Question

The Chamber of Commerce Miami Beach wishes to estimate the mean expenditures per tourist per visit...

  1. The Chamber of Commerce Miami Beach wishes to estimate the mean expenditures per tourist per visit to the city. A SRS of one hundred tourists was selected for investigation. From this sample, it was found that the mean expenditure was $800.00 per tourist per visit and standard deviation was $120.00 per tourist per visit. Construct a 95% confidence interval for the true mean expenditure per tourist.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Solution :

t /2,df = 1.984

Margin of error = E = t/2,df * (s /n)

= 1.984 * (120 / 100)

Margin of error = E = 23.8

The 95% confidence interval estimate of the population mean is,

- E < < + E

800 - 23.8 < < 800 + 23.8

776.2 < < 823.8

($776.2 , 823.8)

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The Buffalo, New York, Chamber of Commerce wants to estimate the mean time workers who are...
The Buffalo, New York, Chamber of Commerce wants to estimate the mean time workers who are employed in the downtown area spend getting to work. A sample of 15 workers reveals the following number of minutes spent traveling. 14 24 24 19 24 7 31 20 26 23 23 28 16 15 21 Develop a 98% confidence interval for the population mean Confidence interval is between _________ and _______
In an effort to estimate the mean dollars spent per visit by customers of a food...
In an effort to estimate the mean dollars spent per visit by customers of a food store, the manager has selected a random sample of 100 cash register receipts. The mean of these was $45.67 with a population standard deviation equal to $12.30. The manager wants to develop a 99% confidence interval estimate. a) State the best point estimate to use as an estimate of the true mean b) Find the margin of error that will be reported c) Find...
1. To estimate the mean triglyceride levels of people in West Palm Beach, a blood test...
1. To estimate the mean triglyceride levels of people in West Palm Beach, a blood test on 30 randomly selected people was conducted and yielded a mean triglyceride level of 220, with a standard deviation of 12. Construct a 95% confidence interval for the true average triglyceride level of people in West Palm Beach. Round your answer to three decimal places. (3 points) a. (218.868, 229.132) b. (215.519, 224.481) c. (214.967, 233.033) d. (219.741, 230.259)
A statistician is trying to estimate the average number of members per household in a given...
A statistician is trying to estimate the average number of members per household in a given city. He selected a random neighborhood in the city with 79 households and found that the sample average equals to 4.1 members. Assuming that the standard deviation is known to be 1.96 members from previous years’ published statistics, what is the lower limit of a 95% two sided confidence interval constructed to estimate the mean of number of members per household in the city?
An educational psychologist wishes to know the mean number of words a third grader can read...
An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to ensure that the estimate has an error of at most 0.230.23 words per minute. A previous study found that the mean was 29.829.8 words per minute. Assuming that the variance is 23.0423.04, what is the minimum number of third graders that must be included in a sample to construct the 95%95% confidence interval? Round your answer up to the...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in California. Suppose that the mean income is found to be $32.6 for a random sample of 459 people. Assume the population standard deviation is known to be $9.3 . Construct the 80% confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place.
An economist wants to estimate the mean per capital income (in thousands of dollars) for a...
An economist wants to estimate the mean per capital income (in thousands of dollars) for a major city in Texas. Suppose that the mean income is found to be $29.3 for a random sample of 5749 people. Assume the population standard deviation is known to be $10.7. Construct the 99% confidence interval for the mean per capital income in thousands of dollars. Round your answers to one decimal place.
A college admissions director wishes to estimate the mean age of all students currently enrolled. In...
A college admissions director wishes to estimate the mean age of all students currently enrolled. In a random sample of 22 students, the mean age is found to be 21.4 years. From past studies, the ages of enrolled students are normally distributed with a standard deviation of 10.2 years. Construct a 90% confidence interval for the mean age of all students currently enrolled. 1. What is the Critical value?
A college admissions director wishes to estimate the mean age of all students currently enrolled. In...
A college admissions director wishes to estimate the mean age of all students currently enrolled. In a random sample of 19 students, the mean age is found to be 23.7 years. From past studies, the ages of enrolled students are normally distributed with a standard deviation of 10.4 years. Construct a 90% confidence interval for the mean age of all students currently enrolled. 1. The critical value: 2. The standard deviation of the sample mean: 3. The margin of error...
You wanted to estimate the mean number of vehicles crossing a busy bridge in your neighborhood...
You wanted to estimate the mean number of vehicles crossing a busy bridge in your neighborhood each morning during rush hour for the past year. To accomplish this, you stationed yourself and a few assistants at one end of the bridge on 17 randomly selected mornings during the year and counted the number of vehicles crossing the bridge in a 10-minute period during rush hour. You found the mean to be 109 vehicles per minute, with a standard deviation of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT