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Suppose that you have the following data:
x 3 5 2 6 1 4 y 25 110 9 250 3 71
a) Draw the scatter diagram. Does it appear that x and y are related? If so, how?
b) Test to determine whether there is evidence of a linear relationship.
Statistics and Probability, Statistics
The service manager for a car dealership reviewed sales records of the past 25 sales of new cars to determine the number of warranty repairs he will be called on to perform in the next 90 days. Corporate reports indicate ...
Assume the random variable x is normally distributed with mean mu = 86 and standard deviation sigma =4. Find the indicated probability. P(x
Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years old who sleep with the lights on have a 35% chance of becoming myopic before they are 16. Children who sleep in ...
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A spinner is divided into five equal sectors labeled 1 through 5. What is the probability of getting at most two prime numbers in three spins?
Confidence 1.The daily sales of Burger Baby restaurants follow the normal distribution with a standard deviation of $4000. a. A sample is taken of 50 restaurants and the average sales were $40,000/day. What is the 99% co ...
Suppose a soccer team wins each of its games with probability 0.4, loses with probability 0.4, and ties with probability 0.2, with each game's outcome independent. Their season starts, and they play a game every day.Let ...
Describe the steps you took. There are 652 males, 396 say they have been to dentist in past year. Give a confidence interval for 90% of the population proportion .
A 2-year Treasury security currently earns 1.97 percent. Over the next two years, the real risk-free rate is expected to be 1.00 percent per year and the inflation premium is expected to be 0.60 percent per year. Calcula ...
You apply both valuation criteria and financial strength criteria in choosing stocks. The probability that a randomly selected stock from your investment universe meets your valuation criteria is 0.25. Given that a stock ...
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