1. A researcher believes that the average size of farms in the U.S. has increased from the 2002 mean of 471 acres. She took a sample of 23 farms in 2011 to test her belief and found a sample mean of 487 acres and a sample standard deviation of 46.9 acres. At a 5% level […]

# Category: Statistics

## Identify the given random variable as being discrete or continuous. The pH level in a shampoo A) Continuous B) Discrete 2. Determine whether the…

1.Identify the given random variable as being discrete or continuous.The pH level in a shampooA) ContinuousB) Discrete2.Determine whether the following is a probability distribution. If not, identify the requirement that is not satisfied.xP(x)00.22910.15520.16630.09840.17250.238 HTML Editor3.Find the mean of the given probability distribution.The number of golf balls ordered by customers of a pro shop has the […]

## A few of the queries we ask you to write will be easier if you use MS SQL Server functions located at https:

SQL Assignment Please read the instructions carefully before beginning this assignment. A few of the queries we ask you to write will be easier if you use MS SQL Server functions located at https://docs.microsoft.com/en-us/sql/t-sql/functions/functions We have tried to note every place below you would need to research a particular function. Before you can write each […]

## Consider this hypothesis test: H 0 : 1 – 2 = 0 H a : 1 – 2 lt; 0 Here 1 is the population-mean of Population 1 and 2 is the population-mean of…

Sample standard deviation (s) 5.43 7.21 a. a. Compute the test statistic t. b. Compute the degree of freedom for the test statistic t. c. What is the rejection rule using the p-value approach and α = 0.05 d. What is the p-value? e. Based on the rejection rule from c., what is your conclusion of the hypothesis? f. Use the above […]

## Case Study 1: Statistical Thinking in Health CareDue Week 4 and worth 150 pointsRead the following case study.Ben Davis had just completed an intensive course in Statistical Thinking for Business Impr

Case Study 1: Statistical Thinking in Health CareDue Week 4 and worth 150 pointsRead the following case study.Ben Davis had just completed an intensive course in Statistical Thinking for Business Improvement, which was offered to all employees of a large health maintenance organization. There was no time to celebrate, however, because he was already under […]

## Imagine that you are a member of the research firm described in this exercise. Imagine that you have not yet conducted the study, but are simply in…

Imagine that you are a member of the research firm described in this exercise. Imagine that you have not yet conducted the study, but are simply in the planning phases. Imagine that you will not measure all criterion variables, but will instead focus on just one: symptoms of stress. The university have told you that […]

## A magician performs the following card trick. She asks a volunteer to secretly select a number between 1 and 10 and deal out that many cards from a…

A magician performs the following card trick. She asks a volunteer to secretly select a number between 1 and 10 and deal out that many cards from a well-shuffled deck of52 standard playing cards. The last card dealt determines a new number of cards to be dealt from those remaining: if it is an ace, […]

## ase: Keep Patients Waiting? Not in My Office CASE : KEEP PATIENTS WAITING ?

ase: Keep Patients Waiting? Not in My OfficeCASE : KEEP PATIENTS WAITING ? NOT IN MY OFFICE Good doctor-patient relations begin with both parties being punctual for appointments. This is particularly important in my specialty-pediatrics. Mothers whose children have only minor problems don’t like them to sit in the waiting room with really sick ones, […]

## In this assignment we consider again the data that was presented as part of the Assignment for Unit 2. In the current assignment we apply some of the…

In this assignment we consider again the data that was presented as part of the Assignment for Unit 2. In the current assignment we apply some of the tools that were introduced in Units 5 and 6 in order to analyze the data. The data was collected from the donor database of Blood Transfusion Service […]

## 1. Researchers are interested in determining whether more women than men prefer the beach to the mountains. In a random sample of 200 women, 45% prefer the beach, whereas in a random sample of 300 men

1. Researchers are interested in determining whether more women than men prefer the beach to the mountains. In a random sample of 200 women, 45% prefer the beach, whereas in a random sample of 300 men, 52% prefer the beach. What is the 99% confidence interval estimate for the difference between the percentages of women […]