hey all can anyone help me with these problems?
1)a die is tossed 150 times, the rolling of a 6 is counted as a success:
a) find the mean and standard deviation of this binominal experiment and
b) what is the probability of throwing between 30 and 35 sixes?
2) the mean weight of a group of 200 people is 74kg. the standard deviation is 9kg. what is the probability that a person selected at random weighs:
a)between 90 and 100kg?
b)between 70 and 100kg?
c)is over 101kg?
d)weighs less than 65kgs?
e)how many in the group would weigh less than 65kgs?
any help will be appreciated.....thanks