Hypothesis Testing - A claim is made that the mean of a set of data will be 4.7. In a test of the claim, the mean after 49 trials is 5, with a standard deviation of 0.5. Which of the following numbers is the z-value of the given data? Round to the nearest hundredth.

Question

Hypothesis Testing - A claim is made that the mean of a set of data will be 4.7.  In a test of the claim, the mean after 49 trials is 5, with a standard deviation of 0.5.  Which of the following numbers is the z-value of the given data?  Round to the nearest hundredth.

amistre64 · Answer

define Ho and Ha in order to run the claim setup

amistre64 · Answer

or if you got a ti83 ... run a z interval

amistre64 · Answer

z-test that is

amistre64 · Answer

$$z=\frac{\bar x-[claim]}{\sigma \sqrt n}$$

anonymous · Answer

$$z = \frac{ x - 2 }{ \frac{ o }{ \sqrt{n} }}$$ all i know is this so far

amistre64 · Answer

5-4.7 , not x-2

anonymous · Answer

i meant the u sign

anonymous · Answer

how do i know what i plug in where ?

amistre64 · Answer

the claim is 4.7 so we are using that as a mean to test from|dw:1386892307527:dw|