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Pareto charts. A large hospital was concerned about whether it was scheduling its operating rooms efficiently. Operating rooms lying idle may mean loss of potential revenue. Of particular interest was when and for how long the first operation of the day was performed. As a first step in understanding the use of its operating rooms, data were collected on what medical specialties were the first to use one of the rooms for an operation in the morning.5 Here is what the hospital found:
What percent of total operations do these 8 specialties account for? Make a Pareto chart of percent of all operations by specialty. Which specialties should the hospital study first when attempting to understand operating-room use?
Q7;
Special causes. Tayler participates in 10-kilometer races. She regularly runs 15 kilometers over the same course in training. Her time varies a bit from day to day but is generally stable. Give several examples of special causes that might raise Tayler's time on a particular day.
a production facility employs 20 workers on the day shift 15 workers on the swing shift and 10 workers on the graveyard
Which of the following descriptions of confidence intervals is correct? (Select all that apply). When conducting a hypothesis test, which one of the following p-values would you feel most confident to reject the null hypothesis
Find and interpret the probability that exactly 15 of those surveyed feel the state of morals is poor. The probability that exactly 15 of those surveyed feel the state of morals is poor is What?
Further, 20 students get both questions 1 and 2 incorrect, 15 get both questions 2 and 3 incorrect, and 8 get both questions 1 and 3 incorrect, and 7 get all three questions incorrect. Find the probability that a randomly selected student: a) Gets..
question 1 in a sample of 150 auto occupants 86 wore seatbelts. in a sample of 200 truck occupants 74 wore seatbelts.
1. a researcher examines the records of all registered voters in one city and finds that 43 are registered democrats.
n instant lottery ticket costs 2. out of a total of 10000 tickets printed for this lottery 1000 tickets contain a prize
A product used in a laboratory of the hospital costs $60 to order, and its carrying cost per item per week is one cent. Demand for the item is six hundred units weekly. The lead time is three weeks and the purchase price is $0.60. What is the econ..
The heights of 10 sixth graders are listed in inches: {53, 61, 54, 60, 58, 62, 55, 58, 59, 56}. Find the mean, median, mode, sample variance, and range.
He received a score of 70 on a biology test for which the class mean was 70 with standard deviation of 4. On which test did he do better relative to the rest of the class?
a researcher records the level of attention among 18 students during an interactive and lecture portion of a single
Discuss how the Empirical Rule works and how it relates to the bell curve. Then, explain Chebyshev's Theorem and how it is different from the Empirical Rule.
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