Introductory statistics, probability (standard distribution, binomial distribution)
Not sure if I'm allowed to put more than one question in each, but lets go:
A coffee machine fills a cup with a volume of coffee standard distributed with an expected 2.1dl and a standard deviation of 0.15dl. The cups used take a volume of coffee with an expected value of 2.5dl, with a 0.1dl deviation. The cup and coffee machine are independent. What is the probability of the coffee overflowing?
The probability of a customer having a bad experience with an online store is 21%. Consider the 180 next customers. What's the probability at most 27 of them have a bad experience. (with and without continuity correction)
A stockbroker picks stocks for a client. Some stocks are "good", some are not. The picks are independent and the broker has constant probability (p) to pick a "good stock". "Good stocks" are binomially distributed. It is known that 9/26 have been winning stocks in the past. Decide a point estimate for P.
Answer
- The questioner was satisfied and accepted the answer, or
- The answer was disputed, but the judge evaluated it as 100% correct.
1 Attachment
Erdos
- answered
- 465 views
- $4.90
Related Questions
- Number of different drinks that can be made using 6 ingredients
- Statistics problem
- Writing a conclusion about data shown in Xbar and R control charts
- How do I meaningfully display Kruskal Wallis Data when I have a lot of zeroes?
- Determining which excel T-Test to use
- Questions for Statistics Project
- Explain how the binomial probability equation is $\frac{n!}{x!(n-x)!}(p^x)(q^x)$
- How to use bootstrap techniques to criticise a linear model?
