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Probability Distribution

04/05/16

If 55% of companies in victoria island own an answering machine, what is the probability that 3 of the next 4 randomly selected companies in victoria island wil

If 55% of companies in victoria island own an answering machine, what is the probability that 3 of the next 4 randomly selected companies in victoria island will own an answering machine?

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Probability Distribution

04/05/16

A red die and a green die are rolled once. Find the conditional probability that the number on red die is odd, given that the sum of the two numbers showing is

A red die and a green die are rolled once. Find the conditional probability that the number on red die is odd, given that the sum of the two numbers showing is 9

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Probability Distribution

04/05/16

If a woman has 10 blouses, 6 skirts and 4 pairs of shoes, in how many ways can she choose two dresses and two pairs of shoes assuming any combination of blouse,

If a woman has 10 blouses, 6 skirts and 4 pairs of shoes, in how many ways can she choose two dresses and two pairs of shoes assuming any combination of blouse, skirt and pair of shoe matches.

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Probability Distribution

04/05/16

A bus starts with 8 people and stops at 9 different stops.how many different ways can the 8 people depart if no two passengers can leave at the same bus stop

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Probability Distribution Correlation Standardized Distribution

01/26/16

Jointly Distrubuted Random Variables

Let X and Y be jointly distributed random variables with correlation ρXY ; define the standardized random variables X ~ and Y ~ as X ~ = (X − E(X))/ Var(X) and Y ~ = (Y − E(Y ))/ Var(Y ). Show that... more

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Probability Distribution Probability Normal Distribution

01/26/16

Probability Distribution of two normally distributed independent random variables.

If X~N(10,3) and Y~N(15,8), and if X and Y are independent, what is the probability distribution of1. X +Y2. X-Y3. 3X4. 4X + 5YIf X and Y are positively correlated with a correlation coefficient of... more

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Probability Distribution

12/09/15

bay's theorem based quesion

in a university office two clerks are working to checking application form.on an average the first clerk 60percent while clerk second check remaining .the error rates are by and first and second... more

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Probability Distribution

11/19/15

if a set of observations is normally distributed, then the percentage of observations from mean by less than 0.52 (standared deviation)

options a) 69.85 b) 90.32% c) 39.7% d) none

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Probability Distribution

08/18/15

Finding the Probability and cumulative distribution of a Random Variable.

Find the distribution (for real a find (P({ω:X(ω)=a})) and the cumulative distribution function of X defined on Ωcoin toss by X(Heads)=1, X(Tails)=-1 (for each real a find the value of... more

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Probability Distribution Statistics Probability Normal Distribution

06/25/15

How to find probability using only mean. Do I assume a std. dev. or certain probability distribution here?

The average time a customer spends waiting in the check-out line at Wal-Mart is seven minutes. If wait times are independent and constant, what is the probability the customer will spend between... more

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Probability Distribution

06/01/15

Statistics 220

Statistics 220 A group of realtors estimates that 23% of all homes purchased last year were considered investment properties. If a sample of 800 homes sold last year is obtained, what is the... more

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Probability Distribution Problem Solving Continuous Probability Distribution Probability & Statistics

05/19/15

what proportion of a normal distribution is within one standard deviation of the mean

how do i figure out what proportion of a normal distribution is within one standard deviation of the mean

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Probability Distribution Math Statistics Math Help

03/31/15

Compute the Mean & Standard Deviation from percentile values of a distribution

I have been given values for 10%, 50% and 90% of a distribution. From these numbers, how can I compute the mean and standard deviation? I'll give an example....Temperature distribution 10th... more

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Probability Distribution

02/06/15

the lengths of turtles in a park are normally distributed with a mean of 23.2 and a standard deviation of 5.6 inches.

the lengths of turtles in a park are normally distributed with a mean of 23.2 and a standard deviation of 5.6 inches. What is the percentile rank of a turtle whose length is 15 inches. At first I... more

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Probability Distribution

01/06/15

how much more money will anna have when zachs investments are worth $900

Anna and zach each have $600 to invest .Anna's investments earn a rate of 10.5% , and zach's investments earn a rate of 6.5% , approximately how much more money will anna have than zach when zachs... more

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Probability Distribution

09/25/14

If we flipped a coin 10 times, what is the probability that we would get five heads?

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Probability Distribution

09/22/14

If X and Y are symmetric random variables then sow that E(X/X+Y)= 1/2

here E stands for expectation

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Probability Distribution

05/19/14

Probability

About 3/4 of adults say they wash their hands before eating. Use an area model to determine the probability that both your teacher and the governor of your state wash their hands before eating.

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Probability Distribution

04/01/14

Multiple Choice test questions

a test consists of 10 multiple choice questions, each having 4 possible answers, one of which is correct. assume that you guess all 10 answers. find the probability of getting less than 40%

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Probability Distribution Probability Binomial Probability Distribution Poisson Probability Distribution

11/04/13

Binomial Probability Distribution and Poisson Probability Distribution

1. According to a Pew Research Center poll, 40% of American college graduates have outstanding student loans. Suppose that this is true for the current population of American college... more

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