Multiply -22x10 then multiply -22 by 10^1
A) 1104/ 138 = 8
B) 1st = 30/2 = 15, 2nd = 15/2 = 7.5, 3rd = 7.5/2 = 3.75, 4th 3.75/2 = 1.875, 5th = 1.875/2 = 0.9375, 6th = 0.9375/2 = 0.46875, 7th = 0.46875/2 = 0.234375, 8th = 0.234375/2 = 0.117 = 0.12
Answer is B
Answer:
Kindly check explanation
Step-by-step explanation:
Given the data:
Number of Home alone movies (X)
Watched probability, p(x)
X : ___ 0 ____ 1 ____ 2 ____ 3 ___ 4 ___ 5
P(x) : _0.15 __ 0.42 __0.32 __? ___0.02 _0.01
a. Write the event "the student has seen 3 Home Alone movies" using probability notation. Then find this probability.
P(x = 3)
Since Σp(x) = 1
P(x =3) = 1 - (p(0)+p(1)+p(2)+p(4)+p(5))
P(x = 3) = 1 - (0.15 + 0.42 + 0.32 + 0.02 + 0.01)
P(x = 3) = 1 - 0.92
P(x = 3) = 0.08
b. Explain in words what P(X > 3) means. What is this probability?
P(x > 3) is the probability they a randomly chosen student has watched more than 3 home alone movies.
P(x > 3) = p(4) + p(5)
P( x > 3) = 0.02 + 0.01 = 0.04
d. Calculate and interpret the expected value of X.
E(X) = [Σ(X * p(x)]
(0*0.15) + (1*0.42) + (2*0.32) + (3*0.08) + (4*0.02) + (5*0.01) = 1.43
The avereage number of home alone movies watched is 1.43
Answer: Priya enjoyed a 40% discount
Step-by-step explanation:
The key information in the question:-
*** The normal cost of a pair of earrings is $22
*** Priya eventually purchased the pair of earrings for only $13.20
*** We are required to calculate the percentage discount.
Discount generally refers to the reduction from the usual price of something. In this scenario, since Priya bought the pair of earrings for only $13.20 instead of the usual $22, the discount that Priya enjoyed =
$22.00 - $13.20
= $8.8
To calculate the percentage discount that Priya enjoyed, we divide the discount by the normal price and then multiply the result by 100
= (8.8/22) × 100
= (88/220) × 100
= 0.4 × 100
= 40%
Therefore, Priya enjoyed 40% discount on the price of the pair of earrings.