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1) In each of the following cases. find the mean , variance and standard of the sampling distribution of sample proportion p
p=.5 , n=250
p=.1 , n=100
p=.8 , n=400
p=.98 , n=1.000
Use relative frequencies to estimate the probability that a seed will germinate, What is your estimate?
If campaign can be expected to also to rise the probability of best case scenario to 0.4, is it a good investment.
a) Specify the null and alternate hypotheses for testing that the population correlation is negative. b) Calculate the estimate of the population correlation coefficient between X and Y.
In which category is ANOVA properly classified?
A consumer organization estimates that over a 1-year period 17 percent of cars will require to be repaired once, 7 percent will need repairs twice, and 4 percent will require three or more repairs. What is the probability that a car chosen at rand..
The distribution of lifetimes for a certain type of light bulb is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours. Find the 33rd percentile of the distribution of lifetimes.
The following table presents data on political party affiliation and class level for sample of students in certain university: If the student is selected at random from sample, determine the probability that student is Republican.
Build regression models for predicting house prices. We will be using data collected on 91 houses in Gainesville, Florida. The dataset contains the selling price of each house and information on four other explanatory variables.
A normal distribution was used as the prior for the mean, and it was found that posterior mean was 15 and the posterior standard deviation was 0.1 what were the mean and standard deviation of the prior.
The time spent by a factory worker A packing a box is a random variable with mean 3.5 minutes and standard deviation 1 minute. The times spent packing any two boxes are independent.
What is the probability of getting seven heads in a sample of twenty coin flips? Is this significantly different from the population in which P = 0.50 if the alpha is 0.05?
Assume there're three states of the economy: boom, moderate growth, and recession. The annual return on company A stock and company B stock in each state of the economy is given below
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