Question 1 of 20
The father of a junior high school student wants to determine the most popular book among
junior high students. Select the sample with the least potential bias.
A. A randomly selected
Question 1
The following dot plot represents the ages of the people in a sample selected from a group of
campaign volunteers.
How many people were in the sample?
A. 15
B. 21
C. 27
D. 28
Question 2
Ide
ASSIGNMENT 08
MA260 Statistical Analysis I
Directions: Be sure to save an electronic copy of your answer before submitting it to
Ashworth College for grading. Unless otherwise stated, answer in comple
ASSIGNMENT 05
MA260 Statistical Analysis I
Directions: Be sure to save an electronic copy of your answer before submitting it to
Ashworth College for grading. Unless otherwise stated, answer in comple
Question 1 of 40
A consumer advocacy group claims that the mean amount of juice in a 16
ounce bottled drink is not 16 ounces, as stated by the bottler.
Determine the null and alternative hypotheses fo
Quiz #1-Statistical Analysis
A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss.
She randomly assigns half of a group of overweight persons to a treat
Stats Quiz#2
Question 1 of 20
5.0 Points
The table shows the price of a volatile stock from the months January 1999 through December
1999 as determined by the closing price on the last trading day of
Question 1 of 20
5.0 Points
A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random
sample of 24 students is selected and the mean test score of the sample is comp
Question 1 of 20
5.0 Points
Al and Joe are two county sheriffs deputies assigned to watch for traffic violations. Their arrest
and conviction records for May and June are shown below.
Who had the best
1. Repair number 1
z=
7590
=0.6818
22
Cost was 0.6818 which is below the mean repair cost.
Repair number 2
z=
10090
=0.4545
22
Cost of repair was 0.4545 which is above the mean repair cost.
z=
2. a)
4
ASSIGNMENT 08
MA260 Statistical Analysis I
Directions: Be sure to save an electronic copy of your answer before submitting it to
Ashworth College for grading. Unless otherwise stated, answer in comple
ASSIGNMENT 05
MA260 Statistical Analysis I
Directions: Be sure to save an electronic copy of your answer before submitting it to
Ashworth College for grading. Unless otherwise stated, answer in comple
1. The mean would be as follow
X P(x) =
2 0.50 + 8 0.30 + 10 0.20 = 5.40
Mean = 5.40
The variance would be as follows
x ^2 P(x) mean ^2 =
2^ 2 0.50 + 8 ^2 0.30 + 10 ^2 0.20 (5.40) ^2 = 2.00 + 19.20 +