Question

m u sumpie, ur hamg 4 derective circuits in the sample? Justify the answer. 4. If the proportion of defectives in the sample is less than 9%, it is reasonable to conclude that the new process is better. True or false? Justify the answer. 5. If the proportion of defectives in the sample is only slightly less than 9%, the difference could well be due entirely to sampling variation, and it is not reasonable to conclude that the new process is better. True or false? Justify the answer. 6. If the proportion of defectives in the sample is a lot less than 9%, it is very unlikely that the difference is due entirely to sampling variation, so it is reasonable to conclude that the new process is better. True or false? Justify the answer. Problem No. 1.1 /10 pts. Each of the following processes involves sampling from a population. Define the population, and state whether it is tangible or conceptual. Breif explicit justification of the answers is required 1. A quality engineer needs to estimate the percentage of wallpaper rolls manufactured on a certain day that are defective. At 4:30 PM he samples the last 36 rolls to be manufactured. 2. A chemical process is run 23 times and the yield is measured each time. 3. Eleven welds are made with the same process, and the strength of each is measured. clinical trial to test a new drug that is designed to lower cholesterol, 48 people with high cholesterol levels were recruited to try the mew drug 5. The resistance of a certain resistor is measured six times with the same ohmmeter. oH 4. In a Show your explanations. Displaying only the final answer is not enough to get credit.

Answer 1

ANSWER:

1.A quality engineer needs to estimate the percentage of wallpaper rolls:

we have to obtained the percentage of wall paper rolls manufactured on a certain day that are defective is ,

Here,

In this case the population consists of all wall paper rolls manufactured in a day 1 actual physical objects is tangible.

2.. A chemical process is run 21 times and the yield is measured each time:

We have to obtained the run 21 times and yield is measured each time is ,

Here,

The population consists of all the values the might possible have been observed .It is Conceptual .

3. Eleven welds are made with the same process, and the strength of each is measured:

We have to obtained the welds are made with the same process, and the strength of each is measured is ,

Here,

The population consists all welds that could be made by that process .It is Conceptual .

4. In a clinical trial to test a new drug that is designed to lower cholesterol:

We have to obtained the clinical trial to test a new drug that is designed to lower cholesterol,48 people is,

Here,

The population consists all 48 people with high cholesterol level the population is conceptual .

5. The resistance of a certain resistor is measured five times with the same ohmmeter:

we have to obtained the  the resistance of a certain resistor is measured five times with the same ohmmeter is ,

Here,

The population consists of all measurement that could be made on that resistor with that ohmmeter ,it is a Conceptual.

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