Regression analysis
Solve problem #11.36(a, b), page 435. [#13.36 (a, b), P. 495 in eText]
At the 0.05 level of significance,
a. Is there an interaction between detergent brand and washing cycle time?
b. Is there an effect due to detergent brand?
c. Is th
Chi-square test Goodness-of-fit test
Solve the following problem:
In the 2000 U.S. Census, the ages of individuals in a small town were found to
be the following:
<18
18-35
>35
20%
30%
50%
in 2010, ages of n=500 individuals from the same small town were s
Hypothesis testing - Z test
Solve problem #9.16, page 351 [#9.16, p. 317 in eText]
The manager of a paint supply store wants to determine whether the mean
amount of pain contained in 1-gallon cans purchased from a nationally known
manufacturer is actually
Problem 5.25:
Rudys On-Line Office Supplies
a. What are the mean and standard deviation of the number of customers
exceeding their credit limits?
n=20 (number of customers)
p=0.05 (probability that a customer will exceed the credit limit)
Mean = np = 20(0
Hypothesis testing - t test
Solve problem #9.28, page 356 [#9.28, p. 322 in eText]
The file FastFood contains the amount that a sample of fifteen customers spent for
lunch ($) at a fast-food restaurant:
7.42 6.29 5.83 6.50 8.34 9.51 7.10 6.80 5.90
4.89 6.
Confidence intervals
Solve problem #8.18, page 313 [#8.18, p. 283 in eText]
The file FastFood contains the amount that a sample of fifteen customers spent for
lunch ($) at a fast-food restaurant:
7.42
4.89
6.29
6.50
5.83
5.52
6.50
7.90
8.34
8.30
9.51
9.60
Problem 6.12
In 2011, the per capita consumption of coffee in Sweden was reported to be
7.27 Kg, or 15,994 pounds. Assume that the per capita consumption of coffee
in Sweden in 2011 is approximately normally distributed with a mean of
15.994 pounds and a
CHM 130LL: Experiment #2 Measurements and Properties
Objectives
1.
2.
3.
4.
Use measuring tools correctly.
Read and record measurements correctly (significant digits and unit).
Associate metric units with the quantities being measured.
Determine the densi