z-test (S.P.2.3)
Presentation
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Mathematics
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10th - 12th Grade
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Easy
Standards-aligned
Sarah Murillo
Used 3+ times
FREE Resource
8 Slides • 10 Questions
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z-test (S.P.2.3)
NC.M4.SP.2.3 Implement a one proportion z-test to determine if an observed proportion is significantly different from a hypothesized proportion
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S.P.2.3
NC.M4.SP.2.3 Implement a one proportion z-test to determine if an observed proportion is significantly different from a hypothesized proportion
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Can only use when the 10% condition and the Normal Large counts Condition are both met
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Multiple Choice
Identify the mean of the sampling distribution
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Multiple Choice
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Multiple Choice
Calculate the standard deviation of the sampling distribution
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Meaning
This means that the proportion of young adults who watch online videos in a sample of 1000 typically vary by 0.014 from the true proportion of 0.75 (like the margin of error)
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Multiple Choice
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Using a Z-test
Both conditions are met, so now we can use the z-test. We will take the standard deviation that we already have to help solve.
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Open Ended
Part 1: Use the picture to help you find the first z-score. Think about where these numbers came from
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Open Ended
Part 2: Use the picture to help you find the second z-score. Think about where these numbers came from.
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P-Values
p-values of a test are the probability of getting evidence for the alternative hypothesis
We can get the p-values by looking at table A.
Here are our z-scores
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Open Ended
The p-value for a z-score of -1.43 is 0.0764 and the p-value for a z-score of 1.43 is 0.9222. Make a guess as to how we would use these to numbers to find the probability that a random sample of a 1000 young adults will result within 2 percentage points of the true value.
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Open Ended
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Poll
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Open Ended
z-test (S.P.2.3)
NC.M4.SP.2.3 Implement a one proportion z-test to determine if an observed proportion is significantly different from a hypothesized proportion
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