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Consider the following pairs of measurements:
a. Construct a scattergram for these data
b. Find the least squares line, and plot it on your scattergram.
c. Find s2
d. Find a 90% confidence interval for the mean value of y when x = 3. Plot the upper and lower bounds of the confidence interval on your scattergram.
e. Find a 90% prediction interval for a new value of y when x = 3. Plot the upper and lower bounds of the prediction interval on your scattergram.
f. Compare the widths of the intervals your constructed in parts d and e. Which is wider and why?
determine the t critical value for a two-sided confidence interval in each of the following situations. round your
The following examples are experiments and their associated random variables. In each case identify the values the random variable can assume and state whether the random variable is discrete or continuous:
Your specific assignment for this week is to select one type of quantitative health datum to collect from your own life. Some examples of data to collect could be: How many minutes do you spend exercising each day
Find a 99% confidence interval for the proportion of adults who believe children spend too much time on electronic devices.Round your answers to three decimal places.
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
a market research survey is available for no cost. using a decision tree analysis it is found that the expected value
For a sample of 36 students in a class the mean score in Mathematics is 72 with a standard deviation of 7. Find the 95% confidence interval for the mean score.
Random variables x and y have the joint density function. Find the value of the constant a
over the years grades in an introductory statistics course were recorded and showed the following proportionsa 0.20 b
Populate the selected graph/frequency chart with fictitious data. Did your selected graph/frequency chart effectively portray the data?
What would you expect to be the relative frequency or empirical probability if you increased the number of times the die is rolled?
you are picking a bouquet of 20 flowers for your mother at random from a garden with 25 coneflowers 35 daisies and 42
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