Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Wolfboy
Group Title
A local weather forecaster is accurate 85% of the time when predicting precipitation for the day. What is the probability that she will make correct precipitation predictions 4 days in a row?
about 54%
about 53%
about 52%
about 47%
 2 years ago
 2 years ago
Wolfboy Group Title
A local weather forecaster is accurate 85% of the time when predicting precipitation for the day. What is the probability that she will make correct precipitation predictions 4 days in a row? about 54% about 53% about 52% about 47%
 2 years ago
 2 years ago

This Question is Closed

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
The probability of being correct on one day is 0.85. The forecast for each day is separate and independent of the other daily forecasts. Therefore the compound event, correct predictions 4 days in a row, is the product of the separate probabilities of being correct for each of the 4 days. P(correct 4 days) = 0.85 * 0.85 * 0.85 * 0.85. Can you calculate the probability and convert to a percentage ?
 2 years ago

Wolfboy Group TitleBest ResponseYou've already chosen the best response.0
ehh i might need some help with that
 2 years ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
Have you got a calculator handy?
 2 years ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
Multiply 0.85 by 0.85. Then multiply the answer by 0.85. Then multiply that answer by 0.85. What do you get?
 2 years ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
Correct. To convert to a percentage multiply 0.52200625 by 100. Then choose the answer that is closest to the result.
 2 years ago

Wolfboy Group TitleBest ResponseYou've already chosen the best response.0
Tank you lots!
 2 years ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
You're welcome :)
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.