Question

In: Statistics and Probability

10. (8) In a faraway land, there are 80% white people. There are 25% of white...

10. (8) In a faraway land, there are 80% white people. There are 25% of white race will have a particular disease, while there are only 8% of non-white will have such a disease.

(a) What is the disease rate in that population?

(b) If a randomly selected person have the disease, what is the chance the person is white?

Solutions

Expert Solution

a) The disease rate in population is 21.6%.

b) If a randomly selected person have disease, the chance the person is white is 0.25.

Note Since the disease rate was in decimal, for further calculation it is rounded up, because person count can not be in decimal.

orchestra answered 2 years ago
Next > < Previous

Related Solutions

(14) In a faraway land, there are 80% white people. There are 25% of people have...
(14) In a faraway land, there are 80% white people. There are 25% of people have a particular disease. And if you randomly select a person, that person has 20% chance of being white and have the disease. What proportion of students are non-white and who is healthy? Kelly’s race is white, what is the chance that she has this disease? Are the events of being white and having the disease independent events? If you randomly select 10 people, what...
4. Families in a Faraway LandIn a faraway land, • 20% of families have no children,...
4. Families in a Faraway LandIn a faraway land, • 20% of families have no children, • 20% of families have exactly 1 child, • 30% of families have exactly 2 children, • 20% of families have exactly 3 children, • 10% of families have exactly 4 children, • no families have more than 4 children, and• 55% of children are boys. (a) If you randomly choose a family from this faraway land, what is the expected number of children...
Suppose there are 10 black quarterbacks and 25 white quarterbacks in the NFL draft, and that...
Suppose there are 10 black quarterbacks and 25 white quarterbacks in the NFL draft, and that all quarterbacks are of equal ability; specifically, all quarterbacks in the draft have a 20% chance of succeeding in the NFL. However, suppose NFL coaches have an incorrect view that white quarterbacks are more likely to succeed than black quarterbacks. As a result, they decide to cut ½ of all black quarterbacks that were drafted and 1/5 of all white quarterbacks that were drafted....
In Country Faraway, cigarettes are forbidden, so people trade cigarettes in a black market. The cigarette...
In Country Faraway, cigarettes are forbidden, so people trade cigarettes in a black market. The cigarette demand is QD = 12 − P, and the cigarette supply is Qs = 2P. Find the equilibrium price and quantity in the black market. The government becomes aware of the black market and reinforces the police so that half of the cigarette supply would be seized and destroyed. Under this circumstance, what are the demand and supply functions? Show the change by using...
Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25,...
Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25, = 8.13 and s = 0.3. Assume the sample is selected from a normally distributed population. 7. Test H0: π = 0.25 versus HA: π 0.25 with p = 0.33 and n = 100 at alpha = 0.05 and 0.10. 8. Test at α = 0.01 the hypothesis that a majority (more than 50%) of students favor the plus/minus grading system at a university...
Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25,...
Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25, = 8.13 and s = 0.3. Assume the sample is selected from a normally distributed population. 7. Test H0: π = 0.25 versus HA: π 0.25 with p = 0.33 and n = 100 at alpha = 0.05 and 0.10. 8. Test at α = 0.01 the hypothesis that a majority (more than 50%) of students favor the plus/minus grading system at a university...
25) a) In 10 samples drawn from a main mass, on average of which 8% of...
25) a) In 10 samples drawn from a main mass, on average of which 8% of the substances produced are not known to comply with the standards; calculate the probability of finding no defective products, at least one defective product. Calculate the mean and standard deviation of this distribution according to the Binomial distribution. b) On average, 2 people migrate abroad every 50,000 people every year. In a particular year in a city of 100,000 people; Calculate the probability according...
A Canada-USA committee is to be formed by choosing 10 people from 25 possible applicants. a)...
A Canada-USA committee is to be formed by choosing 10 people from 25 possible applicants. a) How many committees are possible? b) If 10 applicants are Canadian and 15 are American, how many committees have equal representation? c) Two brothers, both from Canada, are on the committee. How many committees will have equal representation? Clearly label each part and show your work.
Two pink-flowered azaleas are crossed. The cross produces are 25 pink, 13 white, and 10 lavender-flowered...
Two pink-flowered azaleas are crossed. The cross produces are 25 pink, 13 white, and 10 lavender-flowered plants. The color trait could be monogenic with incomplete dominance (1:2:1) or digenic with epistasis (9:4:3). What statistical test could you perform to test this hypothesis? Does this test actually allow you to distinguish between these hypotheses? Explain and show your calculations. Note: A p-value of 0.05 equals 5.99 equals for two degrees of freedom.
Charlize Theron conquered the peaceful land of Rombus as the people in this land actually agreed...
Charlize Theron conquered the peaceful land of Rombus as the people in this land actually agreed with the Mirror that Kristen Stewart is prettier than Charlize. You are now the economic advisor for Charlize the Supreme Overlord of Rombus. All people of Rombus really really love eating chicken nuggets and the demand of chicken nuggets is highly inelastic. The supply of chicken nuggets is fairly elastic. Charlize hates chicken nuggets as they generally look like Kristen. The general public is...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT