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Suppose you have 2 friends, one is tall, about 6 feet tall and has a GPA of 3.80. Also your other friend who is also tall has a GPA of 4.0. This make you wonder if a person's height has any association with their GPA. You decide to conduct a study and collect data on the topic. Which of the following is the best graphical representation for this problem.
a. Scatterplot. I will label height as my explanatory variable and GPA as the response.
b. Line graph. I will record the time it takes for them to record GPA.
c. Scatterplot. I will record height as my response and GPA as my explanatory variable.
d. Pie chart. These variables are categorical.
a. Which measure of center determines this salary, and what is its value?
Time closely follows a normal distribution with a mean of 500 seconds and a standard deviation of 72 seconds. What percent of kiosk users take between 600 and 720 seconds?
a. Plot the series along with the superimposed linear and quadratic trends. Which trend model do you think describes the data well?
Using "ages" as the independent variable and "Number of driver deaths per 100,000" as the dependent variable, make a scatter plot of the data.
Obtain the estimated regression function. Plot the estimated regression function and the data. Does a linear regression function appear to give a good fit here?
Fortune published a list of the 10 largest "green companies"-those that follow environmental policies. - Find the mean, variance, and standard deviation of the annual revenues.
An experiment consists of flipping the fair coin three times and noting the number of heads and tails. A random variable x is defined to be two times the number of heads plus the number of tails.
What is the standard deviation for the number of accidents involving males between the ages of 19 and 34?
The employee would like the margin of error to be less than 0.5 with probability of 0.95. Past records show the weekly standard deviation to be 2.5.
A researcher wishes to estimate the mean weight of all women in this age group. Fine how large a sample must be drawn in order to be 90% confident that the sample will not differ from the population mean by more than 2.0 pounds.
What is the probability that a randomly chosen member of the population in the area will be exposed to at least one method of advertising during a given week?
if you upload an image please make sure it is clear and your writing is legible.a telemarketer makes 80 calls in a one
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