To solve this, we use the z test.
The formula:
z = (x – u) / s
where x is sample value = 20, u is the mean = 15, and s is
the standard deviation = 2.5
z = (20 – 15) / 2.5
z = 2
Since we are looking for values greater than 20, this is
right tailed test. We use the standard distribution tables to find for P.
P = 0.0228
Therefore:
number of students = 100 * 0.0228 = 2.28
<span>2 to 3 students will get greater than 20 measurement</span>
Answer:
whatttt!!!!!!!!!!
Step-by-step explanation:
Answer:
6.1923849e+12
Step-by-step explanation:
If you go left to right (9x9) x (9x9) You can get the same answer. It will extend further But you get the point right?
Answer:
no
Step-by-step explanation:
y=mx+b
hope this helps
Answer:
14$ times 12 hours =
168$
168$ times 4 weeks = 672$
Step-by-step explanation: