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Houses with and without air conditioners on nine different streets in a certain city are shown below. Test (at the 5% level) the null hypothesis that having an air conditioner is independent of street locations of the houses.
Street
With A/C
Without A/C
1
5
18
2
8
35
3
25
4
38
17
24
6
11
31
7
19
20
9
What is the number of replications for each of the main treatment factors and their interaction and what do you conclude from the overall ANOVA analysis
Draw a tree diagram depicting the sample space outcomes for this experiment.
If we repeated this procedure many, many times, only 5 percent of the 95 percent confidence intervals would fail to include the mean Math SAT score of the population of all students at this college.
of the 89 people who answered yes to a question 8 were male. of the 43 people who answered no to the question 5 were
Mention all samples of size 3, and compute the mean of each sample. Compute the mean of the distribution of sample means and the population mean.
Establish a 99% Confidence interval about the difference in the proportion of the town voters and county voters who favor the proposal.
For a sample of 20 stations last Tuesday the correlation was .78. At the .01 significance level is the correlation in the population greater than 0? t= .78-20.00/.01SQRT 20=?
What is the relationship between the variance and the standard deviation?
Hugger Polls contends that an agent conducts a mean of 53 in-depth home surveys every week. A streamlined survey form has been introduced, and Hugger wants to evaluate its effectiveness.
in order to estimate the average electric usage per month a sample of 196 houses was selected and their electric usage
510 people were asked which of four fast food restaurant were their favorite. Determine if there is a preference for any one place over any other.
you want to estimate the standard deviation of the population of current annual incomes of adults in the united states.
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