If I have 7 colors ROGVAIV what is the probability of selecting R (red) twice in two consecutive selections?

More Marușa Pescu Beca's questions See All

Can you recommend a validated instrument for assessing preschool children's competences by learning domains?

Does anyone know of a validated instrument for assessing ECE children's competences by learning domains (math, language, social and emotional skills, science, art, motor/physical domain, social...

11 January 2023 4,917 0 View

Counter power and sociocracy - suggestions for sources?

Can anyone help with accessible literature or article suggestions on counterpower and sociocracy -. in English (preferably in the radical pedagogy framework). So far I've come to Peter Wohlleben...

03 April 2016 7,107 2 View

RNAlater used for preserving DNA?

Hi! I'm wondering about how RNA later works when DNA is the end goal. I am planning to culture some bacteria and send the pellet for genomic sequencing, and I was told it's ok to send the pellet...

15 March 2016 2,438 5 View

Can I store a prepared master mix for RT?

I am using a High-capacity cDNA reverse transcription kit (applied biosystems) and I prepared my mastermix (and a mastermix for the NoRT control). I accidentally prepared twice the amount I needed...

24 January 2016 503 6 View

Could you please provide some sources for the relationship between the fiscal policy and bankruptcy/insolvency/corporate failure?

I can't find some bibliographic sources for the connection between the fiscal policy and corporate failure.

17 July 2015 6,412 4 View

Can you perform panel data analysis if you have a database with thousands of firms across 4 years?

I don't know if I can perform a panel data analysis or dynamic panel data or a GMM if I have only 4 years of data and thousands of individuals (insolvent firms).

25 March 2015 9,544 8 View

What software models a mathematical function for a natural phenomenon taking into consideration some given restrictions?

02 January 2015 7,723 3 View

How can I handle heterogeneity across individuals in a panel data analysis?

I have monthly data from 15 individuals (banks) for 15 years.

09 December 2014 6,597 8 View

"A Markov-like Model for Patient Progression"?

A Markov-like Model for Patient Progression" Markov Chain Monte Carlo (MCMC) Markov Chain Monte Carlo (MCMC) is a powerful computational technique used to draw samples from a probability...

05 August 2024 10,079 0 View

Should I remove an item from a scale to raise Cronbach's alpha and McDonald's omega or is it better to leave it if they are both over .7 already?

Hello! I have this scale which had 10 items initially. I had to remove items 8 and 10 because they correlated negatively with the scale, and then I removed item 9 because Cronbach's alpha and...

01 August 2024 4,606 7 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Posthoc test lettering in JAMOVI?

Does anyone know of a module for the JAMOVI software that is capable of generating mean separations using the classic letters based on post hoc results (e.g., Tukey test)? If, as I believe, such...

31 July 2024 3,333 4 View

Can we eliminate the stress singularity at the tip of the crack by manipulating the elastic constants?

The aim of the research here is to prevent the propagation of the crack in the fabricated elastic medium with useful applications.

25 July 2024 9,976 3 View

Given the current advances in Super Computation and Quantum Computing, what are the missing link between the Applied AI and Ultra Smart Cyberspace?

In recent years, quantum computing has emerged as a groundbreaking technology with the potential to revolutionize various fields, including artificial intelligence (AI). AI has already made...

17 July 2024 1,398 3 View

Suggestion for PhD Research Topic/Topics in Applied Statistics?

Hi All I recently get admission in PhD statistics. After a long discussion with my supervisor, the topic I selected for PhD is " Air Pollution and its impact on Economy: A case study of...

15 July 2024 1,820 5 View

What should I do if a Journal is not included in Researchgate data base?

Is there a way to add new Journals in the system?

03 July 2024 1,691 2 View

How to overlay multiple (more than two) )Ligands/ single crystal xrd structures?

Can anyone know how to overlay 3 or more crystal structure/chamical structures by using any software like olex2, mercury or pymol. Mercury has a option to do.. i want to know the step by step process.

16 June 2024 6,871 0 View

Can cross-slip, twinning and fracture systems, under applied loadings, receive the same mathematical theory?

Cross-slip, twinning and fracture are major deformation modes adopted by loaded materials. It appears sound that these apparently different deformation mechanisms can be analysed on the equal manner!

15 June 2024 8,477 3 View

Pranesh Muddebihal

The probability of selecting red in the 1st selection would be $\frac 1 7$. Given this, and since replacement is allowed, in the second selection, the probability would be $\frac 1 7 \times \frac 1 7 = \frac {1} {49} $

Marek Wojciech Gutowski

The previous answer is correct, if there is exactly one red object among seven. The other colors are meaningless, they all may be even the same. If there are k red objects and 7-k are non-red, then the answer is k2/49.

Bilgi Yilmaz

The answer ok if you are replacing but if you are not then the result will be zero.