A 130 pound person climbs a 120pound ladder that is 30 f t long. The ladder leans against a frictionless wall and makes an angle of  with the ground. a) Find the force of the ground on the ladder when the person is one third of the way up the ladder .b) When the person gets two thirds of the way up, the bottom of the ladder starts to slip. What is between the ladder and ground?

"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"

CHAPTER 10a EXERCISES

1. Suppose we perform a valid
1-sided F-test on the populations of male and female Angus beef cattle. The sample of males has a higher standard
deviation. We correctly compute the
p-value to be 0.068. If we are doing
this F-test at α = 0.05, what is our conclusion?

2. A bolt manufacturer is using
a hypothesis test with α = 0.01 to see if the diameter of
their 0.75 cm diameter bolts are being manufactured properly. The goal is to have the average bolt diameter
be 0.75 ± 0.0075 cms. (Thus, a 2-sided test with difference of 0.0075 is used.)
They know that the standard deviation of the 0.75 cm bolts is 0.028 cms. Use Minitab to compute the sample size
necessary to achieve a power of 0.9.
According to the Power Curve, ifa
difference of 0.0025 must be used, what is the approximate power of the test
using this sample size? Copy and paste
or attach your Minitab output to your paper.

3. In a contentious shareholder
lawsuit, a critical claim by the plaintiffs is that average CEO tenure for companies
of at least $2 billion in market cap is 9 years. A survey of 36 such companies had a sample
mean of 7.90 with a sample standard deviation of 6.45. Use this sample to test at the 5% level
whether the average CEO tenure is less than 9 years. Do the test by hand (using Minitab just for
the p-value) and confirm your results with Minitab. Interpret your results and state your
conclusion in terms of the data.

4. Statistical significance, Power, and Practical
significance – A Big Data Issue: As a
marketing associate for a sports apparel company, we see that, in 2011, 44.2%
of our customers checked reviews of our new products on social media sites
before buying. This year, to see if that
percentage has increased, we use an email campaign to survey our recent
customers. Of 39,994 respondents, 17,885
said that, before buying, they checked reviews of the product they purchased on
social media.
a. Based on this survey, what is
the point estimate of the proportion of our customers who check social media
reviews?
b. Test whether the increase
indicated by this point estimate is statistically significant?
c. Compute a 95% confidence
interval for the percentage of customers using social media before buying. What do we think about it?
d. What is the power of the test
in part b?
e. Based on this analysis, would
you recommend any changes in our social media marketing approach?

"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"

In this assignment, students are required to identify a recent Enterprise Systems

implementation in an organisation and write a 2,500 to 2,600-word report and create a

5-6 minute PowerPoint presentation on the following issues depicted in the chosen

case study. (From the Insert tab, choose Insert Audio. Keep the narration for each

slide under 40 seconds).

1. For any large firm or enterprise describe the nature of the Enterprise Systems that

the organisation adopted to improve or maintain operational efficiency, improve

customer / supplier intimacy, improve decision making, create new products,

services, and business models (i.e. to innovate), and to gain a competitive

advantage:

2. Identify all risks including the dependencies on the firm’s supply chain that could

affect or disrupt operations on the supply chain.

3. Provide an assessment of how successful the adoption of the Enterprise Systems

was to reduce friction on the supply chain, i.e. to maintain operational efficiency,

and a discussion of any success metrics that were used.

Attachments:

babu.pdf

"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"

How to develop my voice

Click here for more on this paper…….
Click here to have a similar A+ quality paper done for you by one of our writers within the set deadline at a discounted

"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"