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Data on the total number of (human) deaths reported during an outbreak of the Ebola virus in a region of west Africa:
Day 1: 4
Day 2: 11
Day 4: 17
Day 7: 26
Day 10: 42
Day 12: 58
Day 15: 84
Day 18: 99
Day 20: 108
Day 23: 112
Day 25: 118
Day 28: 120
Day 30: 120
1. Determine the correlation coefficient (nearest hundredth) and make a formal statement (sse Notes) as to the evidence for a linear relationship. Set the data so that time is the independent variable and number of deaths the dependent
2. Determine the linear equation that best models this data. Round the slope and intercept to five decimal places.
Would the mean of 7.1 hours of sleep obtained from the statistics students be a reasonable value to expect for the sample mean of a random sample of 190 adults? Explain.
If a student guesses on each? question, what is the mean and standard deviation of the number of correct? answers? Round to the nearest thousandth.
an engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between
Find the probability mass function for the random variable.- What is the probability that the experiment proceeds for at least 4 rolls?
What is the probability that a sample from this process will contain exactly 3 non- conforming items?
What must the projection speed be for P to escape to infinity? [Ignore electrodynamic effects. Use the method of images to solve the electrostatic problem.]
assume that x is a binomial random variable with n 30 and p 0.72. calculate the following probabilities. round your
1) What is the probability that a randomly selected water bottle will have exactly 16.8oz of water in it?
Fit a linear equation to the scatter diagram. Is the slope positive or is it negative? Is the sign of the slope consis- tent with your intuitive observation in part (a)?
We have so far seen many applications of linear programming in our course discussions.(This is the book we work from " Spreadsheet Modeling & Decision Analysis
a. Graph the probability distribution function. b. Calculate and graph the cumulative probability distribution.
The scatter diagram for data set below is shown. a) given that x= 3.667, sx = 2.5819889, sy= 1.5937377 and r= -0.8894261, find out least -regression line.
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