1 answer

2. I4] Prior to a test, 1/3 of a class of students study, and do so...

Question:

2. I4] Prior to a test, 1/3 of a class of students study, and do so for n hours, where 0<ns 4 (n does not have to be an integ

2. I4] Prior to a test, 1/3 of a class of students study, and do so for n hours, where 0<ns 4 (n does not have to be an integer here). The other 2/3 of the class do not study at all. Those who study have a probability of ns of passing the test, and those who do not study have a 20% chance of passing. 117096 of all students that passed the test actually studied, what is a reasonable estimate for the length of thetir have of "4 of passing the test, and those wh n+1 study time? Hint: Use Bayes' Theorem to solve

Answers

P(pass the test)=P(study and pass)+P(not study and pass)

=(1/3)*(n+1)/5+(2/3)*0.2

hence P(studied|pass)=P(study and pass)/P(pass)=((1/3)*(n+1)/5)/((1/3)*(n+1)/5+(2/3)*0.2)=0.7

(n+1)/15 =0.7*(n+1)/15+0.28/3

0.3*(n+1)=1.4

n+1 =4.667

n=3.667~ 4



.

Similar Solved Questions

1 answer
3. [8 marks) How could IR spectroscopy be used to distinguish between the following pair of compounds for each prob...
3. [8 marks) How could IR spectroscopy be used to distinguish between the following pair of compounds for each problem? and and and and...
1 answer
Mechanics of Materials. Need Help (b) The A-36 solid steel shaft is 3.5 m long and...
Mechanics of Materials. Need Help (b) The A-36 solid steel shaft is 3.5 m long and has a diameter of 60 mm. The shaft is used to transmit a torque of T-524 Nm from the engine to the generator. Determine the angle of twist () of the shaft. The shear modulus of elasticity (G) of the shaft material ...
1 answer
2. Whatare the ho main techo measure HOMOand LUMO levels in oroanic materials and what are...
2. Whatare the ho main techo measure HOMOand LUMO levels in oroanic materials and what are the pros and cons of each le,cost,convenence,acuracy,etc?...
1 answer
Use the triangle inequality to show that if -2<x<1 then |x2 +x |<6
use the triangle inequality to show that if -2<x<1 then |x2 +x |<6...
1 answer
Activit 36 41 1051 21 1 15 6 10 36 46 51 16 521 26 10...
Activit 36 41 1051 21 1 15 6 10 36 46 51 16 521 26 10 51 51 1110 21 1. How many Working Days does our schedule take to complete? 2. Assuming we don't work on weekends, if this project starts on February 5, 2018, what day will it finish on? 3. How many Calendar Days will this project take to comp...
1 answer
A 10-V-emf battery is connected in series with the following: a 2-uF capacitor, a 2- resistor,...
A 10-V-emf battery is connected in series with the following: a 2-uF capacitor, a 2- resistor, an ammeter, and a switch, initially open; a voltmeter is connected in parallel across the capacitor. After the switch has been closed for a relatively long period(several seconds, say) what are the current...
1 answer
Problem 5 - Rare outcomes and data set size Here we will be concerned with a biased coin for whic...
Problem 5 - Rare outcomes and data set size Here we will be concerned with a biased coin for which outcome 1 has a very low probability, i.e 0 < θι < 6o << 1. Assume our experiment consists of n independent tosses of this coin. 1. What is the probability po P(n1 0) that the ou...
1 answer
Question 2 (15%) This information relates to Cashew Real Estate Agency. Stockholders invested $35,000 in exchange...
Question 2 (15%) This information relates to Cashew Real Estate Agency. Stockholders invested $35,000 in exchange for common stock of the corporation. 2 Hires an administrative assistant at an annual salary of $36,000. 3 Buys equipment for $3,500 on account 6 Sells a house and lot for M Springer, co...
1 answer
QUESTION 40 A larpe curved Dam is created by rotating the triangle shape BCD through an...
QUESTION 40 A larpe curved Dam is created by rotating the triangle shape BCD through an angle of 60"radions) about vertical axis -9. The drawing is not to scale. -1035ft- 100ft dB 35 1 000ft Determine the Surface Area of the Dam's downstream face (created by the revolution of line DB). 105 (...
1 answer
2. Suppose A-1103132 10 9-2 (a) What are the dimensions of the four fundamental subspaces associated with A? (b) Find a basis for each of the four fundamental subspaces. 3. Solve this linear system u...
2. Suppose A-1103132 10 9-2 (a) What are the dimensions of the four fundamental subspaces associated with A? (b) Find a basis for each of the four fundamental subspaces. 3. Solve this linear system using an augmented matrix: 2. Suppose A-1103132 10 9-2 (a) What are the dimensions of the four fundam...
1 answer
Statistics from a county public health nurse is provided below. Assist her in completing her report...
Statistics from a county public health nurse is provided below. Assist her in completing her report by determining the rate for each vital statistic based on the following information. if a rate can not be calculated, note what information is missing. Provide the rate or information needed in co...
1 answer
I'm stuck trying to think of a topic to submit. Here is the instructions. I was...
I'm stuck trying to think of a topic to submit. Here is the instructions. I was thinking about something related to diabetes. Present a topic to create a case study on a complex health problem of their choice and that could be used in a high-fidelity simulation lab. The class is Advanced Pathoph...
1 answer
(a) Write down the Schrödinger equation in Dirac notation. (2%) (b) Write x-representation in one dimensional...
(a) Write down the Schrödinger equation in Dirac notation. (2%) (b) Write x-representation in one dimensional systems. (3%) down both time dependent and time independent Schrödinger equations in...
2 answers
How do you solve #x / 5 = 10#?
How do you solve #x / 5 = 10#?...
1 answer
Explain the answer CALCULATOR FULL SOREN PRINTER VERSION Brief Exercise 23-5 Sarasota Corporation had the following...
explain the answer CALCULATOR FULL SOREN PRINTER VERSION Brief Exercise 23-5 Sarasota Corporation had the following 2017 income statement. Sales revenue Cost of goods sold Gross profit Operating expenses (includes depreciation of $22,000) Net income $182,000 132,000 50,000 48,000 $2.000 The foll...
1 answer
Acme Services' CFO is considering whether to take on a new project that has average risk....
Acme Services' CFO is considering whether to take on a new project that has average risk. She has collected the following information: • The company has outstanding bonds that mature in 26 years. The bonds have a face value of $1,000, an annual coupon of 7.5%, and sell in the market today f...