A survey is planned to determine the mean annual family, Ask an Expert

Statistics

A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 90% confident that the sample mean is correct to within (plus or minus $60) of the population mean annual family medical expenses. A previous study indicates that the standard deviation is approximately $369.

a. How large a sample is necessary?

b. If management wants to be correct to within (plus or minus $25), how many employees need to be selected?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91014991

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

You are working for a large corporation and oversee a

You are working for a large corporation and oversee a marketing research project. For this study, your questionnaire length is 10 minutes and the incidence is 35%, yielding a CPI is $23.00. Your company requires all rese ...

The revenue function rx and the cost function c9x for a

The revenue function R(x) and the cost function C9X) for a particular product are given. These functions are valid for the specified range of values. Find the number of units that must be produced to break even. R(x) =20 ...

1i which of the following characterizes a market ordera a

1) i. Which of the following characterizes a market order? a) A market order, which is considered a small order, is when 100 shares of a stock are ordered b) A market order is when the investor specifies the maximum pric ...

A researcher records the following number of birdcalls made

A researcher records the following number of birdcalls made during an experimental session with robins: 8.4 0.9 (M SD). Assuming these data are normally distributed, what is the probability that robins made more than 11 ...

Bob millers long-term financial goal is to retire

Bob Miller's long-term financial goal is to retire comfortably in 23 years at age 65. You have conducted a robust risk profile analysis on him and have determined that he is an aggressive investor. Miller insisted on all ...

How can i describe the relationship between diversifiable

How can I describe the relationship between diversifiable risk and total risk, along with the role of Beta?

Assume in a particular year aprojecthas the following

Assume in a particular year aprojecthas the following financials: NOI o $700,000; Annual Bedt Service o $430,000 (of which $400k is intrest and 30k is priciple); original loan debt of 6.2M: 39 yr depreciable life: $8M no ...

An equally weighted portfolio consists of 41 assets which

An equally weighted portfolio consists of 41 assets which all have a standard deviation of 0.137. The average covariance between the assets is 0.118. What is the standard deviation of this portfolio expressed as a percen ...

Taylor found that 8 of the recipients of loans from a

Taylor found that 8% of the recipients of loans from a particular mortgage lending institute default within the first 3 years. If he takes a random sample of 4 customers, who received loans 3 years ago, what is the proba ...

What are impacts that flexible work schedules can have on a

What are impacts that flexible work schedules can have on a employee's productivity?

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

Recent Questions

Ask Statistics and Probability Expert