average total billirubine concentration in human serum is 11.25 umol/l,standard deviain is 3.88umol/l.theconcentration,accepted as critical in...
average total billirubine concentration in human serum is 11.25 umol/l,standard deviain is 3.88umol/l.theconcentration,accepted as critical in a liver function test i greater then 18 umol/l(the test is positive for higher concentrations).Assuming normal distribution of serum billirubin concentration in he population,calculate specifity of this test.what is the probability that healthy person has this test positive?
Homework Answers
Add Answer to:
average total billirubine concentration in human serum is 11.25
umol/l,standard deviain is 3.88umol/l.theconcentration,accepted as
critical in...
A blood test is developed to screen for a certain type of allergy in human beings....
A blood test is developed to screen for a certain type of allergy in human beings. Individuals who have the allergy tend to have elevated serum concentration of the allergen-specific antibody. In particular, among these allergic individuals, their allergen-specific antibody concentrations follow the Normal distribution with an average of 400 units per litre (U/L) and a standard deviation of 80 U/L. For individuals without the allergy, their allergen-specific antibody concentrations also follow the Normal distribution, but with an average of...
Suppose that blood chloride concentration (mmol/L) has a normal distribution with mean 108 and standard deviation 2.
Suppose that blood chloride concentration (mmol/L) has a normal distribution with mean 108 and standard deviation 2. (a) What is the probability that chloride concentration equals 109? Is less than 109? Is at most 109? (Round your answers to four decimal places.) equals 109 0 less than 109 0.6915 at most 109 0.6915 (b) What is the probability that chloride concentration differs from the mean by more than 1 standard deviation? (Round your answer to four decimal places.) Does this probability depend...
Assume that human body temperatures are normally distributed with a mea of 98.18°F and a standard deviation of 0.61 F a. A hospital uses 100.6 F as the lowest temperature considered to be a fever. Wh...
Assume that human body temperatures are normally distributed with a mea of 98.18°F and a standard deviation of 0.61 F a. A hospital uses 100.6 F as the lowest temperature considered to be a fever. What percentage of nomal and healthy persons would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6 F is appropriate? b. Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature be, if...
can you do problem (c)? Suppose that blood chloride concentration (mmol/L) has a normal distribution with...
can you do problem (c)?
Suppose that blood chloride concentration (mmol/L) has a normal distribution with mean 105 and standard deviation 5 What is the probability that chloride concentration equals 106? Is less than 106? Is at most 106? (Round your answers to four decimal places.) equals 106 less than 106 at most 106 (a) 0.5793 05793 (b) What is the probability that chloride concentration differs from the mean by more than 1 standard deviation? (Round your answer to four...
11. A random sample of 25 statistics examinations was taken. The average score in the sample...
11. A random sample of 25 statistics examinations was taken. The average score in the sample was 76 with a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average examination score is 70.02 to 81.98 6. 69.82 to 82.18 70.06 to 81.94 d. 69.48 to 82.52 2. c. 12. It is known that the population variance equals 484. With a 0.95 probability, the sample size that needs to be taken to estimate...
3. The long-term average October precipitation in Syracuse is 3.36 inches, with a standard deviation of...
3. The long-term average October precipitation in Syracuse is 3.36 inches, with a standard deviation of 1.48 inches. Assuming a normal distribution, what is the probability that less than 1.0 inches of precipitation will occur in any October? What is the probability that more than 5.0 inches will occur? 4. (15 Points) A chemical industry discharges a waste contaminated with trichloroethylene (TCE) to the city sewer system. By law, the concentration of TCE must be 0.1 ug/L or less. To...
Suppose a geologist believes that the average chloride concentration in her local water supply is above...
Suppose a geologist believes that the average chloride concentration in her local water supply is above the national average of 75 ppm. The geologist defines a null hypothesis, Ho:u = 75 ppm, to reflect the mean chloride concentration in the national water supply. She formulates an alternative hypothesis, H1: u > 75 ppm, to indicate that her locality has a higher concentration of chloride in its water supply, on average. In these hypotheses, y represents the true mean concentration of...
13. +-6.66 points WaneFMAC7 9.5.033. My Notes IQ scores (as measured by the Stanford-Binet intelligence test) in a certain country are normally distributed with a mean of 100 and a standard deviation...
13. +-6.66 points WaneFMAC7 9.5.033. My Notes IQ scores (as measured by the Stanford-Binet intelligence test) in a certain country are normally distributed with a mean of 100 and a standard deviation of 11. Find the approximate number of people in the country (assuming a total population of 323,000,000) with an IQ higher than 120. (Round your answer to the nearest hundred thousand.) people 14. 0/6.66 points | Previous Answers My Notes This exercise uses the normal probability density function...
Find the indicated critical z value. the value of zan that corresponds to a confidence level...
Find the indicated critical z value. the value of zan that corresponds to a confidence level of 97 80% Use the given degree of confidence 2) Of 88 selected and sample data to construct a confidence interval for the population proportion p adults selected randomly from one town 69 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance the given degree of confidence and sample data to...
THANK YOU IN ADVANCE FOR HELPING ME! i appreciate this soo much! this has helped me...
THANK YOU IN ADVANCE FOR HELPING ME! i appreciate this soo
much! this has helped me a lot especially throught times like this.
im so grateful for
your help
1
2
3
4
(1 point) The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution with a mean of 30 seconds and a standard deviation of 2.3 seconds. You wish to see if the mean time is changed by vigorous exercise, so you have...
Suppose that blood chloride concentration (mmol/L) has a normal distribution with mean 108 and standard deviation 2. (a) What is the probability that chloride concentration equals 109? Is less than 109? Is at most 109? (Round your answers to four decimal places.) equals 109 0 less than 109 0.6915 at most 109 0.6915 (b) What is the probability that chloride concentration differs from the mean by more than 1 standard deviation? (Round your answer to four decimal places.) Does this probability depend...
Assume that human body temperatures are normally distributed with a mea of 98.18°F and a standard deviation of 0.61 F a. A hospital uses 100.6 F as the lowest temperature considered to be a fever. What percentage of nomal and healthy persons would be considered to have a fever? Does this percentage suggest that a cutoff of 100.6 F is appropriate? b. Physicians want to select a minimum temperature for requiring further medical tests. What should that temperature be, if...
can you do problem (c)?
Suppose that blood chloride concentration (mmol/L) has a normal distribution with mean 105 and standard deviation 5 What is the probability that chloride concentration equals 106? Is less than 106? Is at most 106? (Round your answers to four decimal places.) equals 106 less than 106 at most 106 (a) 0.5793 05793 (b) What is the probability that chloride concentration differs from the mean by more than 1 standard deviation? (Round your answer to four...
11. A random sample of 25 statistics examinations was taken. The average score in the sample was 76 with a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average examination score is 70.02 to 81.98 6. 69.82 to 82.18 70.06 to 81.94 d. 69.48 to 82.52 2. c. 12. It is known that the population variance equals 484. With a 0.95 probability, the sample size that needs to be taken to estimate...
3. The long-term average October precipitation in Syracuse is 3.36 inches, with a standard deviation of 1.48 inches. Assuming a normal distribution, what is the probability that less than 1.0 inches of precipitation will occur in any October? What is the probability that more than 5.0 inches will occur? 4. (15 Points) A chemical industry discharges a waste contaminated with trichloroethylene (TCE) to the city sewer system. By law, the concentration of TCE must be 0.1 ug/L or less. To...
Suppose a geologist believes that the average chloride concentration in her local water supply is above the national average of 75 ppm. The geologist defines a null hypothesis, Ho:u = 75 ppm, to reflect the mean chloride concentration in the national water supply. She formulates an alternative hypothesis, H1: u > 75 ppm, to indicate that her locality has a higher concentration of chloride in its water supply, on average. In these hypotheses, y represents the true mean concentration of...
13. +-6.66 points WaneFMAC7 9.5.033. My Notes IQ scores (as measured by the Stanford-Binet intelligence test) in a certain country are normally distributed with a mean of 100 and a standard deviation of 11. Find the approximate number of people in the country (assuming a total population of 323,000,000) with an IQ higher than 120. (Round your answer to the nearest hundred thousand.) people 14. 0/6.66 points | Previous Answers My Notes This exercise uses the normal probability density function...
Find the indicated critical z value. the value of zan that corresponds to a confidence level of 97 80% Use the given degree of confidence 2) Of 88 selected and sample data to construct a confidence interval for the population proportion p adults selected randomly from one town 69 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance the given degree of confidence and sample data to...
THANK YOU IN ADVANCE FOR HELPING ME! i appreciate this soo
much! this has helped me a lot especially throught times like this.
im so grateful for
your help
1
2
3
4
(1 point) The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution with a mean of 30 seconds and a standard deviation of 2.3 seconds. You wish to see if the mean time is changed by vigorous exercise, so you have...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago