statistics

Q) 75% of the population in Guinea, Africa is infected with malaria. Suppose
a physician sees 6 patients in a given hour. Assuming these conditions are met, find the mean and standard deviation of the distribution.

Help please!

  1. 👍 0
  2. 👎 0
  3. 👁 154
  1. Conditions:
    1. probability remains constant throughout (i.e. for every one of the six patients.
    2. the outcome is of type Bernoulli, i.e. yes/no, 1/0, etc. In this case, infected or not.
    3. The number of patients is constant at 6 per hour.
    4. Sampling can be assumed to be random and independent.

    These conditions qualify the distribution as binomial, with parameters n=6, p=0.75 (probability of infection), and q=1-p=0.25 (probability of non-infection.

    Can you find the mean and standard deviation (or variance) in terms of n, p and q?

    1. 👍 0
    2. 👎 0
  2. would i therefore need to be doing
    sigma = square root of [np (1-p)]?

    1. 👍 0
    2. 👎 0
  3. oh nevermind, i get what you are saying :)
    would you recommend that i do two different groups of mean and variance,
    one group is for having malaria,
    the other for not?

    1. 👍 0
    2. 👎 0
  4. I do not recommend doing the same thing both ways because this could cause confusion and consequent errors.

    I suggest you document clearly. For example,
    p=0.75=proportion of population infected
    n=sample size (6 patients per hour)
    so
    np=mean (expected value) of number of infected patients out of 6.
    √(npq)=s.d. of mean.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Health

    1.) Someone can only become infected by hiv or an sti by a.) Drinking from the same water glass as an infected indivisual b) Using the same restroom as an infected indivisual c) Kissing an infected indivisual*** d) Participating

    asked by It ees What It IS on May 7, 2020
  2. Social Studies

    Drag the types of government to the correct nation. Words may be used once, more than once or not at all. parliamentary democracy autocracy presidential democracy monarchy Kenya South Africa Nigeria Equatorial Guinea

    asked by Sky on October 19, 2018
  3. statistics

    Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The

    asked by Vanessa on April 15, 2014
  4. medical billing and coding

    Under CPT's definition, after a consultation, who takes responsibility for the patient's care? A.the referring physician B.the consulting physician C.the PCP D.the specialist

    asked by Felicia on November 16, 2008
  5. Economics (39)

    Suppose a random sample of size 40 is selected from a population with = 9. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The

    asked by Mia on May 9, 2014
  1. Math

    Part of the population of 4,750 elk at a wildlife preserve is infected with a parasite. A random sample of 50 elk shows that 3 of them are infected. How many elk are likely to be infected?

    asked by Ja'Quavius on November 15, 2018
  2. Science

    In guinea pigs, black fur (B) is dominant over white fur (b). Cross a heterozygous (hybrid) black guinea pig with a homozygous (purebred) white guinea pig. Complete a Punnett square, identify the genotype(s), phenotype(s), and

    asked by Blah on February 7, 2019
  3. Science

    1. Suppose a patient comes in to see a physician. This patient lacks the ability to keep warm and needs to wear heavy clothing even during mild temperatures. Which system of this patient’s body should the physician be concerned

    asked by Anonymous on February 2, 2015
  4. Statistics and probability

    In a town the probability that an inhabitant catches malaria in any month is 0.2A farm in the town employed 15 local people Find the mean and variance of the number of employees catching malaria

    asked by Eryk on October 29, 2015
  5. Geography PLZZZZ HELP AND CHECK ANSWERS!!!!!!!!!!!

    Which country shares an island with another nation? (1 point) A.1 B.2 C.3 (My answer) D.4 2. The number 2 marks which country? (1 point) A.New Zealand B.Indonesia C.New Guinea D.Tuvalu(My answer) 3. Based on the data, which nation

    asked by Kailyn on January 31, 2017
  6. medical insurance

    the patient is seen by his family physician for follow-up treatment of recently diagnosed asthmatic bronchitis. the physician's fee is 75$. the patient copayment is 20$, and the patient is not required to pay any additional amount

    asked by erika on July 14, 2016

You can view more similar questions or ask a new question.