Brennan H.

If one event has an 80% of occuring. Whats the probability of that event occuring if repeated 2,5,10 times. In other words if 5 events all with 80% probability of occuring ran simultaneously what... more

A sample of size =n70  is drawn from a normal population whose standard deviation is =σ 8.2. The sample mean is x= 49.35(a) Construct an 80%  confidence interval for the mean

assume that the scores are normally distributed with a mean of zero and a standard deviation of one. A) if p(z<a) = .9599, find a. B) if P(z>b) = .9772, find b. C) if P(z>c) = .0668, find c

Identify the null and alternative hypothesis(in symbolic and sentence form), test statistic, P-value(or critical values), conclusion about the null hypothesis, and final conclusion that addresses... more

Is it possible that a confidence interval for population proportion will contain values less than 0 or greater than 1.If yes, please provide an example.If no, please explain why.

At Cityville High School, 36% of the students participate in sports, 36% of the students participate in academic clubs, and 13% of the students participate in both sports and academic clubs.Find... more

Taken from Sal Khan's lecture https://www.youtube.com/watch?v=oiDvNs15tkE of the Khan academy, if I know that dN/dt=rN(1-(N/K)) (the logistic differential equation) How can I solve for N and plot... more

There are 4 different coloured counters, red, blue , yellow or green. The probability for red= 0.10 Blue=0.25 Yellow=0.35 ... more

I have a list and I want to remove a single element from it. How can I do this?I've tried looking up what I think the obvious names for this function would be in the reference manual and I haven't... more

I feel quite silly asking this (especially seeing as how this is the second time I have done so, having asked a slightly different question before), I just have seemingly forgotten all of my... more

I have a bunch of columns in a dataframe which I want to paste together (seperated by "-") as follows: data <- data.frame('a' = 1:3, 'b' = c('a','b','c'), ... more

I want to use R in Python, as provided by the module Rpy2. I notice that R has very convenient `[]` operations by which you can extract the specific columns or lines. How could I achieve such a... more