Kris Rose
Chapter 8 HW Part 3
25. Do the Screws Have a Length of in.?
n = 50, x = 0.74682, s = 0.012322
= 0.75 inches
Ho: = 0.75 inches
H1: 0.75 inches
= 0.05 and df = 49
Critical Values: t = t/2 = t0.025 = 2.009
Calculations:
t = ( - )/s
= (0.74682 0.7
Kris Rose
Math 215
Chapter 6 Homework Part 3
Due 10/21/2013
Sampling Distribution of the Mean
The sampling distribution of the mean is a distribution of sample means with all samples
having the same size n taken from the same population. The sampling dist
Kris Rose
Chapter 12 Problems 14 and 15
Due 12/09/2013
14) Ho: The mean amount of greenhouse gas emissions is the same for each type of car categories.
Ho : 1 = 2 = 3
Ha : Not all mean amounts of greenhouse gas emissions have the same for each type of car
Kris Rose
Chapter 11 HW Part 3
Critical Thinking: Was the law of women and children first followed in the sinking of the
Titanic?
Analyzing the Results
The graph shows the percentage of women survivors is higher than the others and the percentage
of men s