Question
In: Statistics and Probability
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
41
39
21
20
37
Solutions
orchestra answered 1 year agoRelated Solutions
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
workers 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...
A company institutes an exercise break for its workers to see the effect on job satisfaction,...
A company institutes an exercise break for its workers to see
the effect on job satisfaction, as measured by a questionnaire that
assesses workers’ satisfaction. Scores for 10 randomly selected
workers before and after the implementation of the exercise program
are shown in the following table. Determine if there is a
significant increase in worker job satisfaction after the
implementation of the exercise program using a 5% level of
significance.
Job Satisfaction Index Table
WORKER NUMBER
BEFORE
AFTER
1
34...
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
A company hopes to improve customer satisfaction, setting as a goal no more than 9 %...
A company hopes to improve customer satisfaction, setting as a
goal no more than 9 % negative comments. A random survey of 320
customers found only 15 with complaints. a) Create a two-sided 95
% confidence interval for the true level of dissatisfaction among
customers. b) Does this provide evidence that the company has
reached its goal? Using your confidence interval, test an
appropriate hypothesis and state your conclusion. a) The 95 %
confidence interval for the true level of...
A researcher conducts an independent-measures study examining the effectiveness of a group exercise program at an...
A researcher conducts an independent-measures study examining
the effectiveness of a group exercise program at an assisted living
facility for elderly adults. One group of residents is selected to
participate in the program, and a second group serves as a control.
After 6 weeks, the researcher records a combined score measuring
balance and strength for each individual. The data are as follows:
(9 POINTS)
Control
Exercise
n = 10
n = 15
M = 12
M = 15.5
SS =...
A researcher conducts an independent-measures study examining the effectiveness of a group exercise program at an...
A researcher conducts an independent-measures study examining
the effectiveness of a group exercise program at an assisted living
facility for elderly adults. One group of residents is selected to
participate in the program, and a second group serves as a control.
After 6 weeks, the researcher records a combined score measuring
balance and strength for each individual. The data are as
follows:
Control Exercise
n1 =
10
n2
= 15
M1 =
12
M2 = 15.5
...
A researcher conducts an independent-measures study examining the effectiveness of a group exercise program at an...
A researcher conducts an independent-measures study examining
the effectiveness of a group exercise program at an assisted living
facility for elderly adults. One group of residents is selected to
participate in the program, and a second group serves as a control.
After 6 weeks, the researcher assessed physical fitness of each
participant.
The data are as follows: Exercise Group: Control Group: n = 15 n
= 15 M = 37 M = 34 SS = 230 SS = 160 A....
A company hopes to improve customer satisfaction, setting as a goal no more than 5% negative...
A company hopes to
improve customer satisfaction, setting as a goal no more than 5%
negative comments. A random survey of 350 customers found only 10
with complaints. Does this provide evidence that the company has
reached its goal of getting less than 5% negative comments?
a) What is the sample
statistic? Use correct notation. Round to three decimal places.
b) Write the null and
alternative hypothesis. (Hint: The null is 5% or 0.05. Also, think
carefully about the inequality...
A manufacturing company currently employs 50 workers. It takes a worker an hour to make a...
A manufacturing company currently employs 50 workers. It takes
a worker an hour to make a unit and workers are paid $20/hour. The
material cost is $5/unit. Each worker works 160 hours/week to meet
the current monthly demand of 8,000 units. Due to the change of
economy, the manufacturing company predicted that the demand has
60% chance of increasing 50% from the previous month and 40% chance
of remaining the same for the next three months. The company is
considering...
Statistical Probability. A recent study measures customer satisfaction calls and the number of profits a company...
Statistical Probability.
A recent study measures customer satisfaction calls and the
number of profits a company made. In order to improve the numbers
and satisfaction of customers, the leadership team assigns
employees into two types of groups. The first group is video
conference support (VCS) and the second group is telephone support
(TS). All groups have same amount of calls they receive for support
purposes.
Over time, leadership observes that 72% of all customers called
into their VCS. Out of...
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