Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1. Determine the equation of regression line for the given data.  What is the predicted value of Y when X = -2?  What is the predicted value of Y when X = 4?

X      -7    -2    5    1   -1   -2   0   2   3   -3
Y     -12    -8    9    1   -5   -6  -1   4   7    -8                                      

2. The data given below are the final exam scores of 10 randomly chosen statistics students and the number of hours they studied for exam. Determine the equation of the regression line for the given data. Predict final exam score for students who studied 4 hours.  Predict final exam score for students who studied 6 hours.

Hours (X)   3       5      2      8      2      4      4      5      6     3 
Score (Y)   75     90     70     98     76    88    95    99   98   81                              

3. Determine the correlation coefficient between X and Y.  Is there a weak or strong, positive or negative correlation between X and Y?

X    -5    -3    4    1    -1    -2    0    2    3    -4
Y    -9    -7    8    2    -3    -5   -2    4    7    -7   

4. A pharmaceutical company tested two new flu vaccines intended to boost immunity. To test the efficiency of this drug, a one year study was done were at the starting of the year three groups of eight individuals were given either Flu Shot 1, Flu Shot 2, or a placebo (a shot with only saline and no vaccine).  The number of sick days from work each individual took was carefully recorded over the following year. Both flu shots were found to be completely safe with no side effects, but differed in terms of effectiveness.  The data given below gives the number of sick days for the individuals in each of the three groups.

Carry out a one-way ANOVA analysis, testing at the 0.05 level.  Also, compute the mean number of sick days for each group. describe your results.  But equally important, also describe what you will do if you owned your own company.  will you pay for your employers to receive Flu Shot 1 or Flu Shot 2 in order to keep their number of sick days down?  If so, which one will you select? Will you choose either vaccine only if it was very cheap or would you be willing to invest a lot into the vaccine for your employees?  Describeyour reasoning.

Group                  Sick days per year
Placebo                7  4  6  8  6  6  2  9
Flu Shot 1             5  3  3  5  4  7  3  3
Flu Shot 2             2  4  1  2  2  1  2  5

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M91406

Have any Question? 


Related Questions in Statistics and Probability

Use the given degree of confidence and sample data to

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Round to three decimal places. n=74, x=12; 95% confidence.

Paper should be between 800 and 1000 words in length it is

Paper should be between 800 and 1,000 words in length. It is due according to the due date on the course calendar. 1. Drawing on the readings and lectures, name at least three developments or factors that encouraged the ...

Since 1865 african americans native americans women latino

Since 1865, African Americans, Native Americans, Women, Latino Americans, Asian Americans, other Minority Groups (native-born and immigrant), Homosexuals, Immigrants from all over, Religious Groups, etc. all agitated for ...

Question the volume of soft drink in plastic bottles is a

Question: The volume of soft drink in plastic bottles is a normal random variable with mean 16 ounces and standard deviation 0.6 ounces. a.) If a bottle is selected at random, find the probability that it contains more t ...

Why is a z score a standard score why can standard scores

Why is a z score a standard score? Why can standard scores be used to compare scores from different distributions?

1 show by example that if a and b are two matchings not

1. Show by example that if A and B are two matchings (not necessarily stable), then A ∨w B is not necessarily a matching. 2. Prove that when the partial ordering over the set of stable matchings is , the minimum of the s ...

In an investigation of environmental causes of disease data

In an investigation of environmental causes of disease, data were collected on the annual mortality rate ( deaths per 100,0000) for males in 61 large towns in England and Wales. In addition, the water hardness was record ...

The time spentin days waiting for a heart transplant in two

The time spent(in days) waiting for a heart transplant in two states for patients with type A+ blood can be approximated by a normal distribution, as shown in the graph to the right. Complete parts(a) and(b) below. μ = 1 ...

Researchers want to test the effectiveness of a new pain

Researchers want to test the effectiveness of a new pain medication. Four hundred people were recruited to participate in the clinical trial. In clinical testing, 55 out of 239 people taking the medication reported pain ...

You are an economic consultant whose task is to investigate

You are an economic consultant whose task is to investigate whether there is gender discrimination with respect to earnings in the government of Little Rock. You take a random sample of 22 people of which 10 are women an ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen