b is the answer...
The graph will be continuous because there can be any number of people signing up each day since we are only given the average.
This question is incomplete, the complete question is;
A certain organization reported the following scores for two parts of the scholastic Aptitude test ( SAT)
Evidence-based Reading and writing : 533
Mathematics : 527
Assume the population standard deviation for each part is σ = 100.
What is the probability a sample of 66 test takers will provide a sample mean test score within 10 points of the population mean of 533 on the Evidence-based Reading and Writing part of the test?
Answer: the required probability is 0.582
Step-by-step explanation:
Given that;
Population mean = 533
sample size n = 66
population standard deviation σ = 100
σ of x bar = 100/√66 = 12.3091
Normal distribution with mean 533 and SD of 12.3091
P( 523 <x< 543 )
Z = 10 / 12.3091
Z = 0.8124, -0.8124
P( z < 0 0.8124) - P( z < -0.8124) { from table}
⇒ 0.7910 - 0.2090
= 0.582
Therefore, the required probability is 0.582
Answer:
I don't get it. Sorry
Step-by-step explanation:
Answer:
The absolute value of 3/8 is also 3/8.
Step-by-step explanation:
Because if the value is positive it is its own absolute value. And if the value is negative then remove the negative sign.
Statement given :
→Sara says "If you subtract 11 from my number and multiply the difference by -3 , the result is -54 .
<u>To</u><u> </u><u>f</u><u>ind</u><u> </u>:
SOLUTION :
Let us take Sara's Number be “x”.
★According to Question,
→ x - 11×(-3)= -54
→ x + 33 = -54
→ x = -54-33
→ x = (-87)
let's verify our number,and check whether it's correct or not !
x - 11×(-3)= -54
<u>Putt</u><u>ing</u> <u>the</u> <u>value</u> <u>of</u> <u>x</u>
(-87) - 11 × (-3)= -54
(-87) + 33 = -54
(-54) = -54
Hence, The L.H.S. = R.H.S.
Thus,our number is Verified.
