Hey guys, I have 5 questions I'd like answered with an explanation of some sort as well. ( Need to show work , and I'd like to understand it as well ).
They are due in about 12 hours. I'm paying 20fg/question as I would like these done fast and I'm hoping that price will attract the stat-lovers out there
If you are available to do more than these, we can absolutely work something out !

**Use the sample of 30 students that you used in Lab 2 to construct the following confidence intervals. Please show your work or explain how you got your answers.

1. For the ____ (state how many) females in your sample, the mean height is _____ inches. Round to 1 decimal place. Use this sample mean to construct a 95% confidence interval for the mean height of all the females in the Combined Class file. Assume that σ = 2.5 inches.
2. For the 30 students in your sample, the mean credit hour load is _____ hours with s = ____ hours. Use these statistics to construct a 90% confidence interval for the mean credit hour load of all students in the Combined Class file.

3. For the 30 students in your sample, what proportion (%) are full time students (taking 12 or more credit hours)? Round the proportion to 3 decimal places so that the % has 1 decimal place. (For instance, if 13 of your 30 students are full time, the proportion is 13/30 or .433 or 43.3%.) Use this statistic to construct a 99% confidence interval for the proportion of all students in the Combined Class file who are full time students.

Note: When you report the confidence intervals, don’t forget to include the interpretative statement. For instance, if you’re estimating the mean number of miles a student drives to class with a 98% confidence interval, and you have a confidence interval of (3.5, 8.7), you would say something like “I am 98% confident that the mean miles a student drives to class is between 3.5 miles and 8.7 miles.”


4. Suppose you are asked to estimate within 0.1 inches the mean height of all male students at the College using a 98% confidence interval. Assume that σ = 2.75 inches. How many students would you need to survey to construct the interval?

5. Suppose you are asked to estimate within 1.5% the proportion of all Seminole State College students who receive financial aid, using a 95% confidence interval. How many students would you need to survey to construct the interval?


**I can pm the sample of 30 students ( they are anonymous ) data, if you let me know that you can do these 3.

Just post the sample.

Sample for 1-3
Columns are as follows;
gender/age/height/shoe/credit hrs/hair/eyes / marital / smoker?/resident?/ born in state?

Male 37 72 11 6 black brown Married No Yes No
Female 33 64 10 7 brown green Married No Yes Yes
Female 36 66 11 6 brown brown Single No Yes No
Female 22 63 8 6 brown brown Engaged No Yes Yes
Male 19 66 10.5 13 black brown Single Yes Yes No
Male 22 68 10 6 brown brown Single No Yes Yes
Male 23 69 10 3 black brown Single No Yes No
Female 20 61 6 12 brown brown Single Yes Yes No
Female 30 62 6.5 13 brown brown Engaged No Yes Yes
Female 29 66 7.5 6 black blue Single No Yes Yes
Female 17 65 9 18 black brown Single No Yes Yes
Female 32 63.5 8.5 12 brown brown Engaged No Yes Yes
Male 18 brown green Single No Yes Yes
Male 29 72 12 9 brown blue Single No Yes No
Female 35 66 9.5 6 brown green Married No Yes No
Male 16 70 11.5 15 blonde blue Single No Yes Yes
Female 24 66 8 6 brown brown Single No Yes No
Male 30 75 15 7 brown brown Married No Yes No
Male 43 70 9.5 9 black brown Married No Yes Yes
Male 25 71 10.5 6 brown brown Single No Yes Yes
Female 24 68 7 4 red green Single No Yes Yes
Female 32 66 9.5 6 black brown Married No Yes Yes
Female 27 69 8.5 3 blonde green Single Yes Yes Yes
Female 45 64 8 3 brown brown Married No Yes No
Female 29 67 8.5 10 black brown Single No Yes No
Female 50 62 7.5 6 blonde green Married Yes Yes Yes
Male 35 77 13 3 blonde blue Divorced No Yes No
Female 27 68 8.5 3 brown green Single No Yes Yes
Male 29 68 12 3 brown brown Single Yes Yes No
Female 43 65 7 6 blonde blue Married No Yes No

Before posting the info is all in columns. Not sure if there's a way to maintain the formatting


Or google doc ; https://docs.google.com/document/d/1YBP8-0AHiJ37KoV_Wk1Dds5RUoJV-c7QVXT2pTLMSy0/edit?usp=sharing

Please let me know if the link doesn't work.

This post was edited by Keasbey_Nights on Nov 23 2014 12:26pm

don't use tabs, man.

Anyone? I have more to this assignment as well that I'm working on right now..
Looking to get rid of some fg and Opay if I have to.

1) We are 95% confident that the average height of the females in the combined class file is between 63.9 and 66.2 inches.

2) We are 90% confident that the average number of course hours taken by the students in the combined class file is between 5.87 and 8.33 hours.

This post was edited by Dontrunaway on Nov 23 2014 05:56pm

submitted the assignment, but I will pay you for the ones that you did since you did them by hand