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SVETLANKA909090 [29]
3 years ago
9

Trica made a 56% on her science test. If she got 14 problems correct, how many qestions were on the test

Mathematics
1 answer:
Wittaler [7]3 years ago
3 0

Answer:25

Step-by-step explanation: 14/.56

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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
IgorLugansk [536]

Answer:

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.

Step-by-step explanation:

Given that;

mean x" = 5.4

standard deviation σ = 0.7  

n = 6

Null hypothesis H₀ : μ = 5.0  

Alternative hypothesis H₁ : μ > 5.0    

∝ = 0.025    

now,

t = ( 5.4 - 5.0) / ( 0.7/√6) = 0.4 / 0.2857 = 1.4

degree of freedom df = n-1 = 6 - 1 = 5

T critical = 2.571

Therefore; t < T critical,

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.

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3 years ago
Which is the greatest measure of the given data? 4, 8, 4, 7, 5, 4, 9, 146, 6, 4, 13, 8, 11, 6, 6, 5 *
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Step-by-step explanation:

But the answer is 3. Median the median is 146.

Mode is 142

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3 0
3 years ago
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Last year, Austin opened an investment account with $6800. At the end of the year, the amount in the account had increased by 6.
erica [24]

6800*0.065=442

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5 0
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Need help please , I know the basic math. how do I solve this?
Mkey [24]
(7/15)/(3/5)
easy
(a/b)/(c/d)=(a/b)(d/c)
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(7/15)/(3/5)=(7/15)(5/3)=35/45=7/9

answer is C
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