Symbols
What does the following symbol represent: σ
Population Standard Deviation
Which test statistic would you use to test a claim about two sample means?
t statistic
A graph in which the points approximate a straight line showing a normal distribution.
Normal quantile plot
What type of sample is required for all hypothesis tests covered in class?
Simple random sample
Identify the original claim.
p>0.50
What does the following symbol represent: s
Sample Standard Deviation
Which test statistic would you use to test a claim about a population mean?
t statistics
A graph that resembles a bell-shaped curve when the data is normally distributed.
Histogram
In the hypothesis tests used to test a claim about a population mean, either or both of the following conditions must be met:
- the data must be normally distributed
- have a n>______.
30
Most internet users utilize two-factor authentication to protect their online data.
Identify the null hypothesis.
H0:p=0.50
What does the following symbol represent: p̂
Sample Proportion of Successes
Which test statistic would you use to test a claim about two sample proportions?
z score
If a normal quantile plot is in a pattern that does not resemble a straight line it is _________ distributed.
not normally
failure
Most internet users utilize two-factor authentication to protect their online data.
Identify the alternative hypothesis.
H1:p>0.50
What does the following symbol represent: n
sample size
Which test statistic would you use to test a claim about a population standard deviation or variance?
χ2
not normally
To test a claim about a population proportion, np and nq must both be greater than or equal to _______.
5
A common recommendation is that adults should sleep between 7 hours and 9 hours each night. Use the P-value method with a 0.05 significance level to test the claim that the mean amount of sleep for adults is less than 7 hours.
Identify the alternative hypothesis.
H1: μ<7 hours
What does the following symbol represent: H0
Null Hypothesis
Which test statistic would you use to test a claim about two sample standard deviations or variances?
F statistic
A standard normal distribution has a mean of ______.
0
Which two sample hypothesis test has a strict normal distribution requirement?
Fisher Test
U.S. Mint specifications require that quarters manufactured after 1964 have weights with a mean of 5.670 g and a standard deviation of 0.062 g. Use a 0.05 significance level to test the claim that these weights are from a population with a standard deviation that is less than 0.062 g.
Identify the original claim.
σ<0.062g