propability!!!

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Math
What is the propability that a random sample of 30 days in august has a mean high tempature less then 78 degreese?

Math
There are 40 tags numbered one through 40 in a bag. What is the propability that Glen will randomly pick a multiple of 5 and then a multiple of 9 without replacing the first tag?

propability
In basketball, Nicole makes 4 baskets for every 10 shots. If she takes 3 shots, what is the probability that exactly 2 of them will be baskets?

statistics
What is the probability that the following system works if each unit fails independently with probability p? ____o_____o_____ | | _______o________ | | ____o_____o_____ Note: In the above circuit "o" represents 5 relays in the circuit with propability p

propability
Lorenzo has a jar with 21 green olives and 15 black olives in it. If he takes two olives out of the jae with replacement,what is the probability that the first olive will be black and the second olive will be green?

propability
Albino rats used to study the hormonal regulation of a metabolic pathway are injected with a drug that inhibits body synthesis of protein. Usually, 4 out of 20 rats die from the drug before the experiment is over. This time round, 10 animals are treated with the drug. What is ...

Propability
Briefly summarize the experimental design for deciding whether a proposed treatment should go on for further study. Note where independence came into play. If you were more conservative and reject the treatment only if the probability that it is 30% effective is less than .05 ...

statistics
In a statistics class of 45 students, 12 have a strong intrest in statistics. If two students are selected at random from this class, what is the propability that both of them have a strong interest in statisitcs?

propability!!!
A certain professional soccer team runs a 4-4-2 formation on the field. This means they play with 4 defenders, 4 midfielders, 2 forwards, and 1 goalkeeper on the field. If the team has 6 defenders, 5 midfielders, 3 forwards, and 2 goalkeepers, how many different groups of 11 ...

math
A bag soccer balls contains 8 balls with black design and 7 balls with red design with no other types of soccer balls. Coach graves reaches into the bag and randomly pulls out two soccer balls. please check my answer a) explain these events are either dependent or independent...

algebra...urgent help
A bag soccer balls contains 8 balls with black design and 7 balls with red design with no other types of soccer balls. Coach graves reaches into the bag and randomly pulls out two soccer balls. please check my answer a) explain these events are either dependent or independent...

Statistics
Survey of 115 families chosen at random, having 5 children it was observed that the distribution was as follows The 5 children are girls is 6 There is one boy and four girls is 18 There are two boys and three girls is 35 There are three boys and two girls is 30 There are four ...

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