A 5-min sample count yields 600 counts and 1-h background measurement yields 2400 counts. What are...
A 5-min sample count yields 600 counts and 1-h background measurement yields 2400 counts. What are the net counting rate and its standard deviation? 112 +/- 4.9 cpm 40 +/- 6.3 cpm 80 +/- 6.3 cpm 80 +/- 4.9 cpm
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A 5-min sample count yields 600 counts and 1-h background
measurement yields 2400 counts. What are...
6. A radiation detection system has a mean background counting rate of 2 counts per second....
6. A radiation detection system has a mean background counting rate of 2 counts per second. A 30 min counting for an unknown radioactive sample led to the gross counts of 4,000 counts (a) Compute the net count and its uncertainty. (b) Find the minimum counting time required to reach 5% uncertainty for the net counts.
From the following list, single out those measurements for which the square root of a typical...
From the following list, single out those measurements for which the square root of a typical measurement is a proper estimate of the standard deviation of the distribution from which the measurement is drawn: (a) A 1-min count from a detector (b) A 5-min count from a detector ( c) The net counts from a detector over a 1-min period after background subtraction. (d) The counting rate expressed as counts per second based on a 100-s measurement (e) The average...
Could you please solve it as soon as possible for Radiation Health Physics. 9.8. A sample...
Could you please solve it as soon as possible for Radiation
Health Physics.
9.8. A sample that had been counted for 15 minutes showed a mean counting rate of 32 cpm. The background, counted for 10 minutes, was 15 cpm. (a) What is the net counting rate, at the 95% confidence limit? (b) What is the coefficient of variation (relative error at ±1 standard deviation) of the
9.8. A sample that had been counted for 15 minutes showed a mean...
2. Based on this data from #1, how many counts would you expect to get on day 12? What is the unc...
Data From 1
2. Based on this data from #1, how many counts would you expect to get on day 12? What is the uncertainty (i.e. standard deviation) in that number based on the uncertainty in the slope and intercept? day time(min)count 2 0 1 1036 997 890 882 792 783 768 742 698 675 4 5 6 2 8 9 2
2. Based on this data from #1, how many counts would you expect to get on day 12?...
1. What sample size is needed to estimate the mean white blood cell count (in cells...
1. What sample size is needed to estimate the mean white blood cell count (in cells per (1 poin microliter) for the population of adults in the United States? Assume that you want 99% confidence that the sample mean is within 0.2 of population mean. The population standard deviation is 2.5. O 601 1036 O 1037 O 33 2. The sample space of a population being researched contains 58 values and a mean of 318.6. (point The population has a...
any help appreciated! especially checking with what i already have for sig figs! (2) Calculate the approximate random error ∆h = (1/2) [h(max) - h(min)], where h(max) and h(min) are the highest and...
any help appreciated! especially
checking with what i already have for sig figs!
(2)
Calculate the approximate random error ∆h
= (1/2) [h(max) - h(min)], where h(max) and h(min) are the highest
and lowest values of h. ∆h refers to the random error in each
measurement of h.
(3)
Calculate the average hav =
(1/8)[h1 + h2 +…+ h8] and the
error in the average ∆hav = ∆h/√8, of the eight trials.
∆hav gives an overall estimate for the random...
1. A population has a mean of 129. If a random sample of 8 items from...
1. A population has a mean of 129. If a random sample of 8 items from the population results in the following sampled values, what is the sampling error for the sample? 145, 129, 108, 153, 149, 154, 117, 120 2. For a population with a mean equal to 250 and a standard deviation equal to 25, calculate the standard error of the mean for the following sample sizes. a) 10 b) 40 c) 70 3. Managers at a local...
6. The following stem-and-leaf diagram gives the number of patents held by each of a sample...
6. The following stem-and-leaf diagram gives the number of
patents held by each of a sample of 36 public and private U.S.
universities.
A- I
6. The following stem-and-leaf diagram gives the number of patents held by each of a sample of 36 public and private U.S. universities. 0 223 4799 1 11145566689 2 023479 3 004355 419 a) What is the shape of the distribution? Explain. b) What percentage of universities in the sample hold at least 50 patents?...
only one problem (Exercise 1-11 only) Uncertainties in Measurement and Propagation of Errors one measurement is...
only one problem (Exercise 1-11 only)
Uncertainties in Measurement and Propagation of Errors one measurement is made and often the peecision of the instrument is used as arn mate of the uncertainty. the instrument and the situation, the uncertainty Depending upon could be less than the precision of the instrument or it could be more. For example, in measuring we may estimate the distance between the small est subdivision (mm) if we rurn the meter stick onto its side to...
D-H is what I’m needing help with Winter 19 Capstone Project (1)- AutoRecovered Compatibility Mode ayout...
D-H is what I’m needing help with
Winter 19 Capstone Project (1)- AutoRecovered Compatibility Mode ayout References Mailings Review View Help Soda PDF Creator Tell me what you want to do Find - be Replace Select . A"A" Aa- ·-·-·-·--釗町 LNormal] Heading 1 Heading 1 Heading2 Heading3Select Heading 3- ' A. ρ.스. E-3-B- Heading 2 Dictate Paragraph Editing t is temporanily stored on your computer. Save vated To keep using Wond without interruption activate before Sunday, January 13, 2012. Activate...
6. A radiation detection system has a mean background counting rate of 2 counts per second. A 30 min counting for an unknown radioactive sample led to the gross counts of 4,000 counts (a) Compute the net count and its uncertainty. (b) Find the minimum counting time required to reach 5% uncertainty for the net counts.
Could you please solve it as soon as possible for Radiation
Health Physics.
9.8. A sample that had been counted for 15 minutes showed a mean counting rate of 32 cpm. The background, counted for 10 minutes, was 15 cpm. (a) What is the net counting rate, at the 95% confidence limit? (b) What is the coefficient of variation (relative error at ±1 standard deviation) of the
9.8. A sample that had been counted for 15 minutes showed a mean...
Data From 1
2. Based on this data from #1, how many counts would you expect to get on day 12? What is the uncertainty (i.e. standard deviation) in that number based on the uncertainty in the slope and intercept? day time(min)count 2 0 1 1036 997 890 882 792 783 768 742 698 675 4 5 6 2 8 9 2
2. Based on this data from #1, how many counts would you expect to get on day 12?...
1. What sample size is needed to estimate the mean white blood cell count (in cells per (1 poin microliter) for the population of adults in the United States? Assume that you want 99% confidence that the sample mean is within 0.2 of population mean. The population standard deviation is 2.5. O 601 1036 O 1037 O 33 2. The sample space of a population being researched contains 58 values and a mean of 318.6. (point The population has a...
any help appreciated! especially
checking with what i already have for sig figs!
(2)
Calculate the approximate random error ∆h
= (1/2) [h(max) - h(min)], where h(max) and h(min) are the highest
and lowest values of h. ∆h refers to the random error in each
measurement of h.
(3)
Calculate the average hav =
(1/8)[h1 + h2 +…+ h8] and the
error in the average ∆hav = ∆h/√8, of the eight trials.
∆hav gives an overall estimate for the random...
6. The following stem-and-leaf diagram gives the number of
patents held by each of a sample of 36 public and private U.S.
universities.
A- I
6. The following stem-and-leaf diagram gives the number of patents held by each of a sample of 36 public and private U.S. universities. 0 223 4799 1 11145566689 2 023479 3 004355 419 a) What is the shape of the distribution? Explain. b) What percentage of universities in the sample hold at least 50 patents?...
only one problem (Exercise 1-11 only)
Uncertainties in Measurement and Propagation of Errors one measurement is made and often the peecision of the instrument is used as arn mate of the uncertainty. the instrument and the situation, the uncertainty Depending upon could be less than the precision of the instrument or it could be more. For example, in measuring we may estimate the distance between the small est subdivision (mm) if we rurn the meter stick onto its side to...
D-H is what I’m needing help with
Winter 19 Capstone Project (1)- AutoRecovered Compatibility Mode ayout References Mailings Review View Help Soda PDF Creator Tell me what you want to do Find - be Replace Select . A"A" Aa- ·-·-·-·--釗町 LNormal] Heading 1 Heading 1 Heading2 Heading3Select Heading 3- ' A. ρ.스. E-3-B- Heading 2 Dictate Paragraph Editing t is temporanily stored on your computer. Save vated To keep using Wond without interruption activate before Sunday, January 13, 2012. Activate...
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