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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:

7.8 * 10^{10} is scientific notation of 78 billion

Step-by-step explanation:

For scientific notation , follow the following notation:

a * 10^{b} -------->(equation 1)

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In standard form

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or

a = 7.8

As decimal point move 10 places from right to left, therefore

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Put the value of 'a' and 'b' in (equation 1)

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