A firm produces spherical beads. The diameter of these beads is approximately normally distributed with a mean of 5 mm and a standard deviation of 0.5 mm. d. If one strings 40 random beads together to make a bracelet, what is the probability that the total length of the bracelet is in the range from 19.5 cm to 20.5 cm? b. The firm sells the beads in packages of 40 beads together with a string, the length of which is also approximately normally distributed with a mean of 25.5 cm and a standard deviation of 0.4 cm. In order to be able to tie the string after putting all the beads on them, you need to have at least 5 cm of string left. Find the probability that a proper bracelet can be made with the content of a random package, using all 40 beads.
A firm produces spherical beads.
The diameter of these beads is approximately
distributed
d.
If one strings 40 random beads together to make a bracelet, what is the
b. The firm sells the beads in packages of 40 beads together with a string, the length of which is also approximately normally distributed with a mean of 25.5 cm and a standard deviation of 0.4 cm. In order to be able to tie the string after putting all the beads on them, you need to have at least 5 cm of string left. Find the probability that a proper bracelet can be made with the content of a random package, using all 40 beads.
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