10 Answered Questions for the topic Statistics Formula

04/09/18

Probability question for Stats class help.
Suppose that we have  15 marbles in a jar. 7 of them are green, 2 of them are blue, and the rest are red. 1)What is the probability that the first marble we draw is blue?2)Suppose you drew a blue... more
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Statistics Formula

02/13/18

How many passwords are possible?
A login password consists of four characters. The characters may be chosen from letters of the alphabet, numbers, or out of six special characters (#, %, _ , ! ,@ ,or *). The first character may... more
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Statistics Formula

02/11/18

How to find the expected value - when to know when to use net value
There is a problem I've encountered:   If a gambler rolls two dice and gets the sum of 7, he wins $20. If he gets a sum of 4, he wins $40. The cost of playing is $14. What is the expectation of... more
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Statistics Formula Statistics Statistics Question Stats

10/01/17

how do I solve this?
74 566 681 852 1173 1262 1552 1645 1762 1846 1860 1946 2038 20y=31.934+(-0.304)x An ecologist uses the line, based on 13 colonies, to predict how many new birds will join another colony, to which... more
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Statistics Formula

03/24/17

How do you find the corresponding z score
Find the z score such that the area under the standard normal curve to the left is 0.66
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Statistics Formula

01/26/17

population mean from sample?
A random sample of 49 observations is taken from a normal population with a variance of 100. The sample mean is 25 . Find the unbiased estimate of the population mean
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01/12/17

500 marketers selling 9 different products to 60 million customers. Equal Capability for daily customer reach in 30 days.
There are 500 marketers promoting 9 different products to 60 Million customers. They all have equal capability to reach 6,000 of the customers daily and start promoting on the exact same day. What... more
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11/16/16

What is this formula for in the mathematic point of view?
I have derived a formula and I wonder what formula is similar to this one in a mathematical point of view?   F = (X2 - Y2)/ (X - Y )2   Is there any formula that looks like this one and is used... more
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10/15/16

Please, answer with the full solution! Thanks for the help!
Readings on a thermometer are normally distributed with a mean of 0C and a standard deviation of 1.00.What is the probability that a randomly selectedthermometer reads: • Less than 0.53.• Greater... more
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Statistics Formula

10/22/14

which Statistics formula for which problem,how can i find it
sir, i want to know to use which Statistics formula for which problem,how can i find it mohan india
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