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
Travka [436]
3 years ago
9

The specification for the pull strength of a wire that connects an integrated circuit to its frame is 10 g or more. In a sample

of 83 units made with gold wire, 70 met the specification, and in a sample of 115 units made with aluminum wire, 98 met the specification. Find a 99% confidence interval for the difference in the proportions of units that meet the specification between units with gold wire and those with aluminum wire.

Mathematics
1 answer:
mars1129 [50]3 years ago
8 0

Answer:

The formula for the lower and upper bounds for a confidence interval for the difference between to proportions is given in the picture.

In this case the p1 is going to be the proportion of units of gold wire that met the specification. p2 is going to be the proportion of aluminum wire that met the specification. The z for a 99% confidence interval is going to be 2. 575. n1 is going to be the total number of units of gold wire sampled and n2 is going to be the total number of units of aluminum wine sampled.

p1 = 70/83 = 0.843

p2 = 98/115 = 0.852

The difference between them is 0.009.

The value of the square root that is multiplying the z is: 0.052

The lower bound is going to be -0.043

the upper bound is going to be 0.061

The confidence interval is:

( -0.043, 0.061 )

You might be interested in
Exercise #1: The amount of money in Nicole's bank account can be represented by the function f(x) = 32.50x + 200,
kolezko [41]
The initial amount in the account was $200 (y intercept). She adds $32.50 each day to her bank account (slope).
7 0
3 years ago
Bonjour, vous pouvez m'aider pour mon devoir de maths Quelle la valeur exacte de la longueur d'un cercle de rayon 7 m
strojnjashka [21]

Answer:

english?

Step-by-step explanation:

3 0
3 years ago
Which is equivalent to Cubic root of x^10 after it has been simplified completely?
Maslowich
When we say cubic root, it means that the exponent of your divisor is three. You can solve this by counting how many three's are there in a ten. So there are three three's. the other x has an exponent one and therefore is denoted by ∛x. The answer would be x³∛x.
4 0
3 years ago
11. Find the product of (3x+5) with (2x - 3) in simplest form.
STatiana [176]

Answer:

(3x + 5)(2x - 3) = 6x² + x - 15

Step-by-step explanation:

To find the product of two binomials, we could use the FOIL method.

First

Outer (Outside)

Inner (Inside)

Last

(3x + 5)(2x - 3) = (3x)(2x) + (3x)(-3) + (5)(2x) + (5)(-3) = 6x² - 9x + 10x - 15 = 6x² + x - 15

So the product of the two binomials would be 6x² + x - 15.

I hope you find my answer and explanation to be helpful. Happy studying.

3 0
3 years ago
At a glassworks, 60 pounds of composite glass is required to produce 15 pounds of glass. How many pounds of composite are
aleksandr82 [10.1K]
Ngl I think it’s 20 because 15 is 5x3 but 60 divided by 3=20 lmk if I’m wrong
3 0
3 years ago
Other questions:
  • What is the value of time, t, for the given values of distance, d, and rate, r?
    15·1 answer
  • The aquarium holds 150 liters of water. How many milliliters is this?
    10·2 answers
  • It takes 45 minutes for 4 people to paint 5 walls . How many minutes does it take 6 people to paint 4 walls?
    9·2 answers
  • I need this ASAP! When Isabel began her book-selling business, she stored her inventory in her garage. Now that her business has
    8·1 answer
  • Help asap plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
    10·1 answer
  • does anyone have all the answers to the 8th grade math DRC interim for vermillion parish. bc I'm here stuck pls help. session 1
    9·2 answers
  • I need help ASAP please I’m giving brainliest!
    14·2 answers
  • Please help............
    9·1 answer
  • A trampoline is on sale for 50% off. What was the original price if the sale price is $31?
    6·2 answers
  • Please help i’m failing this class so bad
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!