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Make a Pareto diagram and give conclusions.
The following data represent complaints about hotel rooms:
Reason
Number
Room dirty
32
Room not stocked
17
Room not ready
12
Room too noisy
10
Room needs maintenance
Room has too few beds
9
Room doesn't have promised features
7
No special accommodations
2
a. Construct a pareto diagram.
b. What reasons for complaints do you think the hotel should focus on if it wants to reduce the number of complaints? Describe.
It is better to use the median rather than the mean for a distribution when:
The variable recorded for each subject was the number of additional yards (possibly negative) that the subject could drive the ball by the end of the season. In the two-way ANOVA the DFM
A game involving a pair of dice pays you 3 with probability 17/36, costs you 2 with probability 14/36, and costs you 4 with probability 5/36. What is your probability of losing money in one play of the game?
For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
Determining probability values using the Binomial distribution.Use the Binomial distribution to determine the probability that four or more of the contracts are in breach of the tendering guidelines.
What is the value of the population mean? What is the best estimate of this value?
A researcher was interested in determining whether incentives affect the response rate in surveys. A simple random sample of 50 adult residents of a large city was selected. All were mailed a survey and promised a check upon returning a completed ..
Form a frequency distribution and a percentage distribution that have class intervals with the upper class limits $99, $119, and so on.
The ANOVA procedure is a statistical approach for determining whether or not:
At 0.01 level of significance, is there evidence that mean price is higher at Whole Foods Market than at Fairyway supermarket? Interpret the meaning of p-value in (i).
To find z-score and required probabilities based on Normal distribution. Assume that childrens weekly allowances are normally distributed in the population.
A school tracks the absences of pupils as part of a flu surveillance system. Regular reporting of absences among 25 students in grade 1 are taken, and based on these data, the long-run proportion of absences under normal conditions is estimated to..
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