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Probability Math Statistics

02/16/21

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. Find the probability that a worker selected at random makes between $300 and $350.

I need to the percentage.

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Probability Math

02/16/21

I need help understanding the steps to take for each question please!

The executives in a company are four women and three men. Three are to be chosen at random to attend a management seminar.(a) If one of the executives is chosen at random to draw the names out of a... more

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Probability

02/16/21

Consider two random variable X and Y

Consider two random variable X and Y with following relationY = 2X+3The probability distribution of X is given as follows:X 3 4 6p(X) 0.3 0.4 0.3Find mean and variance of distributions X, Y.

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Probability

02/16/21

Elementary probability

A box contains 3 black balls, 2 white balls... A ball is picked from the bag and then replaced, a second ball is chosen, what is the probability that 1. They are both black. 2. One is black and one... more

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Probability Math Statistics

02/16/21

Card Probability

what is the probability that EXACTLY, not at LEAST, but EXACTLY,1 out of 3 cards is a spade, with the three cards drawn from a 52 card deck?

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Probability

02/14/21

What is the 80th percentile for this exam?

Standard deviation 16Mean Score 100

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Probability

02/14/21

What percentage of the population scored between 80 and 110 points on this exam ?

Mean Score 100Standard Deviation 16

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Probability

02/14/21

What percentage of the population scored over 80 points on this exam

Standard deviation (16)Mean score (100)

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Probability Statistics

02/14/21

If x is normally distributed with mean µ and standard deviation σ, and given that the probability that x is less than 32 is 0.0228, find the value of µ.

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Probability

02/13/21

What is the probability of rolling a sum of 11 on a standard pair of six-sided dice? Express your answer as a fraction or a decimal number rounded to three decimal places, if necessary.

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Probability Statistics Ap Statistics

02/13/21

Slow pitch baseball, mean:28 and standard deviation:2.1. Wooden baseball, mean:33 and standard deviation:3.2. Find probability that a slow pitch softball bat weighs more than a wooden baseball bat?

The distribution of the weights of slow pitch softball bats and wooden baseball bats are each approximately normal.

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Probability Statistics Z Score

02/12/21

Statistics question HELP

Every year "Nathan's hotdog stand of Coney Island NY holds a hot dog eating contest. Assume the that number of hot dogs eaten by contestants last year was normally distributed with a mean of 40 and... more

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