Question
In: Statistics and Probability
3. A new training program says that it can improve worker productivity by 50 units per...
3. A new training program says that it can improve worker productivity by 50 units per hour. A test of 100 employees trained under the new program showed an average improvement of 51 units per hour and the standard deviation is known 5 units per hour.
Testing at a .05 level of significance what can we conclude? Hint two tailed test
Solutions
orchestra answered 2 years agoRelated Solutions
Beginning Workers 15 Beginning inventory = 50 Productive hours/worker/day = 7 Units per worker per month...
Beginning Workers
15
Beginning inventory =
50
Productive hours/worker/day =
7
Units per worker per month
40
Paid hours/worker/day =
8
Working days in month
20
Materials =
$1,800
Holding costs =
$550
Marginal cost of backorder =
$800
Hiring and training cost =
$500
Layoff costs =
$800
Straight time labor cost/hr.
$30
Chase Strategy
Jan
Feb
Mar
Apr
May
June
Demand
575
715
675
985
1,125
575
Beginning Inv.
50
35
0
5
20
15
Net Requirements
525...
A new program of imagery training is used to improve the performance of basketball players shooting...
A new program of imagery training is used to improve the
performance of basketball players shooting free-throw shots. The
first group did an hour imagery practice, and then shot 30 free
throw basket shots with the number of shots made recorded. A second
group received no special practice, and also shot 30 free throw
basket shots. The data are below. Did the imagery training make a
difference? Set alpha = .05.
Group 1: 15, 17, 20, 25 26, 27
Group...
A new program of imagery training is used to improve the performance of basketball players shooting...
A new program of imagery training is used to improve the
performance of basketball players shooting free-throw shots. The
first group did an hour imagery practice, and then shot 30 free
throw basket shots with the number of shots made recorded. A second
group received no special practice, and also shot 30 free throw
basket shots. The data is below. Did the imagery training make a
difference? Set alpha = .05.
Group 1: 15, 17, 20, 25 26, 27
Group...
Problem 1: A new program of imagery training is used to improve the performance of basketball...
Problem 1: A new program of imagery training is
used to improve the performance of basketball players shooting
free-throw shots. The first group did an hour imagery practice, and
then shot 30 free throw basket shots with the number of shots made
recorded. A second group
received no special practice, and also shot 30 free throw basket
shots. The data are
below. Did the imagery training make a difference? Set alpha =
.05.
Group 1: 15, 17, 20, 25 26,...
An investigation of the effectiveness of a training program to improve customer relationships included a pre-training...
An investigation of the effectiveness of a training program to
improve customer relationships included a pre-training and
post-training customer survey, 12 customers were randomly selected
to score the customer relationships both before and after the
training. The differences of scores are calculated as the
post-training survey score minus the pre-training survey score. The
sample mean difference of scores is 0.5. The test statistic is 1.03
for testing whether the population mean difference µD ≤ 0.
11. Based on the above...
A researcher developed a training program designed to improve memory retention. She applied this program to...
A researcher developed a training program designed to improve
memory retention. She applied this program to a population of
learning-disabled (LD) children in 2nd grade, where each
child received a moderately-intense (MI) and an intense (I) version
of the training program for 6 weeks. Afterwards, they were tested
with a standardized memory assessment. If she randomly selected
Child #5 to compare, which program version produced a better memory
score?
Intense
Moderately Intense
Child #
Score
Child #
Score
1
1...
To improve turnover (employees leaving your organization), you implemented a new training program company-wide about a...
To improve turnover (employees leaving your organization), you
implemented a new training program company-wide about a year ago.
However, you're not sure that the training is equally effective in
reducing turnover between your service department, sales
departments, and warehouse. To test this, you retrieved a list of
all current and former employees that have received the training
and created a dataset also recording their department. Conduct a
test of independence to investigate this.
Turnover: Department:
former warehouse
current service
current...
Mary wants to know if training with her program will improve runners’ times in the mile....
Mary wants to know if training with her program will
improve runners’ times in the mile. She compares 5 runners whom she
trains with 5 runners that receive standard instruction (38
points).
Improvement in time with Mary’s method in decrease in
seconds
Improvement in time without Mary’s method in decrease in
seconds.
30
20
34
25
39
35
50
20
30
25
Identify your mean, median, mode, and range for the
group that experienced Mary’s method (4 points).
Identify your...
Mary wants to know if training with her program will improve runners’ times in the mile....
Mary wants to know if training with her program will improve
runners’ times in the mile. She compares 5 runners whom she trains
with 5 runners that receive standard instruction.
Improvement in time with Mary’s method in decrease in
seconds
Improvement in time without Mary’s method in decrease in
seconds.
35
19
50
15
40
25
45
10
35
24
Present your data in graphical form. You pick the type of
graph
Calculate the effect size (if appropriate) and interpret...
To improve worker satisfaction a company institutes an exercise program for its workers. It measures 10...
To improve worker satisfaction a company institutes an exercise
program for its workers. It measures 10 randomly selected workers’
satisfaction levels before and then after the program is
instituted. Does the exercise program significantly improve their
worker's job satisfaction? State the hypotheses, check conditions,
compute test statistics, standardize and give degrees of freedom.
Include a sketch, state the p-value followed by your
conclusion.
Before
34
28
29
45
26
27
24
15
15
27
After
33
36
50
41
37...
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