Question

A personal computer manufacturer buys 32% of its chips from
Japan and the rest from the United States. Of the Japanese chips,
1.6% are defective, and 1.1% of the American chips are
defective.

Find the probability that a chip is defect-free. (Round your answer
to four decimal places.)

Answer #1

a. A personal computer manufacturer buys 36% of its chips from
Japan and the rest from the United States. Of the Japanese chips,
1.7% are defective, and 1.4% of the American chips are
defective.
Find the probability that a chip is defective and made in Japan.
(Round your answer to four decimal places.)
b. A personal computer manufacturer buys 38% of its chips from
Japan and the rest from the United States. Of the Japanese chips,
1.5% are defective, and...

A personal computer manufacturer buys 39% of its chips from
Japan and the rest from the United States. Of the Japanese chips,
1.6% are defective, and 1.1% of the American chips are
defective.
Find the probability that a chip is defective. (Round your answer
to four decimal places.)

A personal computer manufacturer buys 39% of its chips from
Japan and the rest from the United States. Of the Japanese chips,
1.6% are defective, and 1.1% of the American chips are
defective.
Find the probability that a chip is defective. (Round your answer
to four decimal places.)

A manufacturer of
computer chips claims that the probability of a defective chip is
0.004. The manufacturer sells chips in batches of 600 to major
computer companies.
a.
How many defective chips would you expect in a batch?
(Round the final answer to 2 decimal places.)
Number of
chips
b.
What is the probability that none of the chips are defective in a
batch? (Round the final answer to 4 decimal
places.)
Probability
c.
What is the probability at least...

The chips of a computer manufacturer are supplied by 2
companies: 35% from A, and 65% from B. Of those supplied by A, 1%
are defective; by B, 2% are defective.
a. Construct the Tree Diagram of the situation.
b. A chip is randomly selected. Find the probability that the
chip is defective.
c. Given a chip is defective. Find the probability that the chip
is from A.

A computer chip manufacturer tests a random sample of 500 chips
in a 4000 lot and finds 32 defective units.
a) Find a 95% confidence interval to estimate the proportion of
defective units and calculate the margin of error for your
estimate.
b) Find a 95% confidence interval to estimate the total number of
defective units and calculate the margin of error for your
estimate.
Answers:
a. [0.04393,0.08407], m.e. = 0.02, b. [175,337], m.e. = 81

A lot of 106 semiconductor chips contains 29 that are defective.
Round your answers to four decimal places (e.g.
98.7654).
a) Two are selected, at random, without replacement, from the
lot. Determine the probability that the second chip selected is
defective.
b) Three are selected, at random, without replacement, from the
lot. Determine the probability that all are defective.

A sample of 1800 computer chips revealed that 41% of the chips
do not fail in the first 1000 hours of their use. The company's
promotional literature states that 44% of the chips do not fail in
the first 1000 hours of their use. The quality control manager
wants to test the claim that the actual percentage that do not fail
is different from the stated percentage. Find the value of the test
statistic. Round your answer to two decimal...

A sample of 1500 computer chips revealed that 27% of the chips
do not fail in the first 1000 hours of their use. The company's
promotional literature states that 25% of the chips do not fail in
the first 1000 hours of their use. The quality control manager
wants to test the claim that the actual percentage that do not fail
is different from the stated percentage. Find the value of the test
statistic. Round your answer to two decimal...

A sample of 900 computer chips revealed that 68%68% of the chips
fail in the first 1000 hours of their use. The company's
promotional literature states that 67% of the chips fail in the
first 1000 hours of their use. The quality control manager wants to
test the claim that the actual percentage that fail is different
from the stated percentage. Find the value of the test statistic.
Round your answer to two decimal places.

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