Answer:
45+25 is 65 in tens you would 6 tens and five ones does this help idrk
Step-by-step explanation:
Answer:
b) A person is chosen at random from the choir.
Work out the probability that the person.
Work out the probability that the person does not wear glasses
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: positive: 1; negative: -1, -2, -3
Step-by-step explanation: 1 is greater than -2 and less than 2
-1, -2, and -3 are all greater than it equal to -3 and less than 2
45÷50=90%
if that is what you are looking for
