A medical researcher wants to compare the pulse rates of smokers and non-smokers. He believes that the pulse rate for smokers and non-smokers is different and wants to test this claim at the 0.02 level of significance. A sample of 56 smokers has a mean pulse rate of 88, and a sample of 39 non-smokers has a mean pulse rate of 86. The population standard deviation of the pulse rates is known to be 8 for smokers and 8 for non-smokers. Let μ1 be the true mean pulse rate for smokers and μ2 be the true mean pulse rate for non-smokers.

Step 1 of 5 : State the null and alternative hypotheses for the test.

The conformity of serial production parts is verified using a non-destructive test.
However, the test is not 100% reliable. Indeed, previous statistics show that 12% of compliant parts are classified as non-compliant, and 10% of non-compliant parts are classified as compliant.
We also know that 20% of the production parts are really non-compliant.
This test is used to verify the compliance of a sample of 41 randomly selected parts in this production
a) Calculate the probability that 7 pieces of the sample are classified as non-compliant by the test.
b) Given that 7 parts in the sample are classified as nonconforming by the test, what is the probability that in fact there are exactly 11 nonconforming parts?

Overview

In this lab, you will design an Enhanced Entity Relationship (EER) diagram to improve on the database design that you have worked on in the previous weeks.

The new design will include additional improvements such as:

1. Inheritance Relationships
2. Constraints
3. Union Types

A clear and well-documented explanation of all your modifications and the EER diagram.

can you please give me an example of how to start this or what am i supposed to do!!!

Class: Healthcare Policy

Give some examples of the statement, “Common disorders commonly occur and rare ones rarely happen.” What are the implications of this statement for the ratio of generalist to specialist physicians in the United States? In addition, find one recent article about the ratio of generalist to specialist physicians using the ProQuest database in LIRN (see eResources) and write an informative summary of what you found. (400 words)

An agency wants to examine the distribution of wages F(x) of graduates with bachelor degrees. For that purpose they receive from US Census Bureau database a sample X₁,…, X_n of   10,000 numeric records of wages for randomly chosen graduates.

Find the algorithm to provide an interval of wages which cover the 50% central part of distribution F(x) with approximate confidence 95%. How can you evaluate the accuracy of that estimation?

- Explain what a business environment is and what factors within the environment put pressure on the business.

- Identify the five forces of Porter’s competitive forces model, and explain how the Internet impacts each one.

- Explain the six issues that can be addressed using the database approach.

- Differentiate among local area networks, wide-area networks, and value-added networks

- Discuss the advantages of voice over IP for organizations.

Read “Scuba: Diving into Data at Facebook." Consider Facebook and other social media platforms when answering the following topic questions:

• What challenges do they face from a data handling perspective?
• What database issues has Facebook had in the past? How do they handle them?
• What are their current efforts to maintain peak performance on their site?
• Are these performance efforts unique to social media? Why?

Key roles for a successful analytics project. Select a data analytics of your choice and discuss how the following roles add value to this initiative: Business User, Project Sponsor, Project Manager, Business Intelligence Analyst, Database Administrator, and Data Engineer. Again, please note that you will discuss specific activities that each of these roles may perform on a data analytics project that you select.

Need 500 discussion

Using Node.js as a Webserver

1. How do you modify a webserver.js code to include your name and date? Please include code.

2. Create a MongoDB database for the following group that includes member names and contact information and Include code: Gourp member exapmples: Pete 912-555-6666; Sam 912-111-3333; Mary 678-111-1111; and April 912-690-1111

Using your downloaded DBMS (MS SQL Server or MySQL), write SQL queries that inserts at least three rows in each table.

1. 1. For the On-Demand Streaming System,
      1. First, insert information for multiple users, at least three video items and insert the three different types of subscriptions (Basic, Advanced, Unlimited) into the database.
      2. Then insert at least three user subscriptions.
2. Execute the queries and make sure they run correctly