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Nine households had the following number of children per household:
2
0
1
4
3
Find the mean, median, mode, and midrange for these data.
what is the sample space of all possible outcomes? Are the outcomes equally likely?
The chi-square goodness of fit is______________a one-tailed test with the rejection region in the right tail.
4 7 7 5 2 9 7 6 8 5 8 4 1 5 2 8 7 6 6 9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.
Scores on a test have a mean of 73 and Q3 is 81. The scores have a distribution that is approximately normal. Find P90.
The probability of the patient being chosen at random as having meningitis as only site of infection is?
Set up dummy coded dummy variables to contrast each of the other groups to Group 2, medium Anxiety; run a regression to predict exam performance (Y) from these dummy coded dummy variables.
Speed of cars travelling on I-85 in Gaston County is normally distributed with average speed (µ) of 66 MPH and standard deviation (σ) of 8 MPH.
If the basket ball player is a 74% free throw shooter, then, on average, how many free throws will he or she make in a game with eight free throw attempts?
What is the probability the average of the sample is more than $38000 and What is the standard deviation of the sample mean
Suppose it costs $25 per student for the administrators to provide the course materials.
Explain clearly, in your own words, what is a Type I error in this context.
At a large department store, the amount a shopper spent and the shopper's gender (male or female) were recorded. To determine if gender is useful in explaining the amount of money a shopper spends at the store we could
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