Suppose you want to determine whether the average values for
populations 1 and 2 are different,...
Suppose you want to determine whether the average values for
populations 1 and 2 are different, and you
randomly gather the following data.
sample 1
2, 11, 7, 8, 2, 5, 9, 1, 9, 1, 5, 8, 11, 2, 5, 5, 6, 9
sample 2
10, 12, 8, 12, 9, 12, 9, 7, 9, 10, 11, 10, 11, 10, 7, 8, 10,
10
Test your conjecture, using a probability of committing a Type I
error of .01. Assume the population...
- Pick a theme (topic)
- Define two distinct populations and two independent samples,
for example:...
- Pick a theme (topic)
- Define two distinct populations and two independent samples,
for example: Population 1: Male Students at DVC, Population 2:
Female Students at DVC. Two populations or samples are independent
if the values selected from one population are not related to or
somehow naturally paired or matched with the values selected from
the other population.
- Devise a sampling technique. A SRS is not expected but it
should be more than a mere convenience sample. Sampling...
Describe a confidence interval for the difference in means
between two population by stating
1. a...
Describe a confidence interval for the difference in means
between two population by stating
1. a pair of populations composed of the same type of individuals
and a quantitative variable on those populations,
2. sizes and degrees of freedom of samples from those
populations,
3. the means of those samples, and
4. the standard deviations of those samples. Then state
5. a confidence level and find
6. find the interval. Finally, perform a test of significance
concerning the difference in...
Using the methods in Section 11.1, test the hypothesis (α =
0.05) that the population proportions...
Using the methods in Section 11.1, test the hypothesis (α =
0.05) that the population proportions of red and brown are equal
(pred = pbrown). You are testing if their proportions are equal to
one another. NOTE: These are NOT independent samples, but we will
use this approach anyway to practice the method. This also means
that n1 and n2 will both be the total number of candies in all the
bags. The “x” values for red and brown are...
Plant sizes get larger as you move from ATC-1 to ATC-4. Output
ATC-1 ATC-2 ATC-3 ATC-4...
Plant sizes get larger as you move from ATC-1 to ATC-4. Output
ATC-1 ATC-2 ATC-3 ATC-4 1,500 $10 15 $20 $30 2,000 8 12 17 25 2,500
9 10 15 20 3,000 12 8 13 18 3,500 15 6 11 16 4,000 18 10 9 14 4,500
20 12 7 12 5,000 24 15 11 10 5,500 29 19 13 8 6,000 35 25 15 9 In
the long run, the firm should use plant size ATC-4 for what level...
Plant sizes get larger as you move from ATC-1 to ATC-4. Output
ATC-1 ATC-2 ATC-3 ATC-4...
Plant sizes get larger as you move from ATC-1 to ATC-4. Output
ATC-1 ATC-2 ATC-3 ATC-4 1,500 $10 15 $20 $30 2,000 8 12 17 25 2,500
9 10 15 20 3,000 12 8 13 18 3,500 15 6 11 16 4,000 18 10 9 14 4,500
20 12 7 12 5,000 24 15 11 10 5,500 29 19 13 8 6,000 35 25 15 9
Which plant size would produce at the least cost for the
1,500-2,500 range of...