SOLUTION REQUIRED WITH COMPLETE STEPS
A sack contains 30 candies, 5 of the candies are expired....
SOLUTION REQUIRED WITH COMPLETE STEPS
A sack contains 30 candies, 5 of the candies are expired. You
are allowed to pick two candies. Find the probability that both
candies you pick are expired.
Solutions
Expert Solution
Here we use the concept of combinations to solve this
problem
SOLUTION REQUIRED WITH COMPLETE STEPS
A continuous random variable X has pdf ?x(?) = (? + 1) ?
2 , 0 ≤ ? ≤ ? + 1, Where B=7.
a) Find the value of a
b) Find cumulative distribution function (CDF) of X i.e.
?x(?).
c) Find the mean of X
d) Find variance of X.
SOLUTION REQUIRED WITH COMPLETE STEPS
Let X and Y be discrete random variables, their joint pmf is
given as Px,y = ?(? + ? + 2)/(B + 2) for 0 ≤ X < 3, 0 ≤ Y < 3
(Where B=0)
a) Find the value of ?
b) Find the marginal pmf of ? and ?
c) Find conditional pmf of ? given ? = 2
SOLUTION REQUIRED WITH COMPLETE STEPS
Let X be sum of 25 iid random variables, each random variable
has mean 60 and standard deviation 20.
a) Estimate probability of ? ≥ 1700.
b) Estimate probability of 1300 ≤ ? ≤ 1700
PLEASE SHOW ALL WORK AND STEPS
What is the pH of a solution that contains 0.050 M
acetic acid, HC2H3O2 (Ka=1.8 x 10^-5), and 0.05 M hydrocyanic acid
HCN (Ka = 4.9 x 1^-10)?
A volume of 25.06 ± 0.06 mL of HNO3 solution was required for
complete reaction with 0.9781 ± 0.0007 g of Na2CO3, (FM 105.988 ±
0.001). Find the molarity of the HNO3 and its absolute
uncertainty.
A volume of 29.56 ± 0.05 mL of HNO3 solution was required for
complete reaction with 0.8647 ± 0.0008 g of Na2CO3, (FM 105.988 ±
0.001). Find the molarity of the HNO3 and its absolute uncertainty.
*Keep in mind to use the right amount of sig figs.
2H +Na2CO3 -> 2Na + H20 + CO2
Draw an illustration of the problems including the
given & required data. Show the complete solution in legible
handwriting.
1. A 64.80 g ball was fired into a 185.00 g ballistic
pendulum hanging 7.10 cm from the base of the ballistic device. The
ball was trapped in the pendulum bob, and the impact caused the
pendulum to swing to a height of 13.70 cm from the base. Calculate
the a) velocity of the ball and pendulum after impact b) initial...