Waste less time on Facebook — follow Brilliant.
×

Probability

Mr. X. Marketing director for ABC film production believes that the studio upcoming firm has a 70% chance of being hit, a 20% chance of being moderate and 10% chance of being a flop. To test his opinion Mr. .X organized two screenings. After each screening, the audience rates the film on a scale of 1 and 5 stars. From the past long experience it is known that a hit film will receive 4 or 5 stars 65% of the time,30% of the time it will receives 2 or 3 stars and 5% of the time it will receive ratings of 1 star. For the moderately successful film, the respective probabilities are 0.30,0.50 and 0.20 for flop. The respective probabilities are 0.10, 0.40 and 0.50 the results of two screening tests are independent of each other. Required :

a) If the first screening produces a score of 3 stars, what is the probability that a film is hit?

b) If the screening test produces a score of 3 stars and the second screening results in a score of 1 stars, what is the probability that a film is flop?.

Note by Nazir Shaban
1 year, 2 months ago

No vote yet
1 vote

  Easy Math Editor

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
    # 4 spaces, and now they show
    # up as a code block.

    print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 \( 2 \times 3 \)
2^{34} \( 2^{34} \)
a_{i-1} \( a_{i-1} \)
\frac{2}{3} \( \frac{2}{3} \)
\sqrt{2} \( \sqrt{2} \)
\sum_{i=1}^3 \( \sum_{i=1}^3 \)
\sin \theta \( \sin \theta \)
\boxed{123} \( \boxed{123} \)

Comments

There are no comments in this discussion.

×

Problem Loading...

Note Loading...

Set Loading...