Probability of sample proportions example | Sampling distributions | AP Statistics | Khan Academy
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- Опубликовано: 21 авг 2024
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Probability of sample proportions example.
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AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
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Thank you so much Khan Academy! It helped me a lot
This man just saved my life cause I have a math final tomorrow
weird timing my class just went over this stuff today...
Thanks a million, Khan
Suppose researchers are concerned about the rate of residents reporting no access to health insurance in a particular community.
Suppose national statistics indicate that 24% of residents are living without health insurance.
Assume the researchers sample a group of 10 households.
The probability of seeing one household having no insurance in a sample is ______.
I think this answer is normalPDF(1,2.4,1.35) = 0.1726
(similar operations to the video, but it is probability distribution function and not cumulative distribution function)
Either way, thanks for the video. It helped.
Is this the same as using the Z table?
yes, the part where he enters the lower and upper bound can be calculated through Z-tables
Why don't we use the x bar for mean and S for standard deviaiton? (since it's for a sample)
Cheers🎉
Can you please tell the formula for p(p hat>0.10). What you did on the calculator was not very clear.
Yes please, how do we find that?
how can we solve this problem with z table?
3:50 Ladies and gentlemen our calculator has gotten an awesome upgrade 📟😎