Bolts are produced by a certain process. The diameters of the bolts have mean 12

Question

Bolts are produced by a certain process. The diameters of the bolts have mean 12cm and standard deviation 0.8cm. The bolts are packaged randomly into packets of 100 bolts. Which of the following is true about the mean diameter of a packet of 100 bolts? O The mean diameters of the packets of 100 bolts have a mean of 12cm and a standard deviation of 0.008cm. O The mean diameters of the packets of 100 boits have a mean of 12cm and a standard deviation of 0.08cm. O The mean diameters of the packets of 100 bolts have a mean of 0.12cm and a standard deviation of 0.08cm. O The mean diameters of the packets of 100 bolts have a mean of 1.2cm and a standard deviation of 0.8cm. O The mean diameters of the packets of 100 bolts have a mean of.12cm and a standard deviation of 0.008cm.

Explanation / Answer

Mean diameter of packets of 100 bolts have mean of 12 cm and a standard deviation of 0.08 cm

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