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We have 6 boys and 4 girls in our church choir. There is an upcoming concert in the local town hall. Unfortunately, we can only have 5 youths in this performance. This performance team of 5 has to be picked randomly from the crew of 6 boys and 4 girls. What is the probability that exactly 3 boys are picked in this team of 5?
Students were surveyed as to how many minutes they had exercised the day before. They were also asked whether or not they smoked.
IQ scores form a normal distribution with µ = 100 and σ = 15. Individuals with IQs above 140 are classified in the genius category. What proportion of the population consists of geniuses? Individuals between 90 and 110 are classified as average. W..
For a lottery to be successful, the public must have con dence in its fairness. One of the lotteries in Maryland is Pick-3 Lottery. Write down the test statistic to be used for testing the hypothesis.
assume that are searcher randomly selects 14 newborn babies and counts the numberof girls selected. the probabilities
a simple random sample of 120 sat scores has a mean of 1540. assume that sat scores have a population standard
consider the following simple model for daily changes in the price of a stock. suppose that on each day the price
Explain how significance is determined in simple terms as well and define a statistical interaction and how it affects your results. Give an example. List the variables that are interacting and why.
in a survey of 1116 people 866 people said that they voted in a recent presidential election voting records show that
Consider the SRS and RSS of size 20 each obtained in Problems 1 and 2, respectively, and list the audited (true) invoice value for each of these units. Compare and contrast the SRS and RSS as far as being representative of the entire population of..
let x have normal distribution with mean 11.3 and standard deviation 5.7.find the cumulative probability of 9.31 or
Using the population standard deviation of 1.9 daysfind the 90% confidence interval for the mean number of days a patient stays in the ward.
Calculate the test statistic. Use the information given. Suppose you are interested to see if less than 10% of video gaming youngsters display behavioral signs
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