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Q1) Recognize the situation in which median rather than the mean is favoured measure of? Central tendency?
Q2) One question on student survey asks: In typical week, how many times do you eat at fast food restaurant? Following frequency distribution table summarizes results for a sample of n=20 students.
Number of times per week
f
5 or more
2
4
3
6
1
0
a) Determine the mode for this distribution.
b) Determine median for the distribution.
c) Describe why you can't calculate the mean number of times using data in the table.
A researcher hypothesizes that parents with school-aged children are more probable to vote in favour of a referendum increasing public school spending than adults without school-aged children, but wonders of this relationship holds for both Democr..
Make a point estimate and a 95% confidence interval estimate.
Utilizing the chart parameters developed above to define the control charts for future candy bar production, Compute the appropriate plotting points from the data.
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
What statement can you made by using the rule of three, about the proportion p, of all its computers which are defective?
Fit a multiple linear regression model for predicting the hospital duration using age, sex, body temperature, white blood cell counts, antibiotic use, blood culture and service
Do any of the selected samples seem to be out of the control limits? Describe.
Expand and aggregate plan using each of the following guidelines and complete the total cost for each plan. Which plan has the lowest total cost.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval for the difference in the proportion of defectives.
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
Can college conclude that students in new program are significantly different from rest of freshmen class? Use two - tailed test with a = 0.05.
Determine the mean number of times the machine was used per day.
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