Question

A recent study of 16 Wayne residents revealed that they had lived at their current address...

A recent study of 16 Wayne residents revealed that they had lived at their current address for an average of 16 years. The standard deviation of the sample was 4 years.

A 95% confidence interval for the population mean ranges from

A,13.869, 18.131

B.16.869,17.869

C.17.131,18.131

D.14.121,20.245

Homework Answers

Answer #1

Confidence Interval                           
                   
                       
                  
Lower Limit =
Lower Limit = 13.869                          
Upper Limit =
Upper Limit = 18.131                          
95% Confidence interval is ( 13.869 , 18.131 )   

Option A,13.869, 18.131 is correct.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A recent study of 33 Jackson County, Missouri residents revealed that they had lived at their...
A recent study of 33 Jackson County, Missouri residents revealed that they had lived at their current address for a mean of 19 years, with a sample standard deviation of 2.40 years. What is the population mean? What is the best estimate of the population mean? What is the standard error of the mean? Develop a 99.9% confidence interval for the population mean.
In a study of life expectancy in Boston, a random sample of 19 people lived an...
In a study of life expectancy in Boston, a random sample of 19 people lived an average of 74.2 years. Suppose the population standard deviation is σ = 10.2 years, Find a 90% confidence interval for the mean of life expectancy in Boston.
A survey of eight vice presidents of information technology and information systems who had been in...
A survey of eight vice presidents of information technology and information systems who had been in their current position for 10 years or less, revealed &174,813 as average salary. Assume a random sample with a standard deviation of $25,000. a. Find the 95% confidence interval for the population mean salary. b.find the 99% confidence interval for the population mean salary. c. complete the following sentence: We are 95% sure that the population mean salary is at least................
A recent study reported that for a sample of 50 kitchens with gas cooking appliances monitored...
A recent study reported that for a sample of 50 kitchens with gas cooking appliances monitored during a one-week period, the sample mean CO2 level (ppm) was 726.15, and the sample standard deviation was 133.56. a) Calculate and interpret 90%, 95% and 99% confidence interval for true average CO2 level in the population of all homes from which the sample was selected. b) Approximating population standard deviation with sample standard deviation, what sample size would be necessary to obtain an...
A random sample of size 16 taken from a normally distributed population revealed a sample mean...
A random sample of size 16 taken from a normally distributed population revealed a sample mean of 50 and a sample variance of 36. The upper limit of a 95% confidence interval for the population mean would equal: a)57.81 b)53.20 c)69.90 d)75.31
A random sample of 36 college graduates revealed that they worked an average of 6 years...
A random sample of 36 college graduates revealed that they worked an average of 6 years on the job before being promoted. The sample standard deviation was 1 years. Using a 95% confidence interval, what is the confidence interval for the population mean? Suppose that the population is normally distributed.
A recent study of 34 gas stations in a large city revealed the mean price of...
A recent study of 34 gas stations in a large city revealed the mean price of unleaded gas was $0.87 per litre, with a population standard deviation of $0.02 per litre. Construct the 90% confidence interval for the population mean. Type your final answer, rounded to two decimal places, into the second blank, and the unit into the first blank. Answer: Between and .
In a study of monthly salary distribution of residents in Paris conducted in year 2015, it...
In a study of monthly salary distribution of residents in Paris conducted in year 2015, it was found that the salaries had an average of €2200 (EURO) and a standard deviation of €550. Assume that the salaries were normally distributed. Question 1: Consider sampling with sample size 64 on the above population. Compute the mean of the sampling distribution of the mean (?̅). Question 2: Compute the standard deviation of the sampling distribution of the mean in Question 1 above....
a recent study of 25 students showed they spent average of $18.53 on gas per week,...
a recent study of 25 students showed they spent average of $18.53 on gas per week, the sample standard deviation of the sample was $3.00, construct a 95% confidence interval for the mean amount spent on gas per week
Consider two populations. A random sample of 28 observations from the first population revealed a sample...
Consider two populations. A random sample of 28 observations from the first population revealed a sample mean of 40 and a sample standard deviation of 12. A random sample of 32 observations from the second population revealed a sample mean of 35 and a sample standard deviation of 14. (a) Using a .05 level of significance, test the hypotheses H0 : μ1 − μ2 = 0 and H1 : μ1 − μ2 ≠ 0 respectively. Explain your conclusions. (b) What...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT