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Molly s college offers two sections of Statistics 101. From what she has heard about the two professors listed, Molly estimates that her chances of passing the course are 0.80 if she gets Professor Scedastic and 0.60 if she gets Professor Kurtosis. The registrar uses a lottery to randomly assign the 120 enrolled students based on the number of available seats in each class. There are 70 seats in Professor Scedastic s class and 50 in Professor Kurtosis s class.
a) What's the probability that Molly will pass Statistics?
b) At the end of the semester, we find out that Molly failed. What's the probability that she got Professor Kurtosis?
Compute the expected frequencies for x 0, 1, 2, 3, and 4 by using the binomial probability function. Combine categories if necessary to satisfy the requirement that the expected frequency is five or more for all categories
1. automobiles arrive at the drive-thru window at the downtown fort mcmurray post office at the rate of 4 every 10
in a survey of 1954 cellphone owners adults aged 18 and over 743 reported that they use their phone to keep themselves
what is the appropriate procedure to test for significant difference in means between two groups? Implement the procedure using the critical-value method and what is the p-value?
Which of the following does not explain a possible relationship between variables when the null hypothesis is rejected
show that if x and y are independent poisson random variables with parameters lambda1 gt 0 and lambda2 gt 0 thenpx y
What is the probability that a poll of a simple random sample of 100 NC voters will result in at least half of those polled favoring the other candidate? Use the normal approximation (no continuity correction) and give your answer to four decimal ..
a researcher is evaluating the influence of a treatment using a sample selected from a normally distributed population
please answer the question in full providing any relevant equations or diagrams used to come to a final answer.a in a
Create a bar graph using two different colors to represent the male and female categories. Use age to categorize and graph the average height.
In a random sample of 225 students at a university, 180 stated that they were nonsmokers. Based on this sample, compute a 95% confidence interval for the proportion of all students at the university who are nonsmokers.
Calculate and post your 'answers' or interpretations of (a little bit of a review of the fundamental concepts): The three Measures of Center (Mean, Median, and Mode).
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