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Test the claim that the average SAT score for graduating high school students is equal to 1100. A random sample of 70 students was selected, and the average SAT score was 1035. Assume σ " 310 and use α= 0.10. What is the p-value for this sample?
Construct a 95% confidence interval estimate for the average waiting time of all the patients who visit this doctor. Assume the population of waiting times is normally distributed.
Assume a normal distribution applies and alpha = 0.05 (Use Z table), find the Critical value for the alternative hypothesis:
Have your program repeat this experiment a number of times to estimate the expected number of selections necessary in order that the sum of the chosen numbers first exceeds 1. On the basis of your experiments, what is your estimate for this number..
1. rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.2.
in a poll respondents were asked whether they had ever been in a car accident. 177 respondents indicated that they had
1. a sample survey of 54 discount brokers showed that the mean price charged for a trade of 100 shares at 50 per share
This weekend the team has two games against teams they are not very familiar with. Assuming that the ?rst team they play is a class 1 team with probability 0.6 and the second is, independently of the class of the ?rst team, a class 1 team with ..
let x and y be independent exponential random variables with means 2 and 3 respectively. let zxy. determine
After treatment is administered to individuals in sample, sample mean is found to be M = 55. Determine Cohen's d measure effect size for both tests (σ = 20 and σ = 10).
An epidemiologic investigation was conducted at the high school. Table E4.6 gives the rates of positive tuberculin reaction, determined for various groups of students according to degree of expo-sure to the index case. Calculate the 95% con?dence ..
The company can either settle out of court for $250,000 or go to court. If the company goes to court and loses, it must pay $825,000 plus $175,000 in court costs. If it wins in court the plaintiffs pay the court costs. Identify the states of natur..
(probability that person has college degree is p = 0.30). If N adults are randomly selected, find probabilities that
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