STATS QUIZ
±1.96
What are the confidence coefficients?
0.46 and 0.52
What are the lower limit and the upper limit?
0.49 and 0.51
What are the p^ and q^ ̂?
Hypothesis Testing
What do we call a decision-making process for evaluating claims about a population based on the characteristics of a sample purportedly coming from that population.
Estimating Parameters
What do you call processes involved in making conclusions about population values?
T
What is the appropriate distribution
28
What is the point estimate of μ?
0.0144
What is the standard deviation of the sampling distribution of p^̂?
29
What is the upper limit?
586
What is the value of X?
Lower limit of the interval estimate
What is the value resulting from subtracting the maximum error from the sample mean?
95%
What is α?
Normal Curve
What mathematical model is appropriate for decision-making?
0.70
When X=120 and n=406,what is the value of q^ ?
0.23
When X=50 and n=215,what is the value of p^ ?
±2.58
When alpha is equal to 0.01, the critical value are?
Z
When n is greater than equal to 30 and the populations standard deviation is known, what is the appropriate distribution?
t
When n<30 and the population standard deviation is not known, what is the appropriate distribution?
. Directional
When the alternative hypothesis utilizes the > or the < symbol, the test is said to be?
Non-directional
When the alternative hypothesis utilizes the ≠ symbol, the test is said to be?
0.01
When the confidence level is 99%, a= ?
Two-tailed test
A non-directional test is also called?
Hypothesis
An intelligent guess about the characteristics of a population is called?
In a learning style study, 1200 respondents were asked if they can assimilate concepts while watching television. 586 said Yes. Find a 95% confidence interval for the population proportion p?
GIVEN
The mean gasoline consumption of 10 cars is 28 liters with a standard deviation of 1.6 liters. Find the point and the interval estimates using 95% confidence level.
GIVEN
0.44
Given that n=50, σ=1.2 and α= 0.01 The maximum error E is approximately?
76.5
Given that n=80, x ̅=76.5 and s= 3.1 Which of these is the point estimate of the population mean?
-1.96
In a left-tailed test, a = 0.05, the critical value of z is ?
df
In a t- distribution, the critical values are based on?
46% and 52%
THe true population proportion falls between:
Confidence Interval
The __________ is a range of values that contains the parameter value
0.03
The error E is approximately?
27
The lower limit is approximate:
Acceptance Region
Under the normal curve, the middle part represents?
Confidence Coefficients
Under the normal curve, when the lines are drawn through these values, they separate the rejection region from the acceptance region
±1.96
Which of the following are the 95% confidence coefficients?
Average
Which of the following best represents the central value of a set of data?
90%
Which of the following illustrates confidence level
Decision Rule
Which of the following serves as a guide in deciding whether to reject or accept the null hypothesis
Normal Curve
Which of the following shows graphical results in making inferences about population values?
