The total number of students in 8th grade will be the sum of number of all students shown in the Venn Diagram, as the students in 8th class are the Universal set in this case.
So, total number of students in grade 8 = 34 + 14 + 44 + 15 = 107
Number of students who are taking either of these subjects as elective are shown in the colored regions and are equal to = 34 + 14 + 44 = 92
Probability of a student chosen at random taking either of these subjects as an elective = Student taking these courses as elective / Total number of students
So,
Probability of a student chosen at random taking either of these subjects as an elective = 92/107
Thus option B gives the correct answer.
Answer:
Step-by-step explanation:
We want to simplify
Expand the parenthesis to get:
The LCD is 36
We express each term with denominator of 36
Simplify
Answer:
Option b.
Step-by-step explanation:
Sample size n = 9
sample mean = 217.222
Standard deviation s = 1.202
alpha a = 0.025
H0 : u = 216
H1 : u > 216 ( claim)
Now run a T test and result is :
Test statistic, t =
t =
=
t = 3.0509
Critical value = t(a,n-1) = t(0.025,9-1)
= 2.306
Since t > critical value, Hence reject H0.
Option b. is the answer. Yes, because computed t is greater than the critical value.
Answer:
im gonna guess like 600lbs
Step-by-step explanation:
THERE WASNT A FULL QUESTION!!!!!!!
Sorry i dont understand the question. which ones are the answer choices?