Question

On a workday, the average decibel level of a busy street is 66 dB, with 180...

On a workday, the average decibel level of a busy street is 66 dB, with 180 cars passing a given point every minute. If the number of cars is reduced to 45 every minute on a weekend, what is the decibel level of the street?

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
On a workday, the average decibel level of a busy street is 71 dB, with 40...
On a workday, the average decibel level of a busy street is 71 dB, with 40 cars passing a given point every minute. If the number of cars is reduced to 10 every minute on a weekend, what is the decibel level of the street? ____ dB
Police recorded the average speed of cars driving on a busy street by a school. For...
Police recorded the average speed of cars driving on a busy street by a school. For a sample of 36 ​speeds, it was determined that the average amount over the speed limit for the 36 speeds was 12.3 mph with a standard deviation of 9 mph. The 95 ​% confidence interval estimate for this sample is 9.25 mph to 15.35 mph. ​a) What is the margin of error for this​ problem? ​b) What size sample is needed to reduce the...
At a taxi-stop on a busy street, the inter-arrival times of taxis dropping off passengers (and...
At a taxi-stop on a busy street, the inter-arrival times of taxis dropping off passengers (and then being ready for the pick up) have a mean 5 minutes with a standard deviation 1 minute. The taxis are not allowed to wait for customers at the stop. Customers arrive at the stop in a Poisson process once every 6 minutes on the average. (a) Determine the expected number of customers waiting, when a taxi leaves the stop. (b)What is the probability...
A rock band's music has an average sound level of 147 dB. (a) What would the...
A rock band's music has an average sound level of 147 dB. (a) What would the average level be if the intensity was reduced by 1/2? (b) What would the average level be if the intensity was reduced by 1/100? (c) What would the average level be if the intensity was doubled? (d) What would the average level be if the intensity was increased to 10 times the original value?
A traffic study was conducted on a particularly busy section of street. The peak traffic flow...
A traffic study was conducted on a particularly busy section of street. The peak traffic flow was averaged over a 5 day period and the following results were determined: peak flow mean = 160.4 cars; peak flow variance = 30.5 cars2 The traffic study was done to determine if more than 150 cars were passing through the section during peak periods on average. Hypothesis testing was performed, with the alternative hypothesis being that more than 150 cars are passing through...
Traffic volume is an important factor for determining the most cost-effective method to surface a road....
Traffic volume is an important factor for determining the most cost-effective method to surface a road. Suppose that the average number of vehicles passing a certain point on a road is 2 every 30 seconds. Explain why to find the probability that more than 5 cars will pass the point in 1 minute (60 seconds) can be found with the R-code: 1-ppois(5,4) #or ppois(5,4, lower.tail = FALSE) Hint: First find what the average number of vehicles passes through the point...
Before collecting any sample data, the fast-food chain in Problem below stipulates that the level of...
Before collecting any sample data, the fast-food chain in Problem below stipulates that the level of Type I error should be no larger than α = 0:01, and that if the number of cars passing the site is at or above µ= 210 per hour, then the level of Type II error also should not exceed β= 0:01. The population standard deviation is estimated as being no larger than σ= 40. What sample size is required to achieve these objectives?...
According to a Danish researcher, if you drop your average daily activity level by taking elevators...
According to a Danish researcher, if you drop your average daily activity level by taking elevators instead of stairs, by parking your car in the closest space, or by never walking to run errands, you increase your risk of diabetes, heart disease, and premature death. The researcher studied two independent groups of healthy men that were randomly assigned into two different experiments (eight in the first group with an average age of 27 and an average body mass index (BMI)...
A dean of a business school is interested in determining whether the mean grade point average...
A dean of a business school is interested in determining whether the mean grade point average (GPA) of students is different from 3.04. The population standard deviation is 0.41. A random sample of 200 students indicates a sample mean GPA of 2.94. A test is conducted at the 0.05 level of significance to determine whether the mean grade point average (GPA) of students is different from 3.04. What is the test statistic value in this test? Select one: a. -0.244...
Athlete:    Brian, Male Triathlete Level: Considering turning professional Age: 24 Weight:    170.2 lbs (8.5%...
Athlete:    Brian, Male Triathlete Level: Considering turning professional Age: 24 Weight:    170.2 lbs (8.5% Body Fat) Height: 5' 11.75" Upcoming Saturday Training Schedule: 3 hour and 45 minute bike ride from 7:00 a.m. until 10:45 a.m. (expected temperature: 84 degrees F) Swim for 1 hour in the afternoon, moderate effort. Part 1: Total Calories and Grams: 2 Methods (Show all Calculations and Work) 1 A. Method 1. Using the following, calculate daily grams of carbohydrates, protein, and fat...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT