Question 1
0 out of 8.33333 points
At a certain college, P(smoke) = 0.06.
Give P(Four random students, no one smokes).
Round to three decimals.
Selected
[None Given]
Answer:
Correct
0.781
Answer:
Answer range 0.001 (0.780 +/0.782)
Question 2
0 out of 8.3
Question 1
5 out of 5 points
Use the following table to answer conditional probability questions.
Live with Parents
Own
Rent
Something Else
Total
Female
50
12
15
4
81
Male
39
5
4
1
49
Total
89
17
19
5
130
P(Own | Male) = _.
Enter your answer as a decimal
Open up the "2012 Orioles" dataset on StatCrunch.
There are multiple questions for this dataset, so don't close it.
*
We're going to predict "Total Bases" (more is better) based on "Plate Appearances".
Run the linear regression.
Use the StatCrunch feature
Question 1
0 out of 11.11111 points
We'd like to predict the number of countries a student has
visited,
based on the number of states a student has visited.
Calculate the slope using the formula.
We know:
r = 0.329
Mean (Number of States) = 12.45
Mean (N
Question 1
0 out of 10 points
Open up the "Law School Tuition" dataset on StatCrunch.
Make a scatterplot of x = "Class Size" vs. y = "Yearly Tuition".
Based on the scatterplot and the value of the correlation,
what words describe the relationship between
Question 1
5 out of 5 points
Open up the "Honshu Japan Earthquake" dataset on StatCrunch.
Calculate the summary statistics for "NST" = "Number of Stations" reporting earthquake activity.
Careful:
Suppose there was an error.
In fact, every value in the NST
Open up the "Neighborhood" dataset on StatCrunch.
Enter your answers exactly as StatCrunch provides them. Do not round or you will lose points.
For the variable "Square Footage", calculate the following summary statistics:
Mean: [a]
Standard Deviation: [b
Question 1
10 out of 10 points
Open up the "Darts" dataset on StatCrunch. You can see the results of a small experiment.
The point of the experiment was to see if there was a "Hand" effect or a "Distance" effect.
On repeated throws of a dart by one studen
Directed customers by escorting them to racks and counters and suggested items, persuaded
customers to purchase fragrances, helped customers make selections by building confidence and
offering suggestions and documented sales by updating fragrances sold
Q
Question 1
10 out of 10 points
Open up the "General Social Survey 2008" dataset on StatCrunch.
Make a pie chart for "Highest Degree", grouped by "Race".
What percentage of Blacks surveyed have exactly a High School diploma?
Enter the percentage exactly a