Question
In: Statistics and Probability
A factory finds that, on average, 10% of the bulbs produced by a given machine will...
A factory finds that, on average, 10% of the bulbs produced by a given machine will be defective for certain specified requirements. If 8 bulbs are selected at random from the day's production of this machine, find the probability a.) exactly 2 will be defective. b.) that 2 or more will be defective and c.) that more than 5 will be defective.
Solutions
orchestra answered 1 year agoRelated Solutions
The average life of light bulbs produced by SABA Electric Co. is expected to be normally...
The average life of light bulbs produced by SABA Electric Co. is
expected to be normally distributed with the mean service life of
950 hours and standard deviation of 100 hours. A random sample of
100 bulbs is tested and it has a mean life of 910 hours. Can
researcher conclude that the mean service life of the bulbs is less
than the expectation? H0 is null hypothesis, and Ha is alternative
hypothesis.
Which one of the following is a...
It is known that of the articles produced by a factory, 20% come from Machine A,...
It is known that of the articles produced by a factory, 20% come
from Machine A, 30% from Machine B, and 50% from Machine C. The
percentages of satisfactory articles among those produced are 95%
for A, 85% for B and 90% for C. An article is chosen at random. (a)
What is the probability that it is satisfactory? (b) Assuming that
the article is satisfactory, what is the probability that it was
produced by Machine A? (c) Given that...
Average life of light bulbs produced by SABA Electric Co. is believed to be normally distributed...
Average life of light bulbs produced by SABA Electric Co. is
believed to be normally distributed with the mean service life of
1200 hours and a standard deviation of 78 hours. A random sample of
169 bulbs is tested and it has a mean life of 1100 hours. Can we
conclude that the mean service life of the bulbs is less than the
expectation at 98% level of confidence?
a. Yes. The mean service life of the bulbs is less...
Average life of light bulbs produced by SABA Electric Co. is believed to be normally distributed...
Average life of light bulbs produced by SABA Electric Co. is
believed to be normally distributed with the mean service life of
1200 hours and a standard deviation of 78 hours. A random sample of
169 bulbs is tested and it has a mean life of 110 hours. Can we
conclude that the mean service life of the bulbs is less than the
expectation at 98% level of confidence?
a. Yes. The mean service life of the bulbs is less...
A manufacturer of light bulbs claims that the average lifetime of one of their bulbs is...
A manufacturer of light bulbs claims that the average lifetime
of one of their bulbs is more than 900 hours. A consumer advocacy
group wants to test this claim. They obtained a simple random
sample of 61 bulbs and timed how long they took to burn out. They
obtained a sample mean of 907.5 hours with a standard deviation of
16.5 hours. It’s your job to test the claim at the 5% significance
level and determine if the manufacturer is...
A machine in a factory has an error rate of 10 parts per 100. The machine...
A machine in a factory has an error rate of 10 parts
per 100. The machine normally runs 24 hours a day and produces 30
parts per hour. Yesterday the machine was shut down for 4
A) Machine A produces an average of 10% of defective parts. Machine B produces on average...
A) Machine A produces an average of 10% of defective parts.
Machine B produces on average twice as many defective parts as
machine A. Machine C produces on average three times more defective
parts than machine B. Here are 8 bags of parts from A, 2 bags of
parts from B and 1 bag of coins from C. We randomly take a coin
from one of the bags itself also taken at random. She is
defective.
1. What is the...
San Tan Company manufactures light bulbs. Once produced, the bulbs are packaged and sold to wholesalers...
San Tan Company manufactures light bulbs. Once produced, the
bulbs are packaged and sold to wholesalers for distribution to
grocery stores and large retailers like Walmart. The following
costs were incurred by San Tan Company during April:
Electricity for factory
$
14,700
Labor
29,900
Rent on factory
21,900
Insurance on factory
1,200
Glass for bulbs
54,100
Cardboard for packaging
5,900
Compute the Manufacturing overhead cost for San Tan Company.
Compute the Direct materials cost for San Tan Company.
Compute the...
A bag of 30 tulip bulbs contains 13 red tulip bulbs, 10 yellow tulip bulbs, and...
A bag of 30 tulip bulbs contains 13 red tulip bulbs, 10 yellow
tulip bulbs, and 7 purple tulip bulbs. Suppose two tulip bulbs are
randomly selected without replacement from the bag.
(a) What is the probability that the two randomly selected tulip
bulbs are both red?
(b) What is the probability that the first bulb selected is red
and the second yellow?
(c) What is the probability that the first bulb selected is
yellow and the second red?
(d)...
write a program that finds the average of all positive, non-zero values found in a given...
write a program that finds the average of all positive, non-zero
values found in a given array of doubles and prints that to the
console. Any negative or zero values do not contribute to the
average. The program should use the array provided in the code, and
you may assume that it has already been populated with values. The
results should be printed out to the console in the following
format:
“Average: ”<<average
value>>
Values denoted in “<< >>” represent...
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