"In a X-bar chart monitoring the average response time to a 911 call, a sample mean...
"In a X-bar chart monitoring the average response time to a 911 call, a sample mean falls below the LCL. Is that good or bad news?"
| A) |
"Bad news, both statistically and practically speaking" |
|
| B) |
"Bad news, statistically speaking, but good news, practically speaking" |
|
| C) |
"Good news, both statistically and practically speaking" |
Homework Answers
B) "Bad news, statistically speaking, but good news, practically speaking"
- The given scenario is bad news statistically, but practically speaking, it is good news.
Sincerely request you to please give me an upvote. Thanks in advance.
Add Answer to:
"In a X-bar chart monitoring the average response time to a 911
call, a sample mean...
A call center company requires it's operators to answer the phone in an average time of 0.17 minutes or less. A sample o...
A call center company requires it's operators to answer the phone in an average time of 0.17 minutes or less. A sample of 32 actual operator times were collected and the results were a mean time of 0.173 minutes and a standard deviation of 0.0183 min. Is this sample mean response time statistically higher than the standard? What can you conclude? Assume alpha = 0.05 Select one: a. There is statistical evidence that the mean response time exceeds the standard....
I will rate 1. For constructing a X-bar chart, subgroup sample average (x bar) and range(r)...
I
will rate
1. For constructing a X-bar chart, subgroup sample average (x bar) and range(r) are computed for each of 24 preliminary samples using a sample size n=5. 24 24 We have the following data summary: Ex-816 and r - 113 Il El (a) Find the following for X-bar chart:(6 pts) Upper control limit, Center line, and Lower controllimit (b) Find the following for R chart: (6 pts) Upper controllimit, Center line, and Lower controllimit: (c) Calculate the fraction...
1. For constructing a X-bar chart, subgroup sample average (x bar) and range (r) are computed...
1. For constructing a X-bar chart, subgroup sample average (x bar) and range (r) are computed for each of 24 preliminary samples using a sample size n=5. We have the following data summary: 24 24 Ex;=816 and Er;= 113 i = 1 i = 1 (a) Find the following for X-bar chart: 06 pts) Upper control limit, Center line, and Lower control limit (b) Find the following for R chart: (6 pts) Upper control limit, Center line, and Lower control...
Regarding the X bar char which one of the following is wrong A This chart shows...
Regarding the X bar char which one of the following is wrong A This chart shows sample mean over time B This chart monitors process average C This chart uses the amount of dispersion in a sample D This cahrt is a type of variable control chart E None of the above is wrong all the statemnts above are true
I will rate 2. A process has a X-bar control chart with UCL-17.4. LCL-12.79 using a...
I
will rate
2. A process has a X-bar control chart with UCL-17.4. LCL-12.79 using a 3-sigma limit. The subgroup sample size is 3. (a) Estimate the standard deviation of the process, sigma hat. (6 pts) (b) Suppose that the process mean shifts to 13. Find the probability that this shift will be detected on the next sample. (8 pts) (c) Calculate the average run length (ARL) before detecting the shift. (6 pts)
2. A process has a X-bar control chart with UCL=17.4, LCL=12.79 using a 3- sigma limit....
2. A process has a X-bar control chart with UCL=17.4, LCL=12.79 using a 3- sigma limit. The subgroup sample size is 3. (a) Estimate the standard deviation of the process, sigma hat. (6 pts) (b) Suppose that the process mean shifts to 13. Find the probability that this shift will be detected on the next sample. (8 pts) (c) Calculate the average run length (ARL) before detecting the shift. (6 pts)
Police response time to an emergency call is the difference between the time the call is...
Police response time to an emergency call is the difference between the time the call is first received by the dispatcher and the time a patrol radios that it has arrived at the scene. Over a long period of time, it has been determined that the police response time has a normal distribut with a mean of 10.4 minutes and a standard deviation of 1.7 minutes. For a randomly received emergency call, find the following probabilities (For each answer, enter...
A manager wants to build control limits that include 95.45% of the sample means. The average mean of the process is 10 units, and the standard deviation of the process is known and it is equal to 6. I...
A manager wants to build control limits that include 95.45% of the sample means. The average mean of the process is 10 units, and the standard deviation of the process is known and it is equal to 6. If 4 samples of 9 units are to be taken, what is the UCL and LCL of X- bar chart
A control chart is used for monitoring a process meanl (X) that is normally distributed with a mean of μ and a standard...
A control chart is used for monitoring a process meanl (X) that is normally distributed with a mean of μ and a standard deviation of σχ , and the sample size is n-5. А 3-sigma limit (μ ±30% ) is used as control limits. Two decision rules are given here. Rule 1: If one or more of the next seven samples yield values of the sample average that fall outside the control limits, conclude that the process is out of...
I. You are developing an "X-bar" chart based on sample means. You know the standard deviation...
I. You are developing an "X-bar" chart based on sample means. You know the standard deviation of the sample means is 4, the desired confidence level is 99 percent, and the average of the sample means is 20. Which of the following is your LCL? (Note that Z-value will be 2.576) A. 36 B. 24 C. 9.68 D. 16.79 E. 30.32 II. You want to develop a three-sigma "R" chart. You know the average range is 12 based on several...
I
will rate
1. For constructing a X-bar chart, subgroup sample average (x bar) and range(r) are computed for each of 24 preliminary samples using a sample size n=5. 24 24 We have the following data summary: Ex-816 and r - 113 Il El (a) Find the following for X-bar chart:(6 pts) Upper control limit, Center line, and Lower controllimit (b) Find the following for R chart: (6 pts) Upper controllimit, Center line, and Lower controllimit: (c) Calculate the fraction...
1. For constructing a X-bar chart, subgroup sample average (x bar) and range (r) are computed for each of 24 preliminary samples using a sample size n=5. We have the following data summary: 24 24 Ex;=816 and Er;= 113 i = 1 i = 1 (a) Find the following for X-bar chart: 06 pts) Upper control limit, Center line, and Lower control limit (b) Find the following for R chart: (6 pts) Upper control limit, Center line, and Lower control...
I
will rate
2. A process has a X-bar control chart with UCL-17.4. LCL-12.79 using a 3-sigma limit. The subgroup sample size is 3. (a) Estimate the standard deviation of the process, sigma hat. (6 pts) (b) Suppose that the process mean shifts to 13. Find the probability that this shift will be detected on the next sample. (8 pts) (c) Calculate the average run length (ARL) before detecting the shift. (6 pts)
2. A process has a X-bar control chart with UCL=17.4, LCL=12.79 using a 3- sigma limit. The subgroup sample size is 3. (a) Estimate the standard deviation of the process, sigma hat. (6 pts) (b) Suppose that the process mean shifts to 13. Find the probability that this shift will be detected on the next sample. (8 pts) (c) Calculate the average run length (ARL) before detecting the shift. (6 pts)
Police response time to an emergency call is the difference between the time the call is first received by the dispatcher and the time a patrol radios that it has arrived at the scene. Over a long period of time, it has been determined that the police response time has a normal distribut with a mean of 10.4 minutes and a standard deviation of 1.7 minutes. For a randomly received emergency call, find the following probabilities (For each answer, enter...
A control chart is used for monitoring a process meanl (X) that is normally distributed with a mean of μ and a standard deviation of σχ , and the sample size is n-5. А 3-sigma limit (μ ±30% ) is used as control limits. Two decision rules are given here. Rule 1: If one or more of the next seven samples yield values of the sample average that fall outside the control limits, conclude that the process is out of...
Most questions answered within 3 hours.
-
1- What are 5 general characteristics of Botticelli’s
paintings?
2- Describe 5 important traits of Flemish...
asked 1 hour ago -
A golfer claims that his average golf score at the course he
plays regularly is less...
asked 1 hour ago -
On May 1, First Bank perfected a security interest in Debtor’s
inventory. On June 1, Bob...
asked 1 hour ago -
A new kind of typhoid shot is being developed by a medical
research team. The old...
asked 3 hours ago -
Write a chemical equation for these reactions. (Use
the lowest possible whole number coefficients.) Include
states-of-matter...
asked 5 hours ago -
For each of the Z-scores below, determine two probabilities
(show four three decimal places): (1) the...
asked 6 hours ago -
Oxidative phosphorylation is achieved through chemiosmotic
coupling, which turns chemical energy into osmotic potential energy
that...
asked 8 hours ago -
Hollywood Shoes would like to maintain their cash account at a
minimum level of $64,000, but...
asked 8 hours ago -
Proteins CtrA-P, DnaA, and GcrA behave similarly to what
molecule in the Eukaryotic Cell Cycle?
asked 8 hours ago -
TRUE OR FALSE
In case of a competitive tender procedure, in the request for
quotation, the...
asked 8 hours ago -
I am a little behind please provide some explanation, will
provide thumbs up.
This question considers...
asked 8 hours ago -
Let say the utility function as U(X,Y) = lnX + Y. Show that the
marginal rate...
asked 9 hours ago