What is an interval calculated from sample data that is guaranteed to capture the true population parameter in 95% of all samples?
What is a 95% Confidence Interval
100
What is the distribution of a sample statistic?
What is Sampling Distribution
100
A SRS is taken. Out of the 3986 students polled 1776 believe there should be school on Saturdays. What is the population proportion?
What is 44%
100
What's Mr. Doty's first name?
What is Leo
200
The Null Hypothesis is a statement of effect and difference true or false?
What is False
It is a statement of "no effect and no difference"
200
How many standard deviations away from the mean would you have to be to have a 95% confidence interval?
What is 2
200
Give an example of a sampling error
What is
A) The use of bad sampling methods (voluntary response)
B) The wrong sampling frame (list of individuals from which you draw your samples)
200
An p-value greater than 5% is evidence against the null
True or False
What is False
200
Who is Mr. Doty's favorite student
Who is ?
300
If the Null Hypothesis is above .05 The statement is true.
True or False and why
What is False there is not enough evidence against the null
300
Does the sample size have anything to do with the confidence statement?
True or false
What is true
300
How is the center of a sampling distribution related to the center of the population distribution?
What is the same number
300
School Districts are trying to determine if the statistic of 1776 out of 3986 has decreased from .20. State the Null and alternative hypothesis
What is
Ho: p = .2
Ha: 9 < .2
300
What part of the military was Mr. Doty in?
What is Marines
400
Chris tossed a coin 4040 times. He got 2048 heads.
What is the Ha and Ho?
What is
Ho:p=0.5
Ha:p is not equal to .5
400
Find a 99% confidence interval for the proportion of all high school students who smoked cigarettes in the past month.
p^=3340/12,960
z*=2.58
What is (0.2479,0.2675)
400
As the sample size decreases the spread of the sampling distribution increases True or False
What is False
400
Describe how extreme an outcome is if the null is rejected
The p-value is less than 5%.
400
How long has Mr. Doty been married?
A) between 20-25 years
B) between 25-30 years
What is A
500
The accepted body temperature is 98.6 degrees. You plan to find out in a SRS. You hope to show that a majority have temperatures lower than 98.6 degrees.
What are the null hypothesis and alternative hypothesis?
What is
Ho: μ = 98.6
Ha: μ > 98.6
500
Write the equation for a confidence interval for a population proportion.
What is
p^ +- z* √p^(1-p^)/n
500
Describe the sampling distribution of a bell curve.
What is evenly distributed
500
if p^ is .7 and the Standard Deviation is .04, what is the 95% Confidence Interval?