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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 testfor quality. The product is put through a wear-and-tear test to determine the number of days it can last. If the product has a lifespan of less than26 days, it is considered defective. The table gives the sample data that a quality control manager collected., The point estimate of the population mean isand the point estimate of the proportion of defective units is

A company manufactures 2000 units of its flagship product in a day The quality control department takes a random sample of 40 units to testfor quality The produ class=

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Step 1

Given;

Required; Find the point estimate of the proportion of defective units

Step 2

Since the mean of the samples is given as;

[tex]32.3[/tex]

Defected pieces in the samples whose life span is less than 26 days = 2. That is 25 and 25.

Thus;

[tex]\frac{2}{40}=\frac{1}{20}=005[/tex]

Answer; The point estimate of the proportion of defective units is;

[tex]0.05[/tex]

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