From the options given, the only option which would result on having a reduced error margin, is to increase the sample size.
<u>Recall</u><u> </u><u>:</u><u> </u>
<em>Margin of Error</em> = Zcritical × σ/√n
- Increasing the mean would have no impact on the margin of error as it is not a part of the factors which affects the margin of error value.
- Increasing the standard deviation, which is the Numerator will result in an increased margin of error value.
- By raising the confidence level, the critical value of Z will increase, hence widening the margin of error.
- The sample size, n being the denominator, would reduce the value of error margin.
Hence, only the sample size will cause a decrease in the margin of error of the interval.
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The characteristic that makes Harper a good candidate for LASIK is c. Her contact lens and glasses prescription has not changed in the past two years.
<h3>Why is Harper a good candidate for LASIK?</h3><h3 />
A good candidate for LASIK is one that is due to change their eye prescription/
As eye prescriptions are to be changed every 2 years, Harper would be a good candidate if she has not changed either her contact lens or prescription glasses.
Options for this question are:
a. She is not a risk-taker.
b. She has an autoimmune disease.
c. Her contact lens and glasses prescription has not changed in the past two years.
d. She is currently taking martial arts lessons.
e. She is unsure if she can afford to pay the surgery.
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Answer:
Pressure
Explanation:
As per PV=nRT, we know that if volume, quantity and temperature are the kept constant the only thing that changes is pressure.
The correct answer should be C. The temperature at which the solid state turns into a liquid state.
A doesn’t make sense (a solid needs to melt, not a liquid)
B is evaporation I would think.
