2022 AP Statistics Free Response #4

Walkthrough of the 2022 AP Statistics Free Free Response #4

Link to the released FRQs:

Link to my PDF Solutions:

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[Vykng]

I studied so much for all the significance tests that i was underwhelmed when a one prop z interval showed up 😂 i really thought i was gonna do a test on slope or matched pairs or something

[shadmo]

Correction: (0.558 to 0.622). not 0.662

[shritan]

I calculated this manually, but I made a small mistake. I did not multiply the SE by 1.96, which lead my CI to be about half the width. If this is the only mistake I made on this problem, would I get a three or lower?

[Nghi_nguyenn]

1:53 don't you use population proportion to check normal condition? It's not given here so i used 0.5...

[danielneill]

My teacher would have us write p= true proportion of what ever the question was about. I forgot to do and you didn’t either. Do you think it will be wrong. She said sometimes they don’t require it.

[danielneill]

Did we need to write the stuff that we put in the calculator or could we just state the interval because that’s what I was told all that need to do.

[Ookashay]

I did the interpreting part of the confidence interval in part B. iwould that cost me points?

[rafaelsilva]

Would I loose points if I didn’t state the conditions and I just interpreted the interval ?

[jesusreyes]

If i put does not but i said that it wasnt in the interval would I get partial points?

[Katie-tryi]

I rounded down to 542 instead of up to 543 since it’s people and I thought you couldn’t round up for that. Is that fine? Confidence interval was still super close to urs

[hanley]

How much would I lose for only doing one of the 10% calculations ?

[Ambatakummmmm]

Isn't it true proportion of teenagers who would RESPOND that they use a video streaming service?