There are some things that need to be set forth for this week. First, hypothesis testing is absolutely critical to know and understand so take the extra time needed to make sure you get the process down. Second, the assignment for week 7 is only asking for writing the null and alternative hypothesis for a one-tailed and two-tailed test. It says nothing about doing any calculations or conducting a seven step process. This is a very straightforward assignment to help accumulate some much-needed points toward the final grade so please do not make it more complicated than it is.
Lastly, the only calculations will be in part III in determining the proper sample size in that if it is a two group (sample), the sample size will need to be doubled.
As mentioned, the assignment is straightforward and pretty much it is what it states so please do not carry it beyond that—rounding rules are not in effect for this assignment since the numbers are already provided.
The assignment is designed to get you thinking how to write a null and alternative hypothesis for both one tailed and two-tailed tests. Please pay attention on how to statistically write both, especially the one-tailed test.
Writing out the hypotheses will not be accepted. For example, if you write 'null hypothesis' or 'alternative hypothesis' instead of using the statistical format Ho or Ha, points will be deducted because you need to learn how to insert these symbols into the content such as:
Ho: µ = 1000
Ha: µ ≠ 1000
and not u equals 1000 or u does not equal 1000. This will not be acceptable as you need the = and ≠ signs.
Also, please pay close attention to the direction of the arrows on the one-tailed test because many people have a tendency to reverse them. As you watch the videos, in a one-tailed test, the direction of the arrow will follow the Ha as the Ho will always indicate no difference (=). Then, you place the opposite arrow in the Ho to mathematically account for all differences. So, if the Ha is > then the Ho will become