The number of households surveyed was 800, 133 of those surveyed said they like $\pi$. Test the claim that more than 15% of the households like $\pi$. Use a .05 significance level.

What is the test statistic?

z=___

Question

The number of households surveyed was 800, 133 of those surveyed said they like $\pi$.  Test the claim that more than 15% of the households like $\pi$.  Use a .05 significance level.

What is the test statistic?

z=___

amistre64 · Answer

my question comes in later ... :)

amistre64 · Answer

attachment

amistre64 · Answer

|dw:1316526687628:dw|

amistre64 · Answer

i wonder if that humpback is right

anonymous · Answer

I think z = 0.39 ( http://www.mathsisfun.com/data/standard-normal-distribution-table.html)

anonymous · Answer

Except that's not a normal distribution!

amistre64 · Answer

1.287 is what i get if i follow the instructions on the website i got it from

amistre64 · Answer

http://www.mathsisfun.com/handle-404-sorry.php?uri=%2Fdata%2Fstandard-normal-distribution-table.html%29&ref=http%3A%2F%2Fopenstudy.com%2Fgroups%2Fmathematics

anonymous · Answer

/shrug

anonymous · Answer

I guess it's just 0.15 because that's already a percentage, it doesn't need to scale.

amistre64 · Answer

i think i understand my gap in thought ...

when we ratio the 133 with the 800 we get a percentage; then the percentage given is on par with it ....

amistre64 · Answer

right

anonymous · Answer

Hooray!