An elevator has a placard stating that the maximum capacity is
23552355
lblong dash—1515
passengers. So,
1515
adult male passengers can have a mean weight of up to
2355 divided by 15 equals 157 pounds.2355/15=157 pounds.
If the elevator is loaded with
1515
adult male passengers, find the probability that it is overloaded because they have a mean weight greater than
157157
lb. (Assume that weights of males are normally distributed with a mean of
165 lb165 lb
and a standard deviation of
34 lb34 lb.)
Does this elevator appear to be safe?
The probability the elevator is overloaded is
nothing.
In: Statistics and Probability
An elevator has a placard stating that the maximum capacity is 1872 lbs long dash 12 passengers. So, 12 adult male passengers can have a mean weight of up to 1872 divided by 12 equals 156 pounds. If the elevator is loaded with 12 adult male passengers, find the probability that it is overloaded because they have a mean weight greater than 156 lb. (Assume that weights of males are normally distributed with a mean of 161 lb and a standard deviation of 27 lb.) Does this elevator appear to be safe? The probability the elevator is overloaded is ?
(Round to four decimal places as needed.)
In: Statistics and Probability
Elevator ride: Engineers are designing a large elevator that will accommodate 43 people. The maximum weight the elevator can hold safely is 8643 pounds. According to the National Health Statistics Reports, the weights of adult U.S. men have mean 189 pounds and standard deviation 63 pounds, and the weights of adult U.S. women have mean 170 pounds and standard deviation 72 pounds. Use the TI-84 Plus calculator.
(a) If 43 people are on the elevator, and their total weight is 8643 pounds, what is their average weight?
(b) If a random sample of 43 adult men ride the elevator, what is the probability that the maximum safe weight will be exceeded? Round the answer to at least four decimal places
(c) If a random sample of 43 adult women ride the elevator, what is the probability that the maximum safe weight will be exceeded? Round the answer to at least four decimal places.
In: Math
1)
a) Hold the top two corners of a piece of paper with your thumbs and index fingers. Holding the paper close to your mouth, blow across the top of the paper when it is hanging parallel to the floor. Do not split the airflow around the edge of the paper; aim to pass all the air over one side only.
b) Fold the opposite ends of an index card to form a small bridge. The folds should be about half an inch. Place the bridge on the tabletop and blow through the arch. Try to blow it off the table this way.
c) Tape a Ping-Pong ball to a length of a string. Make sure the string is securely attached to the ball. Go to one of the sinks and turn on a medium stream of water. Gently maneuver the ball into the stream of water. Gently pull the string to remove the ball from the stream.
Explain the results of each of your activities using Bernoulli’s principle
.a.Hanging Paper
:b.Bridge:
c.Ping-Pong Ball
2) Look up Bernoulli’s Principle in your text. The special case when the change in elevation is negligible can be useful. Explain this special case in your own words, with an emphasis on how the speed of the fluid affects the fluid pressure.
Please explain!
In: Physics
In: Math
Assume the probability that Cleveland wins a game over Golden State is 2/5 or 0.4.
A) What is the probability that Golden State wins the best of seven series over Cleveland in seven games?
B) What is the probability that Cleveland wins the series over Golden State in 6 games?
C) What is the probability that Golden State wins the series in 5 games?
D) What is the probability that Cleveland wins the NBA Championship?
In: Statistics and Probability
An elevator has a placard stating that the maximum capacity is
1944 lblong dash—12 passengers. So, 12 adult male passengers can have a mean weight of up to 1944 divided by 12 equals 162 pounds.1944/12=162 pounds.If the elevator is loaded with 12 adult male passengers, find the probability that it is overloaded because they have a mean weight greater than 162lb. (Assume that weights of males are normally distributed with a mean of 165 lb and a standard deviation of35 lb.) Does this elevator appear to be safe? The probability the elevator is overloaded is nothing.
(Round to four decimal places as needed.)
Does this elevator appear to be safe?
A.Yes, there is a good chance that
12
randomly selected people will not exceed the elevator capacity.
B.No, there is a good chance that
12
randomly selected people will exceed the elevator capacity.
C.No,
12
randomly selected people will never be under the weight limit.
D.Yes,12 randomly selected people will always be under the weight limit.
In: Statistics and Probability
An elevator has a placard stating that the maximum capacity is 1580 lblong dash 10 passengers. So, 10 adult male passengers can have a mean weight of up to 1580 divided by 10 equals 158 pounds. If the elevator is loaded with 10 adult male passengers, find the probability that it is overloaded because they have a mean weight greater than 158 lb. (Assume that weights of males are normally distributed with a mean of 168 lb and a standard deviation of 33 lb .) Does this elevator appear to be safe? The probability the elevator is overloaded is nothing . (Round to four decimal places as needed.) Does this elevator appear to be safe? A. Yes, 10 randomly selected people will always be under the weight limit. B. Yes, there is a good chance that 10 randomly selected people will not exceed the elevator capacity. C. No, there is a good chance that 10 randomly selected people will exceed the elevator capacity. D. No, 10 randomly selected people will never be under the weight limit
In: Statistics and Probability
A particular baseball team wins 68% of its games. Next week it will play 6 games. (a) What is the team’s expected number of wins during that week? (Round your answer to 2 decimal places.) (b) What is the probability that the team will win at least 5 games next week?
In: Statistics and Probability
Suppose the guests at the hotel have an average weight of 180 with a standard deviation of 50 pounds. An elevator is designed to carry only 10 people with a maximum capacity of 2400 pounds.
5. What is the mean of the sample mean?
6. What is the standard deviation for the sample mean of the 10 people? (Use 2 decimals)
7. If 10 guest ride the elevator at one time, what is the probability that the elevator is overweight? (Hint: If the 10 people weigh more than 2400 pounds, how much does each person have to weigh on average? (Use 4 decimals)
8. If 12 guests ride in the elevator at one time, now what is the probability that the elevator is overweight? (Hint: the standard deviation also changes here) (Use 4 decimals)
In: Statistics and Probability