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RSB [31]
2 years ago
7

An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 260260 engin

es and the mean pressure was 44 lbs/square inch. Assume the variance is known to be 0.640.64. If the valve was designed to produce a mean pressure of 4.14.1 lbs/square inch, is there sufficient evidence at the 0.020.02 level that the valve does not perform to the specifications? State the null and alternative hypotheses for the above scenario.
Mathematics
2 answers:
Scrat [10]2 years ago
5 0

Answer:

u= 4.7

u< 4.7

NeTakaya2 years ago
5 0
The correct answer is U = 4.7.
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Answer:

43 / 8 = 5.37

Step-by-step explanation:

each person will get around 5 pieces of candies...

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2 years ago
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1.In the diagram of circle M shown, various points are located on the circle as shown. 
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dalvyx [7]

Answer:

(a)|MA|, |MB| and |MC|

(b) |BD|

(c) |BC|

Step-by-step explanation:

An adapted diagram of this question is attached. You can vary the labelled letters as required.

<u>Definition</u>

  • A <u>radius </u>is a line drawn from the center of a circle to its circumference.
  • A <u>segment </u>is a line that connects two points.
  • A <u>diameter</u> is a chord which passes through the center of the circle.
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By these definitions:

(a)Segments that are radii of this circle.

We have: |MA|, |MB| and |MC|

(b)Segment that is a diameter of this circle.

|BD|

(c)A chord of this circle that is not a diameter.

|BC|

3 0
3 years ago
Which is the completely factored form of 12x3 – 60x2 4x – 20? 4(3x2 – 1)(x – 5) 4x(3x2 1)(x – 5) 4x(3x2 – 1)(x 5) 4(3x2 1)(x – 5
Neporo4naja [7]

The factors of the polynomial are \rm  4(3x^2 + 1)(x-5).

<h3>Factorization;</h3>

Factorization is nothing but writing a number as the product of smaller numbers.

Given

Polynomial;\rm 12x^3 - 60x^2 + 4x -20

To find the factorization the polynomial equates the equation with zero following all the steps given below.

Then,

The factor of the polynomial is;

\rm 12x^3 - 60x^2 + 4x -20\\\\ 12x^3(x-5)+4(x-5)\\\\(12x^3+4)(x-5)\\\\ 4(3x^2 + 1)(x-5)

Hence, the factors of the polynomial are \rm  4(3x^2 + 1)(x-5).

To know more about factorization click the link given below.

brainly.com/question/17595467

4 0
2 years ago
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Answer:

11

Step-by-step explanation:

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3 years ago
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Please answer the question 3x &lt; 18
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