Probability / Statistics

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Probabilty of 3 events
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0
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528
Fiorello
F
R
Probability Normal Distribution
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6
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1K
reggiwilliams
R
É
Probability of having two classes back to back
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2
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1K
Steven G
Steven G
J
How to calculate the variance of a sample mean distribution with alternating weights?
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1
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919
blamocur
blamocur
O
Could I reduce sample size while maintaining confidence by tightening PASS criteria?
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0
Views
591
ori elyada
O
G
Is there a formula that predicts the amount of digits of the multiplication of two very large numbers?
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18
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3K
gegogabanana
G
M
Central Limit Theorem Slight Misunderstanding ?
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1
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797
Dr.Peterson
Dr.Peterson
P
Find z such that 5.5% of the standard normal curve lies to the left of z. (Round your answer to two decimal places.)
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1
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1K
Dr.Peterson
Dr.Peterson
R
Arithmetic: Solve (n+1, 2) = (n, 1) + 4(7, 1)
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3
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1K
blamocur
blamocur
M
Simple Short Question about Probability: lottery consists of 200 tickets and two prizes. 1st prize ticket is drawn and then, w/o replacement,...
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6
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3K
Masaru
M
Win_odd Dhamnekar
Queuing theory: At a computerized Rail Reservation window, the customer arrivals are considered to be Poisson with an average inter-arrival time of...
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0
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822
Win_odd Dhamnekar
Win_odd Dhamnekar
B
Binomial distribution probability: 800 families with 4 kids each; How many families would be expected to have 1) at least 1 boy 2) at most two girls,
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1
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922
BeachBanana
BeachBanana
S
997 million permutations ?!? (my state has a pick 3 game if numbers in order the top prize is 500.00 for 1 dollar. )
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6
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2K
Steven G
Steven G
J
Poisson Distribution: One event happens once every 29 seconds on average, and another event happens once every 396 seconds on average.
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1
Views
816
BeachBanana
BeachBanana
W
Finding an equation to a permutation combination question: “Using only three beads, how many different numbers can be made on a three line abacus?”
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4
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2K
Harry_the_cat
Harry_the_cat
F
Hard question: x satisfies the equation 1 / ? =1 /2017^2 +1 / 2018^2 + ⋯ +1 / 4030^2; which of 2016, 2017, 3024, 4037 is closest to x?
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4
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4K
Dr.Peterson
Dr.Peterson
A
Completely lost of the usage of Binomial Probability Distribution. (" Car color preferences change over the years...")
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4
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1K
Dr.Peterson
Dr.Peterson
A
Poisson distribution: Given mean = 3.1, X values 2,3,4,5,6; calculate what percent of data is for each of X-value
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1
Views
819
BeachBanana
BeachBanana
L
A farmer brings produce to the farmer's market and records whether people buy lettuce, apples, both, or something else. Complete the table below
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6
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2K
lu346
L
L
Not sure how to do this problem: "Researchers at a media company want to study news-reading habits among different age groups."
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3
Views
1K
Dr.Peterson
Dr.Peterson
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