Question

hard i would have taken a something for this headache before every class. Pick True, the answer to this question is "a", pick "a" whether you agree or not, that is the correct answer on the Scantron. Problem 3.1 A random survey of students in education revealed that they spent on average 6 years in school before being able to graduate, a total of 85 students were selected for the survey. The Sample Standard deviation was 1.7 and we do not have a previous study with the population standard deviation. 24) Using problem 3.1 to answer the following question: What is the distribution you need to use to solve the problem? a. The X2 distribution b. The f distribution c. The Normal X Distribution d. The z distribution e. The t distribution

Answer 1

24)
The z distribution

25)
mean = 6 , s = 1.7 , n = 85

z value at 95% = 1.96

CI = mean+/- z *(s/sqrt(n))  
= 6 +/- 1.96 *(1.7/sqrt(85))
= 6 +/- 0.3614
= (5.6386 , 6.3614 )

Option h)

26)

Option k)