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a) Many people already know how to find the mean (average) of a sample of data by "adding all the numbers and dividing by the number of values in the dataset." Read Chapter 4, and then describe, in your own words, another method of finding the mean by using the sample space (list of possible values) and probabilities (the technique is in the book).
Create a list of seven, 2-digit numbers (with no duplicates) and another set of seven probabilities (with no duplicates). The probabilities must add to 1.
Open R, and manually enter those numbers and their corresponding probabilities to calculate the mean using only addition and multiplication (in other words, enter only the numbers, the plus sign, and the * for multiplication, like on the bottom of Yakir, 2011, p. 57). Paste all the R output into your learning journal.
b) Describe in your own words what your calculation is doing and what the answer means.
In Figure 6.3, Step 2 pushes a state on the parse stack. In the bottom-up parse shown in Figure 6.6, stack cells show both the state and the input symbol causing the state's shift onto the stack. Explain why the input symbol's presence in ..
a researcher wishes to estimate with 90 confidence the proportion of adults who have high-speed internet access. her
the mean height of women in a country ages 20-29 is 63.8 inches. a random sample of 75 women in this age group is
A population is normally distributed with mean 42.7 and standard deviation 4.7. Find the following probability.
With a selling price of 40 dollars each, how many pool cues must be sold to break even? What would the total revenue be at this break even point?
a national magazine claims that the average college student watches less tv than the general public. the national
In each of the following situations, state an appropriate null hypothesis H0 and alternative hypothesis Ha. Be sure to identify the parameters that you use to state the hypotheses. (We have not yet learned how to test these hypotheses.)
A nutritionist heard on the radio an amazing new diet drink that if taken at bedtime you will lose weight as you're sleeping. To top it off you can eat anything you want because the diet fuel will burn it off.
The level of satisfaction in a consumer survey would represent what level of measurement?
d. Compare the value of SSE for the least squares line to that of the two lines you found in part b. What principle of least squares is demonstrated by this comparison?
the jessie cohen clothing group owns factories in three towns w y and z which distribute to three cohen retail dress
The chart at the right. Does this sample indicate that songs classified as dance music have lower beats per minute than the songs ranked on a Top 200 list?
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