True or false: Given a population size of 1000, a sample size of 250 is too small.
What is false
100
(x + 1) + (x + 7)
What is 2x + 8
100
(x - 3)(x + 1) = 0
What is x = 3 and x = -1
100
Asking someone who teaches math a survey question "Do you enjoy doing math" is an example of this.
What is bias
200
x^2 + 9x + 14
What is (x + 7)(x + 2)
200
Crenshaw fertilized half of his yard to observe the effectiveness of a certain brand of fertilizer. This is an example of...
What is An experiment
200
(x - 5) - (x + 5)
What is -10
200
x(3x + 5) = 0
What is x = 0 and x = -5/3
200
which of the following is not a method of data collection
census, SRS, Survey, Observational Study
What is SRS
300
4x^2+4x - 3
What is (2x - 1)(2x + 3)
300
Given a mean 30 and a standard deviation of 2. What percent of the population is between 28 and 34?
What is 81.5%
300
(x - 4)(x + 3)
What is x^2 - x - 12
300
x^2 - 3x - 10 = 0
What is x = -5 and x = 2
300
The margin of error for a sample of 350
What is 1/square root of 350 or 5.3%
400
9x^2 + 25
What is (3x + 5i)(3x - 5i)
400
Crenshaw picks a random number out of a hat from one to ten, and then selects every 'n' number of students to interview about the effectiveness of his teaching. This is an example of...
What is systematic sampling
400
(x^3 - 2x^2 + x + 4) divided by (x + 1)
What is x^2 - 3x + 4
400
x^2 = 10x
What is x = 0 x = 10
400
What method produces the least bias
Simple Random, Stratified, Cluster, Convenience
What is Simple Random Sample
500
4x^2 + 40x + 100
What is (2x + 10)^2
500
Given 95% of a population are between 5'5'' and 5'11'', what is the standard deviation given the population has a normal distribution.