In last week's assignment, you calculated mean free path, total absorption, and reverberation time for a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m. The floor is hardwood, = .15 at 500 Hz. The walls are gypsum wallboard (GWB), = .30 at 500 Hz. The ceiling is acoustic ceiling tile (ACT), = .95 at 500 Hz. 2) For a person speaking, what is the critical distance in this room? Use Q = 2.

In last week's assignment, you calculated mean free path, total absorption, and reverberation time for a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m. The floor is hardwood, = .15 at 500 Hz. The walls are gypsum wallboard (GWB), = .30 at 500 Hz. The ceiling is acoustic ceiling tile (ACT), = .95 at 500 Hz. 2) For a person speaking, what is the critical distance in this room? Use Q = 2.

Name: In last week's assignment, you calculated mean free path, total absorp
Uploaded: 2024-03-20T07:06:16.000Z
Channel: Bartleby
Description: In last week's assignment, you calculated mean free path, total absorption, and reverberation time for a room that is 4 m long, 7 m wide, and has a ceiling height of 3 m.The floor is hardwood, = .15 at 500 Hz.The walls are gypsum wallboard (GWB), =

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 31PPS

See similar textbooks

Similar questions

Thomas wants to compare the mean concentration of carbon monoxide (CO) on residential versus commercial streets, since these differ in terms of car traffic. In each of three neighborhoods of Montréal (named A, B, and C below), he randomly chooses four locations for each type of street, for a total of 24 observations (2 street types x 3 neighborhoods x 4 locations). At each location, he measures CO concentration in the air over a period of 10 hours (8:00 AM-6:00 PM), and obtains the following data (in ppm/h). 10-a) Draw a graph that gives insight into the possible presence of an interaction between the two classification factors. Do you suspect the presence of an interaction? Explain why. IMG 4569 10-b)Test whether or not the difference between residential and commercial streets in mean atmospheric CO concentration is the same among the three neighborhoods, and whether or not CO concentration in the air is the same, on average, for the two types of streets. Note that Neighborhood is…
Thomas wants to compare the mean concentration of carbon monoxide (CO) on residential versus commercial streets, since these differ in terms of car traffic. In each of three neighborhoods of Montréal (named A, B, and C below), he randomly chooses four locations for each type of street, for a total of 24 observations (2 street types x 3 neighborhoods x 4 locations). At each location, he measures CO concentration in the air over a period of 10 hours (8:00 AM-6:00 PM), and obtains the following data (in ppm/h). Question: Test whether or not the difference between residential and commercial streets in mean atmospheric CO concentration is the same among the three neighborhoods, and whether or not CO concentration in the air is the same, on average, for the two types of streets. Note that Neighborhood is considered a random block factor in the ANOVA. Use significant level= 0.05.
Naini, Cobourne, McDonald and Donaldson (2008) reported that a specific ratio of height to face length of 1 to 8.5 tended to be rated as most attractive—almost exactly what Da Vinci’s idealized Vitruvian Man, predicts as “perfection” in the human form. For this study, we want to see if there is a relationship between a person’s height and head circumference. We get a random sample of 40 people and measure both their height and their head size to the nearest centimeter. What test should you use and why?
The specifications for a plastic liner for a concrete highway project calls for thickness of 3.0 mm±0.10mm. The standard deviation of the process is estimated to be 0.02mm. What is the The lower specification limit for this product?
To compare the effectiveness of competing fertilizers on increasing radish size, researchers randomly divided 20 radish seeds of the same type into two groups of 10 and planted them. To one of the groups they applied Fertilizer A, and to the other, they applied Fertilizer B. Then they measured the radii of the radishes grown from the seeds in the two groups. The results of the experiment are shown in the tables. The mean radius for the group that was given Fertilizer A is (less,greater)than that for the group that was given Fertilizer B. The variability of the radii for the group that was given Fertilizer A is (less/greater)than that for the group that was given Fertilizer B. The data for both of the groups produces a (uniform, non-uniform) distribution.
A machine dispenses water into a glass. Assuming that the amount of water dispensed follows a continuous uniform distribution from 6 ounces to 10 ounces, the standard deviation of the amount of water dispensed is:
A taxi company manager is trying to decide whether the use of radial tires instead of regular belted tires improves fuel economy. Twelve cars were equipped with radial tires and driven over a prescribed test course. Without changing drivers, the same cars were then equipped with regular belted tires and driven once again over the test course. The gasoline consumption, in kilometers per liter, was recorded as follows: (image attached) Can we conclude that cars equipped with radial tires give better fuel economy than those equipped with belted tires? Assume the populations to be normally distributed. Use both p-value and critical value approach.
The height of personnel of a security service are normally distributed with a mean of 161cm and a standard deviation of 8cm. I) what proportion of the security service have heights between 152cm and 176 cm.Ii) if 25% of the personnel are more than h cm tall, find the value of h.
A random sample of 25 tires gave the average life as 38000 km and S.D. as 5000 km. Can it be concluded that the sample is drawn from a population with a mean life of 40000 km?
The company that manufactures car engine spark plugs has stated in its test that the durability of the plugs follows the normal distribution N(45000 km, 1600 km). After how many driving kilometers do the plugs have to be replaced if we want to be 99.9% sure that the plugs will not broken before replacement? Show your calculations in Excel cells, and justify calculations.
The existing machine setting of a factory produces bearings with a diameter that is normally distributed with mean and standard deviation equal to 3.0005 cm and 0.0010 cm, respectively. Customer specifications require the bearing diameters to lie in the interval [2.998, 3.002]. Those outside the interval are considered scrap and must be re-machined. With the existing machine selling, what fraction of total production will not be considered scrap?
A batch of 3000 inverters from the production line has a mean output voltage of 337.8 V and the Standard deviation of the output voltage is 3.D V (where D is the last two digits of your student number inserted to the right of the decimal point). If the voltages of the produced inverters are assumed to be normally distributed, determine the following: The number of inverters with output voltages greater than 336.9 V. The number of inverters with output voltages less than 337.1 V, The number of inverters with output voltages between 336.2 V and 339.8 V.