binomial distributions

Statistics
Tutor: None Selected Time limit: 1 Day

Javier volunteers in community events each month. He does not do more than five events in a month. He attends exactly five events 35% of the time, four events 25% of the time, three events 15% of the time, two events 15% of the time, one event 5% of the time, and no events 5% of the time.

actual question

Find the probability that Javier volunteers for less than three events each month. (Enter an exact number as an integer, fraction, or decimal)


 

P(x < 3)
Sep 29th, 2015

Thank you for the opportunity to help you with your question!

for less than three events, the cases include 0 events, 1 event , and 2 events.

so the required probability is : 15/100 + 5/100 + 5/100

so the total required probability is : 25/100= 25%

Please let me know if you need any clarification for the doubts. I'm always happy to answer your questions. Looking forward to help you again. thank you. :)
Sep 29th, 2015

The chance of an IRS audit for a tax return with over $25,000 in income is about 2% per year. Suppose that 100 people with tax returns over $25,000 are randomly picked. We are interested in the number of people audited in one year. Use a Poisson distribution to answer the following questions.

Give the distribution of X. (Enter an exact number as an integer, fraction, or decimal.) 

Oct 1st, 2015

this is a different question. how will you pay me for this?

Oct 2nd, 2015

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Sep 29th, 2015
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Sep 29th, 2015
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