample of 300 items and find 36 defective items in it. Construct a 90% confidence inte

rval [a, b] for the proportion of defective items in the whole shipment.
Mathematics
1 answer:
MrMuchimi3 years ago
7 0

Answer:

(0.089 ; 0.151)

Step-by-step explanation:

Given :

Sample size, n = 300

Number of defective items, x = 36

The confidence interval required here is that for a one sample proportion :

The confidence interval is defined thus :

Phat ± Zcritical * √[Phat(1 - phat) / n]

Zcritical at 90% = 1.645

Phat = x / n = 36 / 300 = 0.12

Hence,

C.I = 0.12 ± 1.645 * √[0.12(1 - 0.12) / 300]

C.I = 0.12 ± (1.645 * 0.0187616)

C.I = 0.12 ± 0.0308629

C.I = (0.089 ; 0.151)

You might be interested in
__
Alenkasestr [34]

Answer:

0.36 = 36/100 = 9/25

so the simplest form is 9/25

3 0
2 years ago
Read 2 more answers
3³+1x9+12 answer please, I really think it's 48.
UNO [17]

Answer:

You are correct the answer is 48.

Step-by-step explanation:

To begin solving this question you would want to start simplifying it to make it more understandable.

3^3 is 27 which now gives you 27 + 1 x 9 +12 which makes it easier to solve.

Then you would take 1 x 9 = 9 (multiply left to right)

Now it is simple addition

27 + 9 + 12 = 48

Hopefully this helps.

6 0
3 years ago
Read 2 more answers
I'll mark as Brainliest, Please answer ASAP, Ihave MCAS tomorrow. How could this be true?? Please Explain.​
Vaselesa [24]

Answer:

See below

Step-by-step explanation:

The number of loaves of bread remaining can only go as low as ZERO (you can't have negative loaves) ...and can only go as high as when h = 0

     so    0 = 42-3.5 h    

             3.5 h = 42

                h = 12       and   min is  h = 0   ( when there are 42 loaves to start)

So:

<u>0≤ h ≤ 12 </u>

5 0
2 years ago
Define the opposite and the absolute value of -8.
umka2103 [35]

Answer:

The opposite of -8 is 0 and the absolute value in 8

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Help with Similarity Triangles Geometry. I dont understand how to solve for x on this one.​
valkas [14]

since we know those two triangles are similar then we can use proportions.

\cfrac{AE}{AB}=\cfrac{AD}{AC}\implies \cfrac{14-8}{2x}=\cfrac{14}{2x+4}\implies \cfrac{6}{2x}=\cfrac{14}{2x+4}\implies \cfrac{3}{x}=\cfrac{14}{2x+4} \\\\\\ 6x+12=14x\implies 12=8x\implies \cfrac{12}{8}=x\implies \cfrac{3}{2}=x \\\\[-0.35em] ~\dotfill\\\\ AB=2x+4\implies AB=2\left( \frac{3}{2} \right)+4\implies AB=3+4\implies AB=7

6 0
2 years ago
Other questions:
  • The regular price of the soccer ball is $25. During the sale, it is 20 percent off. Use ratio reasoning to find x, the amount th
    14·1 answer
  • The measure of an angle is 135 degrees. What is the measure of its supplementary angle ?
    5·1 answer
  • On a graph, the solution to a system of linear equations is represented by __________.
    7·2 answers
  • In this diagram, BAC – EDF. If the
    9·1 answer
  • You are installing new carpeting in a family room. The room is rectangular with dimensions 20 1/2 feet × 13 1/8 feet. You intend
    15·1 answer
  • A side of the triangle below has been extended to form an exterior angle of 132°. Find
    7·2 answers
  • A pair of equations is shown below.
    9·1 answer
  • Find the value of the variable. The value of 9 - y is twice the value of y.
    6·2 answers
  • (a-b) ( a+b) simplify​
    12·1 answer
  • Question : Explore criteria of congruency of triangles using a set of triangle cut outs
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!