Question
In: Statistics and Probability
Based on data that was collected over the past several months, the average time between arrivals...
- Based on data that was collected over the past several months,
the average time between arrivals to the Emergency Room on a Monday
between the hours of 7am to 7pm is 35min. Emergencies occur at
random, and hence the arrival of patients to the Emergency Room
follows a purely random process.
- What probability distribution would you use to model the time between patient arrivals?
- Suppose a patient just arrived, what is the probability the next patient will arrive in less than 20 minutes?
- If the expected time between arrivals is 35min, what is the hourly expected rate of arrivals?
- What is the probability there will be three or less arrivals in the next hour?
Solutions
Expert Solution
Let X denote the average time between arrivals of patients
orchestra answered 1 year agoRelated Solutions
Chi-Square test Question 1 (10 marks) Data have been collected over a period of several months...
Chi-Square test
Question 1 Data have
been collected over a period of several months on the means of
transportation used by most persons commuting to work into the city
office of a large business firm. The results have been listed
below:
Means of Transportation
Bus
Train
Car
Other
Number of all commuters
25
15
50
10
Conduct a hypothesis test to determine if there is a significant
difference among method of getting to work for this sample. Use a =...
The average time between arrivals of customers at a fast food restaurant drive through is 4...
The average time between arrivals of customers at a fast food
restaurant drive through is 4 minutes. Assuming an exponential
distribution, what is the probability that the next customer
arrives in less than 3 minutes?
Group of answer choices 39.35% 52.76% 47.24% 60.65% 75.00%
If u can please show excel input
The time series showing the sales of a particular product over the past 12 months is...
The time series showing the sales of a particular product over
the past 12 months is contained in the Excel Online file below.
Construct a spreadsheet to answer the following
questions.
Use a=0.2 to compute the exponential smoothing forecasts for the
time series (to 2 decimals).
Month
Time-Series
Value
Forecast
1
105
2
130
3
125
4
100
5
90
6
120
7
150
8
135
9
95
10
75
11
100
12
105
13
Use a smoothing constant of...
The following time series shows the sales of a particular product over the past 12 months....
The following time series shows the sales of a particular
product over the past 12 months.
Month
Sales
1
105
2
135
3
120
4
105
5
90
6
120
7
145
8
140
9
100
10
80
11
100
12
110
(a)
Construct a time series plot.
(b)
Use α = 0.3 to compute the exponential smoothing
forecasts for the time series. (Round your answers to two decimal
places.)
Month t
Time Series Value
Yt
Forecast
Ft
1
105...
The following time series shows the sales of a particular product over the past 12 months....
The following time series shows the sales of a particular
product over the past 12 months.
Month
Sales
1
105
2
135
3
120
4
105
5
90
6
120
7
145
8
140
9
100
10
80
11
100
12
110
(a)
Construct a time series plot.
A time series plot contains a series of 12 points connected by
line segments. The horizontal axis ranges from 0 to 13 and is
labeled: Month. The vertical axis ranges from 0...
The following time series shows the sales of a particular product over the past 12 months....
The following time series shows the sales of a
particular product over the past 12 months. can be found in the
below excel file.
https://drive.google.com/file/d/1gIpr0IBYUGgCIRSO7g3mqZ84F89vJU_P/view?usp=sharing
1. Using the three-month moving average, what is the Mean
Squared Error (MSE)?
(Round your answer to 2 decimal places. Negative values
should be indicated by a minus sign.)
2. Using the three-month moving average, what is the
forecast for month 13 ?
(Round your answer to 2 decimal places. Negative values
should be indicated by...
The following time series shows the sales of a particular product over the past 12 months....
The following time series shows the sales of a particular
product over the past 12 months.
Month
Sales
1
105
2
135
3
120
4
105
5
90
6
120
7
145
8
140
9
100
10
80
11
100
12
110
Use α = 0.5 to compute the exponential smoothing
forecasts for the time series. (Round your answers to two decimal
places.)
Month t
Time Series Value
Yt
Forecast
Ft
1
105
2
135
3
120
4
105
5...
The following time series shows the sales of a particular product over the past 12 months....
The following time series shows the sales of a particular
product over the past 12 months.
Month
Sales
1
105
2
135
3
120
4
105
5
90
6
120
7
145
8
140
9
100
10
80
11
100
12
110
(b)
Use α = 0.4 to compute the exponential smoothing
forecasts for the time series. (Round your answers to two decimal
places.)
Month t
Time Series Value
Yt
Forecast
Ft
1
105
2
135
3
120
4
105...
The following time series shows the sales of a particular product over the past 12 months....
The following time series shows the sales of a
particular product over the past 12 months. can be found in the
below excel file.
https://drive.google.com/file/d/1gIpr0IBYUGgCIRSO7g3mqZ84F89vJU_P/view?usp=sharing
1. Using the three-month moving average, what is the Mean
Squared Error (MSE)?
(Round your answer to 2 decimal places. Negative values
should be indicated by a minus sign.)
2. Using the three-month moving average, what is the
forecast for month 13 ?
(Round your answer to 2 decimal places. Negative values
should be indicated by...
1. Over the past several months, an adult patient has been treated for tetany (severe muscle...
1. Over the past several months, an adult patient has been
treated for tetany (severe muscle spasms). This condition is
associated with an average total calcium level below 6 mg/dl.
Recently, the patient's total calcium tests gave the following
readings (in mg/dl). Assume that the population of x values has an
approximately normal distribution.
10.1 8.8 10.5 8.7 9.4 9.8 10.0 9.9 11.2 12.1
(a) Use a calculator with mean and sample standard deviation
keys to find the sample mean...
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