Question

Imagine that 41 randomly selected Miramar students are asked to measure the length of one of...

Imagine that 41 randomly selected Miramar students are asked to measure the length of one of their feet. Suppose that the sample mean foot length (x) turns out to be 23.4 centimeters and that the sample standard deviation of the foot lengths turns out to be 5.1 centimeters. Find a 95% confidence interval for µ, the mean foot length among all Miramar students. Would you expect about 95% of all Miramar students to have foot lengths within this interval? Explain.

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
A sample of 14 randomly selected students have a sample mean score of 27.6 with a...
A sample of 14 randomly selected students have a sample mean score of 27.6 with a sample standard deviation of 5.1 on a placement test. Construct a 95% confidence interval for the mean score, !, of all students taking the test.
Suppose a randomly selected sample of n = 62 men has a mean foot length of...
Suppose a randomly selected sample of n = 62 men has a mean foot length of x = 28 cm, and the standard deviation of the sample is 3 cm. Calculate an approximate 95% confidence interval for the mean foot length of men. (Round the answers to one decimal place.) to cm
2. You randomly select and measure the lengths of 34 bolts. The sample mean length is...
2. You randomly select and measure the lengths of 34 bolts. The sample mean length is 1.24 inches and the standard deviation is 0.3 inches. Construct a 94% interval of confidence of the mean length of all bolts. Find a point estimate for the mean length of all bolts Verify that the conditions are met to construct an interval of confidence for the mean length of all bolts Calculate the critical Z value to construct a 94% confidence interval (round...
41 female students were randomly sampled. Average SAT score for selected female students: 1148 out of...
41 female students were randomly sampled. Average SAT score for selected female students: 1148 out of 1600 points. Sample standard deviation: 263.7 Average score of all students: 1273. Test the claim that the female average is less than the average of all students. Assume sigma is unknown, use alpha = 0.05.
A survey of 200 students is selected randomly on a large university campus They are asked...
A survey of 200 students is selected randomly on a large university campus They are asked if they use a laptop in class to take notes. The result of the survey is that 70 of the 200 students use laptops to take notes in class. What is the value of the sample proportion? What is the standard error of the sampling proportion? Construct an approximate 95% confidence interval for the true proportion by going 2 standard errors from the sampling...
A survey of 200 students is selected randomly on a large university campus. They are asked...
A survey of 200 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. Suppose that based on the​ survey, 120 of the 200 students responded​ "yes." ​a) What is the value of the sample proportion ModifyingAbove p with caret​? ​b) What is the standard error of the sample​ proportion? ​c) Construct an approximate 95​% confidence interval for the true proportion p by taking plus or minus 2...
A survey of 158 students is selected randomly on a large university campus. They are asked...
A survey of 158 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. The result of the survey is that 79 of the 158 students responded​ "yes." An approximate 95​% confidence interval is ​(0.422, 0.578​). Complete parts a through d below. ​a) How would the confidence interval change if the confidence level had been 90% instead of 95%? b) How would the confidence interval change if the...
A survey of 200 students is selected randomly on a large university campus They are asked...
A survey of 200 students is selected randomly on a large university campus They are asked if they use a laptop in class to take notes. The result of the survey is that 70 of the 200 students use laptops to take notes in class. What is the value of the sample proportion? (0.5 pts) What is the standard error of the sampling proportion? (0.5 pts) Construct an approximate 95% confidence interval for the true proportion by going 2 standard...
A survey of 180 students is selected randomly on a large university campus. They are asked...
A survey of 180 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. The result of the survey is that 90 of the 180 students responded "yes". An approximate 98% confidence interval is (0.413, 0.587). Complete parts a through C. a) How would the confidence interval change if the confidence level has been 95% instead of 98% b) How would confidence interval change if the sample size...
A group of 51 randomly selected students have a mean score of 29.5 with a sample...
A group of 51 randomly selected students have a mean score of 29.5 with a sample standard deviation of 5.2 on a placement test. What is the 95% confidence interval for the mean score, μ, of all students taking the test? Critical error= Margin of error= confidence interval=