Ask Question, Ask an Expert


Ask Statistics and Probability Expert

Hypothesis testing and Confidence interval for mean using t distribution.

A hospital manager is concerned about absenteeism in its clinics.  To try to decrease absence, it provides workers in Clinic A financial incentive for good attendance.  No such incentive is provided in Clinic B, which has historically had almost identical absence rates to that of Clinic A.



Clinic A

Clinic B

Mean Days absent

12.3 days

18.7 days

Standard Deviation

4.4 days

5.1 days

Number of Employees




1. find out separate confidence intervals for the numbers of days absent for Clinic A and Clinic B, respectively.
2. The Health Authority is worried that if the mean days absent in either clinic reach 20 days, it will have difficulties safely operating the clinics. Conduct divides hypothesis tests for Clinics A and B (at 95% confidence) that demonstrate whether they can be confident that absence is less than 20 days.
3. Conduct a statistical test at the 5 percent level of significance to determine if the days of absence at the two clinics are significantly different from one another.  Based on the sample evidence, do you think the incentive should be offered to other branches?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922224

Have any Question? 

Related Questions in Statistics and Probability

Let x and ynbsp be zero-mean jointly gaussian random

Let X and Y  be zero-mean jointly Gaussian random variables with a correlation coefficient of and unequal variances of  (a) Find the joint characteristic function,  (b) Using the joint characteristic function, find the c ...

You are given a member function of a random process

You are given a member function of a random process as   where the amplitude is in volts. Quantize the amplitude o    to 21 levels with the intervals ranging from 10.5 to 10.5 in 1-volt steps. Consider 100 periods of   a ...

A gambler plays a game of chance where he wins 1 with

A gambler plays a game of chance where he wins $1 with probability and loses $1 with probability 1-P each time he plays. The number of games he plays in an hour,N , is a random variable with a geometric PMF  (a) What is ...

Question 1 if a study has 3 groups of 25 subjects each the

Question 1: If a study has 3 groups of 25 subjects each, the degrees of freedom are 2 and 24. a. True. b. False. Question 2: It is possible for all paired means to be statistically significant. a. True.  b. False. Questi ...

Questionnbspeach of the following situations is independent

Question:. Each of the following situations is independent of the other situations. For each draw a graph illustrating the situation and do the requested analysis. a.  Consider the market for soft drinks that is initiall ...

Sat verbal scores are normally distributed with a mean of

SAT verbal scores are normally distributed, with a mean of 500 and standard deviation of 100. You randomly select a test taker. What's the probability that s/he scored between 500 and 700?

Letnbspnbspbe a sequence of five independent discrete

Let   be a sequence of five independent discrete random variables, each with a distribution described by: (a) Find the probability mass function of the median (third largest) of these five samples. b) For this random var ...

A random process x t consists of three-member

A random process X (t ) consists of three-member functions:  and  Each member function occurs with equal probability. (a) Find the mean function  (b) Find the autocorrelation function  (c) Is the process WSS? Is it stati ...

A discrete random process x n is generated by repeated

A discrete random process X [n] is generated by repeated tosses of a coin. Let the occurrence of a head be denoted by 1 and that of a tail by - 1. A new discrete random process is generated by   for n odd (either positiv ...

Questionnbspproblem consists of two different scenarios

Question:  Problem consists of two different scenarios requiring you to find the market supply curve. a.  The market supply curve is given as P = 100 + 2Q. Several new firms enter this market and now you are told that at ...

  • 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

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate