A company manufactures 2,000 units of its flagship product in a day. The quality control department takes a random sample of 40
units to test for quality. The product is put through a wear-and-tear test to determine the number of days it could last. If the product has a lifespan of less than 26 days, it is considered defective. The table gives the sample data that a quality control manager collected.
What is the population mean and point estimate for the mean of this sample?
A.
There is insufficient data to calculate the population mean. The point estimate = 32.3.
B.
The population mean = 32.3. There is insufficient data to calculate the point estimate for the mean.
C.
There is insufficient data to calculate the population mean. The point estimate = 34.48.
D.
The population mean = 35.76. There is insufficient data to calculate the point estimate for the mean.
E.
The population mean = 36.04. There is insufficient data to calculate the point estimate for the mean.
What is the population mean and point estimate for the mean of this sample?
A.
There is insufficient data to calculate the population mean. The point estimate = 32.3.
B.
The population mean = 32.3. There is insufficient data to calculate the point estimate for the mean.
C.
There is insufficient data to calculate the population mean. The point estimate = 34.48.
D.
The population mean = 35.76. There is insufficient data to calculate the point estimate for the mean.
E.
The population mean = 36.04. There is insufficient data to calculate the point estimate for the mean.
2 answers:
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Answer: Ron take approximately 4.2 hours to make 100 crusts alone.
Step-by-step explanation:
Since we have given that
Number of hours taken by Ron before Harold = 1.2 hours
Number of hours taken by Ron and Harold together = 1.8 hours
We need to find the number of hours taken by Ron alone i.e. 'x'.
Let number of hours taken by Harold alone be '1.2-x'.
Let work done by Ron alone =
Work done by Harold =
According to question, we get that
x-1.2 does not satisfied with x = 0.5 so, x = 4.2
Hence, Ron take approximately 4.2 hours to make 100 crusts alone.