Answer:
(-26, 32)
Step-by-step explanation:
Answer:
The Estimate the number of students who took the scores between 82 and 98 = 16
Step-by-step explanation:
<u><em>Explanation</em></u>:-
Given data The scores on a math test are normally distributed with a mean μ = 74
standard deviation of Population
S.D (σ) = 8
Let 'x' be the random variable of Normal distribution
<u><em>case(i)</em></u>:- when x = 82


<u><em>case(ii)</em></u>:- when x = 98


The probability that test scores between 82 and 98.
P(82≤x≤98) = P(1≤z≤3)
= P(z≤3) - P(z≤1)
= 0.5+A(3)-(0.5+A(1))
= A(3) -A(1)
= 0.4986 - 0.3413
= 0.1573
<u><em>Final answer</em></u>:-
The Estimate the number of students who took the scores between 82 and 98
= 100 X 0.1573 = 15.73 ≅16
Answer: 13.) 49, 14.) 64
Step-by-step explanation:
7x7=49, 8x8=64
9514 1404 393
Answer:
9 years
Step-by-step explanation:
The simple interest formula is ...
I = Prt
where I is the interest earned on principal P invested at annual rate r for t years. Solving for t, we have ...
t = I/(Pr) = 1125/(2500×.05) = 1125/125
t = 9 . . . . years
It will take 9 years for Anna to earn 1125 in interest.
Answer:
Depends on the angle's degrees
Step-by-step explanation:
You haven't uploaded a picture so here's a tip for looking at angles. If the angle makes a square, its 90 degrees and therefore a right angle. If it is any more than that, it is obtuse, and it it is less, than it is acute.