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1. Assume the same data as are given in Problem 9. Suppose that the alternative hypothesis reads HA: X 85. Test the null hypothesis at the .05 significance level and state your conclusions.
2. The eighth-grade national norm for a social science test is a score of 123. The research director of a school district wants to know how the scores of pupils in his district compare with this standard. He selects a random sample of 81 students and finds that X 117. Assume X 10. (a) State the null hypothesis and alternative hypothesis best suited to the nature of his inquiry. Test the null hypothesis (b) at the .05 level of significance and state your conclusions and (c) at the .01 level of significance and state your conclusions.
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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