Question
In: Statistics and Probability
Performance of a process to turn steel shafts is being evaluated. The shafts are identified as...
Performance of a process to turn steel shafts is being evaluated. The shafts are identified as either pass or fail the inspection. A sample of 10 shafts will be inspected and the probability that any single shaft is identified as bad and fail is P=0.2. What is the probability that at least 2 shafts are considered bad?
Solutions
orchestra answered 2 years agoRelated Solutions
Suppose that 27% of all steel shafts produced by a certain process are nonconforming but can...
Suppose that 27% of all steel shafts produced by a certain
process are nonconforming but can be reworked (rather than having
to be scrapped).
(a)
In a random sample of 167 shafts, find the approximate
probability that between 30 and 54 (inclusive) are nonconforming
and can be reworked.
(b)
In a random sample of 167 shafts, find the approximate
probability that at least 48 are nonconforming and can be
reworked.
The diameters of steel shafts produced by a certain manufacturing process should have a mean diameter...
The diameters of steel shafts produced by a certain
manufacturing process should have a mean diameter of 0.255 inches.
The diameter is known to have a standard deviation of 0.0001 inch.
A random sample of 10 shafts was performed and the average diameter
was 0.2545 inch.
a. Set up appropriate hypotheses on the mean
b. Test these hypotheses using α = 0.05 and α = 0.1. What are
your conclusions?
c. Find the P-value for this test.
d. Construct a...
The diameters of steel shafts produced by a certain manufacturing process should have a mean diameter...
The diameters of steel shafts produced by a certain
manufacturing process should have a mean diameter of 5.5 inches.
The diameter is known to have a standard deviation of 0.9 inches. A
random sample of 30 shafts.
(a) Find a 90% confidence interval for the mean diameter to
process.
(b) Find a 99% confidence interval for the mean diameter to
process.
(c) How does the increasing and decreasing of the significance
level affect the confidence interval? Why?
Please explain and...
The diameters of steel shafts produced by a certain manufacturing process should have a mean diameter...
The diameters of steel shafts produced by a certain
manufacturing process should have a mean diameter of 0.218 inches.
The diameter is known to have a standard deviation of = 0.0003
inch. A random sample of 40 shafts has an average diameter of
0.2455 inches.
a/ Test these hypotheses using α= 0.02, α= 0.05, and α= 0.09
b/ Comparing the data above. Does the results of your hypothesis
testing change when you changed α? Explain.
Please show your work and...
Discuss a performance appraisal process on which you or someone was evaluated for work performance. Stay...
Discuss a performance appraisal process on which you or someone
was evaluated for work performance. Stay as even-handed as possible
and discuss what you think were the (a) “positives” of the system,
(b) the “negatives” of the system, and (c) how you would reform the
system using what you know from human resources and the performance
appraisal process.
A new production process is being contemplated for the manufacture of stainless steel bearings. Measurements of...
A new production process is being contemplated for the
manufacture of stainless steel bearings. Measurements of the
diameters of random samples of bearings from the old and new
processes produced the following data (all in mm): Old
Old
New
16.3
15.9
15.9
16.2
15.8
16.0
16.2
15.8
16.1
16.1
16.0
16.1
15.7
15.8
15.8
16.0
15.9
16.2
16.1
15.9
16.3
15.7
16.1
16.2
15.8
15.8
15.7
15.8
15.8
16.2
15.7
16.3
.
A. Can you conclude that the variances between...
2. What is a cost center and how is its performance evaluated?
2. What is a cost center and how is its performance
evaluated?
When the performance of a manger is evaluated the type of responsibility center is a factor...
When the performance of a manger is evaluated the type of
responsibility center is a factor (cost, profit or investment
center). In an effort to ensure a favorable performance evaluation,
a manager may behave in a way that is inconsistent with the
organization's goals. What can an organization do to help ensure
goal congruence, i.e. that a manager is motivated to do what is
best for the organization, not just what's best for themselves
Evaluators must strive to gather data that are relevant to the program being evaluated.
Evaluators must strive to gather data that are relevant to the
program being evaluated. Any information collected should be
perceived by stakeholders as credible and trustworthy. It is true
that all types of data you collect to evaluate outcomes indeed have
some limitations. However, credibility can be improved by using
some specific procedures when collecting, examining, and
interpreting data. In this assignment, " As health
Evaluators " discuss some aspects of evidence
gathering that affect (positively) the credibility of the...
If management is being evaluated on their ability to manage a budget, what can they do...
If management is being evaluated on their ability to manage a
budget, what can they do to increase cash flow?
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