Search
solve the game
Global insurance has found that 20% (1 in 5) of all insurance policies are surrendered (cashed in) before their maturity date. Assume that 10 policies are randomly selected from the policies data base
What is the probability that:
Atleast 2 out of the 10 randomly selected policies will be surrendered before their maturity date?
Global insurance has found that 20% (1 in 5) of all insurance policies are surrendered (cashed in) before their maturity date. Assume that 10 policies are randomly selected from the policies data base
What is the probability that:
No more than 3 of these 10 insurance policies will have been surrendered before their maturity date? No more than 3 orders will be recieved?
Global insurance has found that 20% (1 in 5) of all insurance policies are surrendered (cashed in) before their maturity date. Assume that 10 policies are randomly selected from the policies data base
What is the probability that:
4 of the 10 insurance policies will have been surrendered before their maturity date?
x=1,3,4,5,10
P(X=x)= 0.30, 0.20, 0.10, 0.15, 0.25
Question:
a. What is the range of the variable x?
b. What is P(3<X≤10)
c. What is P(X≥3)
A jewellery store sells bead necklaces. Each necklace costs R40 for the wire and R15 per bead. There exists a linear relationship between the cost of the necklace and the number of beads the necklace has. The cost, C, is dependent on the number of beads, n. The graph that represents this relationship correctly is [1] C n 340 40 20 [2] C n 335 8 [3] C n 340 20 [4] C n
Samples of size 3 are taken from the population 7, 8, 3, 4, 5, 6, 9, 2, 1
with replacement and without replacement. Find
(1) The mean and standard deviation of the population.
(u The mean of each of the sampling distribution of means.
(u) The standard deviation of sampling distribution of
means
2+2
Suppose three cell phones are tested at random where D represent the defective cell phone and N represent the non-defective cell phone. Let X represents the number of defective cell phones that occur. , show the values of the random variable X .
Suppose three cell phones are tested at random where D represent the defective cell phone and N represent the non-defective cell phone. Let X represents the number of defective cell phones that occur. , show the values of the random variable X .
