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Four statistics students discuss the question, "Which of these variables could take a value that is so low as to be surprising: age of a mother at the time of delivery, or age of a mouse at time of death, or both, or neither?" Whose answer is best?
Adam: Any data set can have low outliers, so I'd say both. Brittany: You shouldn't be surprised by low outliers, they happen all the time. So I'd say neither.
Carlos: We saw an example of a mouse that died at an unusually old age. There must also be mice that die at an unusually young age, so I'd say age of a mouse at time of death could have a surprisingly low value.
Dominique: Mice die at birth all the time, so the lowest possible value is zero but it wouldn't surprise us at all. On the other hand, mothers are usually at least in their teens when they deliver, but I read that there are a few girls who develop early and give birth when they're still children themselves.
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
Let {Yt} be a doubly infinite sequence of random variables that is stationary with autocovariance function γY . Let Xt = (a + bt)st + Yt, where a and b are real numbers and st is a deterministic seasonal function with period d
in an oregon lottery game called cash crossword a player purchases a card for two dollars. scratching the card reveals
In what way do researchers take a risk if they do not pilot test the independent variable they plan to use in an experiment?
Using symbols mention null hypothesis and alternative hypothesis.
Construct a scatter plot of the unemployment rate versus inflation rate for the period 2000 through 2005. Describe the relationship that appears to exist.
The mean of a normal distribution probability is 400 pounds. The standard deviation is 10. What is the area between 415 pounds and the mean of 400 pounds? (Round to 4 decimals)
Using the data below., develop a multiple regression model to predict score (rating) based on restaurant type (0 = Italian and 1 = Seafood/Steakhouse) and price of a meal in dollars
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Make a plot with degrees of freedom from 2 to 100 on the x axis and t* on the y axis. Draw a horizontal line on the plot corresponding to the value of z* = 1.96. Summarize the main features of the plot.
an advertisement for a popular weight loss clinic suggests that participants in its new diet program lose on average
for the sample of eight bears researchers measured the distances around the bears chests and weighed the bears. minitab
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