The average of the first three is 83 (85 + 90 + 74)/3
The average of the next 3 is 86.
The difference is 3
Answer:
The probability is 0.9938
Step-by-step explanation:
In this question, we are asked to calculate the probability that the mean blood pressure readings of a group of people is less than a certain reading.
To calculate this, we use the z score.
Mathematically;
z = (mean - value)/(standard deviation/√N)
From the question, we can identify that the mean is 125, the value is 123 , the standard deviation is 9.6 and N ( total population is 144)
Let’s plug these values;
z = (125-123)/(9.6/√144) = 2.5
Now we proceed to calculate the probability with a s score less than 2.5 using statistical tables
P(z<2.5) = 0.9938
You could multiply 118.56 by .16 which is 19 dollars rounded and subtract 19 from 117.56 to get your answer
Answer:
7 1/4
Step-by-step explanation:
12 3/4- 5 1/2
Answer:
A
Step-by-step explanation:
The area of everything greater than and equal to 2.
Make sure the line is not dotted if it equal a number.
