Answer:
Correct option:
"z requires that you know the population standard deviation σ which may be unrealistic."
Step-by-step explanation:
The hypothesis test for significant population mean <em>μ</em> can be done either using the <em>z</em>-distribution of <em>t</em>-distribution.
Both the distribution require certain conditions to be fulfilled to use.
For using a <em>z</em>-distribution to perform a hypothesis test for <em>μ</em> the conditions to fulfilled are:
- Population is Normally distributed.
- The population standard deviation is known.
- The sample selected is large.
For using a <em>t</em>-distribution to perform a hypothesis test for <em>μ</em> the conditions to fulfilled are:
- Population is Normally distributed.
- The sample selected is randomly selected.
If the population standard deviation is not known and we have to compute the sample standard deviation then use the <em>t</em>-distribution to perform the test for population mean.
Thus, the correct option is:
"z requires that you know the population standard deviation σ which may be unrealistic."
Answer:
Step-by-step explanation:
First box:4/52
Second box:4/52
Third box:4/52, 4/52, maybe u combine it
Fourth box:4/52, 4/51
Fifth box:4/52, 4/52 or combine
Sixth box:4/52,4/51
Seventh box:8/52, 8/52, or combine
( hope this helps )
Answer:
o.15 :)
Step-by-step explanation:
Vertical means in the y-direction
Stretch by factor of 8 means everything is multiplied by 8
so g(x) = 8 * f(x)
= 8 * (3/4 x^2 -1)
= 8*3/4 x^2 - 8*1
= 6x^2 - 8
