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WorksheetsTesting of Hypothesis
Total questions: 10
Worksheet time: 5mins
What hypothesis states no equality or existence of differences, relationship, or effect?
Null Hypothesis
Alternative Hypothesis
Statistical Hypothesis
Random Hypothesis
A level of significance of 5% means:
There's a 5% chance we're wrong
There's a 5% chance to reject the true null hypothesis
There's a 5% chance of failing to reject the true null hypothesis.
There's a 5% chance you'll get an A on the test.
Which of the following shows a right-tailed test?
H1: µ < 15
H0: µ < 15
H1: µ > 15
H0: µ > 15
A Type I error is when:
We obtain the wrong test statistic
We reject the null hypothesis when it is actually true
We fail to reject the null hypothesis when it's actually false
We reject the alternate hypothesis when it's actually true
Is the proportion of babies born male different from 50%? In a sample of 200 babies, 96 were male. Test the claim using 1% level of significance
We conclude "Fail to reject H0". What could we use as our interpretation?
The proportion of babies born male is not 0.50.
There is not enough evidence to say that the proportion of babies born male is different from 0.50.
There is not enough evidence to say that the proportion of babies born male is 0.50.
Which of the following is not an option for an alternative hypothesis?
Ha = k
Ha > k
Ha < k
Ha ≠ k
What does it mean to say a test is two-tailed?
Ha = k
Ha > k
Ha < k
Ha ≠ k
A P-value indicates:
the probability that the null hypothesis is true
the probability that the alternative hypothesis is true
probability of a Type I error
If the test is two-tailed, the critical region, with an area equal to α, will be on the left side of the mean.
True
False
A car manufacturer advertises that its new subcompact models get 47 mpg. If μ is the mileage of these cars, what could be the null and alternate hypothesis if we wanted to check if the car's mpg is overrated?
H0 = 47, Ha > 47
H0 = 47, Ha = 47
H0 = 47, Ha < 47
H0 = 47, Ha ≠ 47
