z statistic or z score can be calculated using the
following formula:
z = (x – u) / (σ / sqrt n)
So simply substitute the given values:
z = (120.4 – 115) / (30 / sqrt 25)
z = 0.90
Answer:
<span>b. 0.90</span>
Answer: domain = 12 students
Range = $60
Step-by-step explanation:
Given that the total dollar amount earned, E. Is a function of the number of members who perform communityservice, n
That is
E(n) = 5n
Since the club earn $5 on each student who does community service,
Domain is independent variable n
While range is dependent variable E
Domain is therefore = 12 students
Range = 12 × 5 = $60
Answer Expert Verified
If a vertical line is drawn then the line will cut at only one point. In first graph for all x values we have different y values so the ordered pairs represent a function.
When lines are perpendicular it’s called parallel, it’s when the lines never touch
