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Probability based on a random experiment.
1. The telephone numbers for a region of a state have an area code of 570. The next seven digits represent the local telephone nukbers for that region. A local telephone number cannot begin with a 0 or 1. Your cousin lives within the given area code. What is the probability of not randomly generating your cousin's telephone number?
2. Decide if the events are mutually exclusive.
Event A: Randomly select a person who loves cats.
Event B: Randomly select a person who owns a dog.
Use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean. What are these limits?
Find the test statistic P-value, and critical value, and state the final conclusion.
Explain clearly, in your own words, what is a Type I error in this context.
Sales manager wishes to award sales representatives who earn the largest commissions a bonus of= $1,000 .He can award bonus to 20% of representatives. Determine cutoff point between those who earn bonus and those who don't?
Determine probability that number of boats constructed next month will be between 4 and 7 (both inclusive).
At α = 0.01 level of significance, test the hypothesis that these data can be described by a Poisson pdf.
If person is selected at random and tested, determine the probability of that person having an IQ score between 85 and 115. Make use of EXCEL to help determine the probability.
Find the probability that a randomly selected employee earns less than $5.43.
Chi-square test for independence of attributes - Describe why a x 2 test of the resulting contingency table is appropriate for such an investigation.
What would you predict the price per share to be if 95 million shares were offered?
Find out the confidence interval for the population mean also interpret the result. A researcher is interested in whether social assertiveness might be influenced by training procedures.
The population of IQ scores forms a normal distribution with mean of μ = 100 and a standard deviation of σ = 15. What is the probability of obtaining a sample mean greater than M = 105,
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