The length of time listeners tune in to a radio station is normally distributed with a...
The length of time listeners tune in to a radio station is normally distributed with a mean of 15.0 minutes and a standard deviation of 3.5 minutes. 80% of listeners are tuned in for less than how many minutes?
A. 20.58
B.15.74
C.20.58
D.17.96
Homework Answers
=17.96
Z=0.8416....................by using Z table or by using Excel command =NORMSINV(0.8)
| D) 17.96 |
Add Answer to:
The length of time listeners tune in to a radio station is
normally distributed with a...
1. A gas station opens at a time which is Normally distributed with the mean of...
1. A gas station opens at a time which is Normally distributed with the mean of 8:45 am and standard deviation of 10 minutes; similarly, its closing time is Normally distributed with the mean value at 5:12 pm and standard deviation of 15 minutes. If customers arrive as a Poisson Process with an average rate of 11.3 per hour, find the mean number of customers to be served in one such day, and the corresponding standard deviation. What is the...
3. The time needed to complete a final examination is normally distributed with a mean of...
3. The time needed to complete a final examination is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (i.e., between 60 and 75 minutes)? c. What is the longest time in minutes it...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 8...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions: A) What is the probability of completing the exam in ONE hour or less? B) what is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes? C) Assume that the class has 60 students and that the...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. (a) What is the probability of completing the exam in one hour or less? (b) What is the probability that a student will complete the exam in more than 60 minutes but less than 65 minutes? (c) Assume that the class has 50 students and that the examination period is...
The length of time needed to complete a certain test is normally distributed with mean 23...
The length of time needed to complete a certain test is normally distributed with mean 23 minutes and standard deviation 11 minutes. Find the probability that it will take more than 20 minutes to complete the test.
The length of time a person takes to decide which shoes to purchase is normally distributed...
The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase. Is this outcome unusual? Probability is 0.045, which is unusual as it is less than 5% Probability is 0.954, which is usual as it is greater than 5% Probability is 0.045, which is...
The time needed to complete a final examination in a particular college course is normally distributed...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. (a) What is the probability of completing the exam in one hour or less? (Round your answer to four decimal places.) Incorrect: Your answer is incorrect. .0233 (b) What is the probability that a student will complete the exam in more than 60 minutes but less than...
The time needed to complete a final examination in a particular college course is normally distributed...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. Answer the following questions. Round the intermediate calculations for z value to 2 decimal places. Use Table 1 in Appendix B a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in...
The time required to assemble an electronic component is normally distributed, with a mean of 12...
The time required to assemble an electronic component is normally distributed, with a mean of 12 minutes and a standard deviation of 1.5 minutes. Find the probability that a particular assembly take less than 10 minutes. a. 0.6542 b. 0.0918 c. 0.8164 d. 0.9082 e. 0.4541
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes.
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals)? c. Assume that the class has 60 students...
1. A gas station opens at a time which is Normally distributed with the mean of 8:45 am and standard deviation of 10 minutes; similarly, its closing time is Normally distributed with the mean value at 5:12 pm and standard deviation of 15 minutes. If customers arrive as a Poisson Process with an average rate of 11.3 per hour, find the mean number of customers to be served in one such day, and the corresponding standard deviation. What is the...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. Answer the following questions. Round the intermediate calculations for z value to 2 decimal places. Use Table 1 in Appendix B a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in...
Most questions answered within 3 hours.
-
Table salt contains 39.33 g of sodium per 100 g of salt. The
U.S. Food and...
asked 9 minutes ago -
C&A records the following profit figures for the last six
months in Excel for a linear...
asked 7 minutes ago -
This needs to be done in c++11 and be compatible with g++
compiling
Project description:
Write...
asked 8 minutes ago -
.
NEED ANSWER ASAP
******NEW ANSWER NEVER USED BEFORE****
Write a page paper on conducting marketing...
asked 10 minutes ago -
Assume that capital markets are competitive and that the
international Fisher hypothesis holds. The one-year interest...
asked 36 minutes ago -
Solid potassium phosphate is slowly added to 150 mL of a 0.0518
M calcium nitrate solution....
asked 51 minutes ago -
(CO 2) A field can be added to a report to
values for two or more...
asked 2 hours ago -
Identify 3 research scenarios that might provide a low,
medium, and high degree of variability in...
asked 3 hours ago -
how
does gravity affect the trajectory of projectile? what would be the
shape of the trajactory...
asked 3 hours ago -
Two small plastic spheres are given positive electrical charges.
When they are a distance of 15.4...
asked 4 hours ago -
An acidic solution containing gold ions is
electrolyzed, producing gaseous oxygen (from water) at the anode...
asked 4 hours ago -
Assume that the population of Mexico is 128
million and that the population increases 1.01
percentannually....
asked 5 hours ago