The probability that a randomly-selected 2 year old male salamander will live to be three years old is 0.9 567 what is the possibility probability that two randomly selected two year old male salamanders with live to be three years old? what is the probability that nine randomly selected 2-year old male salamanders will live to be 3-years old? what is the probability that at least one of the nine randomly selected 2-year old male salamanders will not live to be 3 years old? would it be unusual if at least one of nine randomly selected 2 year old male salamanders did not live to be 3 years old?

a.

b.

c.

d. It is not unusual

Step-by-step explanation:

Represent the given probability with P(T)

Solving (a): Probability two selected will live to be three years old

This is calculated as:

--- Approximated

Solving (b): The probability that nine selected will live to be three years old

This is calculated as:

  --- Approximated

Solving (c): Probability that at least one of the nine selected will not live to be three years old

To solve this, we need to determine the probability that none of the 9 selected will live to be 3 years old.

But first, we need to solve the probability that a selected male will not live to be 3 years old.

This is represented as: P(T') and is calculated as thus:

The probability that none of the nine will live to be 3 years old is:

So, the required probability is calculated as thus;

Solving (d): Would (c) be unusual

This probability is calculated in (c) above.

Because it approximates to 1, we can conclude that it is not unusual

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get