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:
250p-195
Step-by-step explanation:
did the quiz
Answer:
Not if you want it to be a positive number. You can but it will be a negative.
Step-by-step explanation:
100-24=76
76%=76/100=0.76
single multiplier=0.76
Answer:
.08
Step-by-step explanation:
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