Question

A researcher was interested in comparing the heights of ninjas in two independent villages


A researcher was interested in comparing the heights of ninjas in two independent villages. A random sample of 9 ninjas from the Hidden Leaf Village has an average height of 64.744 inches, with a standard deviation of 2.192 inches. A random sample of 9 ninjas from the Hidden Sand Village has an average height of 62.556 inches, with a standard deviation of 2.697 inches. Determine a 90% confidence interval for the difference between the mean height of ninjas in the two villages. Round you answer to 3 decimal places. 

  • (1.875,2.501) 

  • (-0.276,4.652)

  • (0.160,4.216) 

  • (-1.214,5.590) 

  • (2.501,1.875)

3 0
Add a comment Improve this question Transcribed image text
Answer #1

2.

SOLUTION :

ANSWER : (0.160, 4.216)

(option C)

Add a comment
Know the answer?
Add Answer to:
A researcher was interested in comparing the heights of ninjas in two independent villages
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • A researcher was interested in comparing the heights of women in two different countries.

    A researcher was interested in comparing the heights of women in two different countries. Independent simple random samples of 9 women from country A and 9 women from country B yielded the following heights (in inches). Country A: 64.1 66.4 61.7 62.0 67.3 64.9 64.7 68.0 Country B: 65.3 60.2 61.7 65.8 61.0 64.6 60.0 65.4 59.0 At the 5% significance level, do the data provide sufficient evidence to conclude that the mean height of women in country A is different from the...

  • A researcher was interested in comparing the heights of women in two different countries

    A researcher was interested in comparing the heights of women in two different countries. Independent simple random samples of 9 women from country A and 9 women from country B yielded the following heights (in inches). Country A: 64.1 66.4 61.7 62.0 67.3 64.9 64.7 68.0 63.6 Country B: 65.3 60.2 61.7 65.8 61.0 64.6 60.0 65.4 59.0 At the 5% significance level, do the data provide sufficient evidence to conclude that the mean height of women in country A is different from...

  • State what the given confidence interval suggests about the two population means. A researcher was interested...

    State what the given confidence interval suggests about the two population means. A researcher was interested in comparing the heights of women in two different countries. Independent simple random samples of 9 women from country A and 9 women from country B yielded the following heights (in inches). W1T18 The following 90% confidence interval was obtained for mu1 - mu2, the difference between the mean height of women in country A and the mean height of women in country B.-4.34...

  • A student researcher compares the heights of men and women from the student body of a...

    A student researcher compares the heights of men and women from the student body of a certain college in order to estimate the difference in their mean heights. A random sample of 6 men had a mean height of 68.3 inches with a standard deviation of 1.68 inches. A random sample of 11 women had a mean height of 63.2 inches with a standard deviation of 1.67 inches. Determine the 95% confidence interval for the true mean difference between the...

  • 7. A student researcher compares the heights of men and women from the student body of...

    7. A student researcher compares the heights of men and women from the student body of a certain college in order to estimate the difference in their mean heights. A random sample of 14 men had a mean height of 67.7 inches with a standard deviation of 3.06 inches. A random sample of 17 women had a mean height of 64.7 inches with a standard deviation of 1.97 inches. Determine the 90% confidence interval for the true mean difference between...

  • A student researcher compares the heights of men and women from the student body of a...

    A student researcher compares the heights of men and women from the student body of a certain college in order to estimate the difference in their mean heights. A random sample of 12 men had a mean height of 70.7 inches with a standard deviation of 2.41 inches. A random sample of 17 women had a mean height of 62.7 inches with a standard deviation of 3.07 inches. Determine the 98 % confidence interval for the true mean difference between...

  • A student researcher compares the heights of men and women from the student body of a...

    A student researcher compares the heights of men and women from the student body of a certain college in order to estimate the difference in their mean heights. A random sample of 15 men had a mean height of 70.5 inches with a standard deviation of 1.69 inches. A random sample of 5 women had a mean height of 67.2 inches with a standard deviation of 3.13 inches. Determine the 98% confidence interval for the true mean difference between the...

  • 1) A researcher is studying the heights of men with a certain medical condition. She collects...

    1) A researcher is studying the heights of men with a certain medical condition. She collects a sample of 37 such men and finds the mean height of the sample to be x̄ = 66.9 inches. Assume that the standard deviation of heights of men with the condition is the same as that of the general population, σ = 2.8 inches. a) Find a 99% confidence interval for the true mean height of the population of mean with this condition....

  • In malaria prone countries, an experiment comparing the effectiveness of an anti-malarial medication vs the distribution...

    In malaria prone countries, an experiment comparing the effectiveness of an anti-malarial medication vs the distribution and use of mosquito nets was employed. In 20 villages with the nets, the average number of new cases per village per month was 6 with a standard deviation of 4. In the 20 villages receiving the medications, the average was 3 with a standard deviation of 2. Calculate a 99% confidence interval for the difference in average cases given the two different interventions....

  • Click Submit to complete this assessment. Question of Questions 3 points The heights (in inches) of...

    Click Submit to complete this assessment. Question of Questions 3 points The heights (in inches) of adult males in the United States are believed to be Normally distributed. The average height of a random sample of 25 American adult males is found to be 69.72 inches and the standard deviation is 4.15. A 90% confidence interval of the true mean of the heights (in inches) of adult males in the United States is: Question Click Submit to complete this assessment

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT