statistic

A city council is considering drafting legislation related to the exclusion of renters with children. Since implementation will be expensive, they will only consider proceeding if the true proportion of apartments that prohibit children is more than 75 percent. Suppose that out of 125 sampled...

Can anyone help me? For example, I have a store, 4 people bought iPhones and each buyer bought accessories too. Buyer#1: 1 iPhone, 4 accessories Buyer#2: 2 iPhone, 6 accessories Buyer#3: 2 iPhone, 4 accessories Buyer#4: 4 iPhone, 9 accessories What is correct: 1. The Ratio of...

suppose X1,X2,…,Xn is a random sample of distribution with positive values where E(X)=Var(X)=1. We show order statistics of this random sample with Y1,Y2,…,Yn. How can show 1. E(∑(Yi/Xi))≥n 2. E(∑YiXi)≤n+n2

This strikes me as an interesting (though potentially tricky) lottery question that I'm having trouble getting my head around. Many state lotteries provide 'ball history' tables on their websites listing each number and the draws that have elapsed since it last came out. Players then tend to...

I am very confused on my statistics and probability class and i need some help im using the R program i understand a little bit but there are some problems that give me headache. Ex: Question: Suppose there are 10 students attending a class in the computer lab. Determine the probability that...

Can someone tell me if this is correct? four American, three Italians and three Germans are seated at random in a row. what is the probability that 1) those of the same nationality are seated together? 2)Germans are seated together and non-German are seated together solution: sample space 10...

suppose X_1,…,X_n be a random sample of distribution with probability density function f(x)=2/θ *x* exp(−(x^2)/θ),x>0. how can i find UMVU estimator of θ^2

suppose X_1,X_2,…,X_n,X_{n+1} be a random sample of distribution N(θ,1). if γ(θ)=P(∑Xi>X_{n+1}) (i=1,2,...,n) how can i find UMVU estimator of parameter γ(θ)

Thanks again for the help. Only had time to do spearman's but worked out well

Hi I need help analyzing data from a survey. i am looking at consumers shopping venue and their confidence in regulation by various industry players. Shopping venues question: please choose your top 3 shopping venues (1 for each and zero for those not chosen) Confidence questions: How...

Let x1,x2,…,xn be a random sample from the normal distribution N(θ,σ^2), where θ has distribution N(μ,τ^2) and where σ^2, μ and τ^2 are known. Find a Bayes estimator δ of θ under the loss function L(θ,δ)=1−exp(−(δ−θ)^2/2γ^2) where γ is known

Hi let x1,x2,...,xn be a random sample from distribution in under function distribution . F(x)=[(x/θ)]^β , 0≤x<θ where β is unknown and θ is known find a unbiased confidence interval in level (1-α) for β

Hey everyone. I have a simple problem and was hoping to get your advice with. I am trying to correlate a continuous variable with a binary one. Let's say the binary variable represents a Yes/No option and the continuous just a number between 1-100. How should I go about doing that? I...

Hi, I need help in knowing which test to perform with this analysis. I have two groups (lets say group A and B). A study was performed with initial rates of heart failures in group A and B (i.e, baseline rates) were measured. After 6 months of follow up the heart failure rates in group A and...