Question

The data below lists the ages of applicants who were successful in winning promotion. Assume that...

The data below lists the ages of applicants who were successful in winning promotion. Assume that rhe same is a simple random sample. 33,36,37,38,38,39,42,42,43,43,44,44,44,45,45,45,45,46,46,47,47,48,48,49,49,51,51,52,54
a. Construct a 95% confidence interval estimare of the mean age of all such successful people. (Think: Do you use a z or t distribution?)
b. Change the last age mean from 54 years to 540 years. This value is not realistic, but such an error can easily occur during a data entry process. Compute a 95% confidence interval including this change. Does the confidence interval change much?


please make the answer legible. TIA!! :)

Homework Answers

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
The following data lists the ages of a random selection of actresses when they won an...
The following data lists the ages of a random selection of actresses when they won an award in the category of Best? Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts? (a) and? (b) below. Actress(years) 31 31 31 32 36 28 29 40 31 35 Actor (years) 60 34 38 40 29 35 51 35 38 40...
The following data lists the ages of a random selection of actresses when they won an...
The following data lists the ages of a random selection of actresses when they won an award in the category of Best​ Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts​ (a) and​ (b) below. Use the sample data with a 0.050.05 significance level to test the claim that for the population of ages of Best Actresses and...
A survey of 25 randomly selected customers found the ages shown (in years). The mean is...
A survey of 25 randomly selected customers found the ages shown (in years). The mean is 33.00 years and the standard deviation is 8.74 years. a) Construct a 95% confidence interval for the mean age of all customers, assuming that the assumptions and conditions for the confidence interval have been met. b) How large is the margin of error? c) How would the confidence interval change if you had assumed that the standard deviation was known to be 9.0 years?
The following data lists the ages of a random selection of actresses when they won an...
The following data lists the ages of a random selection of actresses when they won an award in the category of Best​ Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts​ (a) and​ (b) below. Actress left parenthesis years right parenthesisActress (years) 2626 2727 3030 2626 3434 2424 2727 3838 3131 3333 Actor left parenthesis years right parenthesisActor...
Listed below are the heights of candidates who won elections and the heights of the candidates...
Listed below are the heights of candidates who won elections and the heights of the candidates with the next highest number of votes. The data are in chronological​ order, so the corresponding heights from the two lists are matched. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal. Construct a​ 95% confidence interval estimate of the mean of the population of all​ "winner/runner-up" differences. Does height appear to...
Listed below are the heights of candidates who won elections and the heights of the candidates...
Listed below are the heights of candidates who won elections and the heights of the candidates with the next highest number of votes. The data are in chronological​ order, so the corresponding heights from the two lists are matched. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal. Construct a​ 95% confidence interval estimate of the mean of the population of all​ "winner/runner-up" differences. Does height appear to...
Listed below are the ages (in years) of a sample of randomly selected male movie stars....
Listed below are the ages (in years) of a sample of randomly selected male movie stars. 32 32 33 25 21 29 38 32 33 23 27 45 52 29 (a) What is the sample size, the sample mean, and the sample standard deviation? (b) Construct a 95% confidence interval for the mean age of all male movie stars. (c) Write a sentence that interprets your confidence interval in the context of the question.
The following data lists the ages of a random selection of actresses when they won an...
The following data lists the ages of a random selection of actresses when they won an award in the category of Best​ Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts​ (a) and​ (b) below. Actress (years) 30 26 28 26 37 27 25 42 31 35 Actor (years) 62 34 33 38 27 33 54 41 34...
The following data is the results of a random sample of the ages (in years) of...
The following data is the results of a random sample of the ages (in years) of 12 houses in a community: 18, 22, 23, 19, 18, 24, 26, 20, 17, 12, 27, 28. Assume the population is normal. Construct a 90% confidence interval for the mean age of a house in this community. a) (18.8, 23.5) b) (18.7, 23.6) c) (18.9, 23.4) d) (19.0, 23.3) 7. If you want to estimate the mean age of a house in the community...
Listed below are the winning times (in seconds) of women in the 100-meter dash for consecutive...
Listed below are the winning times (in seconds) of women in the 100-meter dash for consecutive summer Olympic games, listed in order by year. Assume that the times are sample data from a larger population. 11.07 11.08 11.06 10.97 10.54 10.82 10.94 10.75 10.93 a. Find the values of the indicated statistics. i. Mean ii. Median iii. Standard deviation iv. Variance v. Range b. What is the level of measurement of the data? c. Are the values discrete or continuous?...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT