A report claims that 46​% of​ full-time college students are employed while attending college. A recent survey of 60 ​full-time students at a state university found that 28 were employed. Use the​ five-step p-value approach to hypothesis testing and a 0.05 level of significance to determine whether the proportion of​ full-time students at this state university is different from the national norm of 0.46. find the t statistic find the p value find the critical value

Let X represent the weight of the students at a university. Suppose X has a mean of 75 kg and a standard deviation of 10 kg. Among 100 such randomly selected students from this university, what is the approximate probability that the average weight of this sample (X100) lies between

(a) 74 and 75 kg

(b) greater than 76 kg

(c) less than 73 kg

Assume that the sample size(N) is large enough for the CLT (Central Limit Theorem) to be applicable.

Essay 750 words about

"Little Albert and Classical Conditioning"

The original article by Watson and Rayner was published in the Journal of Experimental Psychology in 1920. There is a reprint of the original article which can be found in the South University Online Library. Here is the reference for the article reprint: Watson, J. B., & Rayner, R. (2000).

There have been several classic experiments to study and describe classical conditioning; one of the more famous is the Little Albert experiment. Over the years, the experiment has lost some of its validity due to numerous interpretations by several introductory psychology textbooks. It is, therefore, beneficial to go back to the original (or primary) source and read what the authors of the experiment themselves had to say.

Read the article and answer the following questions:

In the study, what are unconditioned stimulus (US), conditioned stimulus (CS), and conditioned response (CR)?

Explain the concept of generalization in regards to Watson and Rayner's ability to condition Albert to react to different stimuli such as masks, other animals, and a fur coat?

Using examples from the study, explain the concept of extinction

1. Fidelity Investments is a Boston institution that is “among the most diversified financial services companies in the world, offering a full range of product solutions for individual investors, employers, institutions, and intermediaries. Fidelity has $6.8 billion in assets under administration, including managed assets of $2.4 billion, as of December 31, 2018”
   Fidelity operates service centers in various cities that customers can call to get answers to questions about their investments. Previously, the company studied the distribution of time required for each call. It found that calls are normally distributed, with a mean equal to 540 seconds. The call center manager in Provo, Utah, has selected a random sample of 50 calls and wants to determine whether the mean call time is now less than 540 seconds after a training program given to call center employees. She can test whether the time has decreased by using the following steps:
   1. Set up a hypothesis
   2. Set up a suitable significance level
   3. Determine a suitable test statistic
   4. Determine the critical region
   5. Perform computations
   6. Make decision to accept or reject hypothesis
2. Founded in 1846, Hood is a Charlestown company with more than $2 billion in annual sales. The company has 15 plants and uses filling machines for its gallon milk containers. There is some variation in the actual amount of milk that goes into the container. The machine can go out of adjustment and put a mean amount either less or more than one-gallon containers. To monitor the filling process, the production manager for the Sacramento plant selects a simple random sample of 16 gallons each day. He can test whether the machine is still in adjustment using the following steps:
   1. Set up a hypothesis
   2. Set up a suitable significance level
   3. Determine a suitable test statistic
   4. Determine the critical region
   5. Perform computations
   6. Make decision to accept or reject hypothesis
3. The August Brothers Oil Company is an oil delivery company based out of East Boston. The company has been in business for over 15 years. The company delivers home heating oil and does oil burner repairs. The company has an opportunity to invest its profits into either increasing its oil delivery business or oil burner repair business. Last year the company made a profit on average of 21 cents for every gallon of heating oil it sold, and $150.00 profit on every burner it repaired. How can you use hypothesis testing to test these two disparate operations and decide where to invest the company’s profit?

Reference

Database Systems - Security and Administration

Jak University is a leading higher education institution that is well known throughout Malaysia for its academic achievements. It is proven that this university exists in all major cities in Malaysia. Jak University is also in Kuala Lumpur and as a management center, has 100 thousand students and 10 thousand lecturers spread across several branch campuses. The learning process is done face-to-face and online. Each campus in each city can join virtual classes, so that the data from each campus can be connected to one another. Academic data from each campus branch is stored in files and then sent to the Center in Kuala Lumpur and each campus can also share data (share files). However, after this university has been operating for several years, the number of lecture transactions has increased, so that the volume of data stored in files is getting bigger. So in day-to-day operations often experience problems access to data, both when sending data and when accessing data from other campuses.

Question:

1. The University of Jak uses a file-based approach in managing its academic data. But over time began to experience problems with data accessibility.
You were appointed as a Database Consultant to change the data management process at the University of Jak using a database approach. You need to explain to the Management in Kuala Lumpur so that the leaders can understand and be sure about the proposed application of the database approach, where this approach can support operational performance in data management. Explain what is meant by a file-base approach and a database approach. Also describe the advantages and disadvantages of each.

2. If the management approves the proposal, then you need to design a good database architecture. You can choose a Three-Tier Client-Server architecture.

3. The hardware running the DBMS must continue to operate even if one of the hardware components is damaged due to various factors. One solution is to implement RAID technology. Describe what RAID technology is. Also explain by providing examples of how each RAID level is implemented.

home / study / business / finance / finance questions and answers / Please Give Us One Example From Your Research, Work, Or Personal Life Discussing The Basic ... Question: Please give us one example from your research, work, or personal life discussing The basic types... Please give us one example from your research, work, or personal life discussing Different methods of capital budgeting rationalization such as NPV, IRR, and Payback

You are convinced that biology graduates from University X are smarter than chemistry graduates. What steps would you take to investigate this using the scientific method?

Discuss some of the challenges facing new graduates in seeking employment upon graduating from University and outline some of the things that you can do to overcome these challenges

A survey of 725 teenagers between the ages of 13 and 18 conducted by JA Worldwide/Deloitte &

Touche USA LLP found that 69% agree that people who practice good business ethics are more

successful than those who do not (source: “2007 Executive Summary: JA Worldwide/Deloitte Teen

Ethics Survey”).

a. Calculate the 90% confidence interval estimate for the true population proportion, p, given the survey

information.

b. What is the largest possible sample size needed to estimate the true population proportion, p, within

a margin of error of 0.02 with a confidence level of 95% if there was no prior knowledge concerning

the proportion of respondents who would agree with the survey’s question?

c. If the survey in part a had a margin of error of 0.04 percentage points, determine the level of

confidence that was used in estimating the population proportion if there was no prior knowledge

concerning the percentage of teenagers who would respond as they did.

d. A survey conducted at a Midwestern university and involving 1,500 students found that 68% had

taken out a student loan to help pay for the cost of their college education. A similar study at a

southeastern university in which 2,000 students were surveyed found that 47% had taken out a student

loan.(1.) Develop and interpret a 95% confidence interval estimate for the difference in the proportions of

students who have loans at these two universities.(2.)Using an alpha level of 0.05, test the hypothesis that there is no difference in the proportions of

students at these two universities who have loans. How does this test compare with the result you found

in part a?

e. The consistency of the diameters of wheel bearings is vital to the operation of the wheel. The

specifications require that the variance of these diameters be no more than 0.0015 centimeter squared.

The diameter is continually monitored by the quality-control team. Twenty subsamples of size 10 are

obtained every day. One of these subsamples produced bearings that had a variance of 0.00317

centimeter squared.

Conduct a hypothesis test to determine if the quality control team should advise management to stop

production and search for causes of the inconsistency of the bearing diameters. Use a significance level

of 0.05. (Use p-value approach!)