Geometric Distribution

What is the probability the first person with AB blood at the blood drive will be the 12th donor?

• .0001

• .0255

• .6382

• .2553

Given 13% of people are left-handed.  What is the probability the first left-handed person will be the sixth person polled?  

• .0564

• .1116

• .0001

• .0648

The probability that a salesman will make a sale on any given call is .23.  Find the probability that his first sale will occur on his fourth or fifth call.

• .1050

• .0809

• .1859

• .8141

The probability that Jalen makes a free throw is 75%. What is the probability he makes his first free throw on his third attempt?

• geometcdf(3, 0.75)

• geometpdf(0.75, 3)

• geometpdf(3, 0.75)

• geometcdf(0.75, 3) 

If we want to calculate the probability of rolling a 6 for the first time on the 6^th roll of a die, would we use the geometric or the binomial distribution?

• geometric

• binomial

If X →Geometric distribution & mean of X is 1, then parameter of geometric distribution is ------

• 0.4

• 0.5

• 0.6

• 0.25

If you want to know how many trials you will need before your first success, use the ------ model.

• Geometric

• Binomial

• Normal

• Calculator

Which of the following distribution satisfy the lack of memory property?

• Poisson

• Geometric

• NBD

• Binomial

If you want to know how many trials you will need before your first success, use the ????? model.

• Geometric

• Binomial

• Normal

• Calculator

Is this a geometric random variable?

There are 20 fish in a lake, five trout and fifteen bass. You won't stop catching fish until you catch a trout. After you catch each fish, you throw it back. Once you get a trout, you will stop fishing. Let "x" = how many fish you catch.

[Assume all fish are equally likely to be caught.]

• Yes

• No