Question
In: Statistics and Probability
Emissions of nitrogen oxides, which are major constituents of smog, can be modeled using a normal...
Emissions of nitrogen oxides, which are major constituents of
smog, can be modeled using a normal distribution with a mean of 1.7
ppb and a standard deviation of 0.4 ppb. Suppose 14 cars are
selected at random. What is the probability that the average
emissions of the 14 cars is less than 1.5 ppb?
Picture: Z-score: Answer:
Solutions
orchestra answered 1 year agoRelated Solutions
Combustion produces oxides of nitrogen and oxides of sulfur, which can be oxidized to nitrate (NO3-)...
Combustion produces oxides of nitrogen and oxides of sulfur,
which can be oxidized to nitrate (NO3-) and
sulfate (SO42-) respectively in the
atmosphere: the nitrate and sulfate subsequently may be deposited
by both wet and dry processes. Cite and explain specific regional
or global-scale problems, or potential problems, that may be
exacerbated by increased levels of nitrate and sulfate deposition
in precipitation.
Which of the following would be modeled by first law diffusion? a. Addition of Nitrogen to...
Which of the following would be modeled by first law diffusion?
a. Addition of Nitrogen to a gear to increase hardness. b. Loss of
helium through the walls of a rubber balloon. c. Carbon diffusion
into the furnace atmosphere during heating of test specimens in a
laboratory oven.
The flow in a river can be modeled as a log-normal distribution. From the data, it...
The flow in a river can be modeled as a log-normal distribution.
From the data, it was estimated that, the probability that the flow
exceeds 1100 cfs is 50% and the probability that it exceeds 100 cfs
is 90%. Let X denote the flow in cfs in the river. Flood conditions
occur when flow is 5000 cfs or above. To compute the percentage of
time flood conditions occur for this river, we have to find,
P(X≥5000)=1-P(Z<a). What is the value...
2. The hardness of some cement samples can be modeled by a normal distribution with an...
2. The hardness of some cement samples can be modeled by a normal distribution with an average of 6,000 kg / cm2 and a standard deviation of 1000 kg / cm2.
a) What is the probability that the hardness of the sample is less than 6.250 kg / cm2?
b) What is the probability that the hardness of the sample is between 5,800 and 5,900 kg / cm2?
c) Which value is exceeded by 90% of the hardness?
d) Among...
The monthly returns for a financial advisory service can be modeled by a Normal distribution with...
The monthly returns for a financial advisory service can be
modeled by a Normal distribution with a mean of $145 and standard
deviation of $79, per $10,000 invested. Find the following
boundaries: (use 5 decimals for all answers) PLEASE SHOW ALL WORK
AND CALCULATIONS PLEASE AND THANK YOU
1. the highest 20% of monthly returns is _____
2. the lowest 20% of monthly returns is ______
3. the highest 10% of monthly returns is _______
4. the middle 20% of...
7. This scenario can be modeled as a (a) normal experiment with 4 trials and success...
7. This scenario can be modeled as a
(a) normal experiment with 4 trials and success probability of
1/6 per trial.
(b) normal experiment with 6 trials and success probability of
1/4 per trial.
(c) binomial experiment with 6 trials and success probability of
1/5 per trial.
(d) binomial experiment with 4 trials and success probability of
1/6 per trial.
(e) binomial experiment with 6 trials and success probability of
1/4 per trial.
8. Complete the following table that represents...
The monthly returns for a financial advisory service can be modeled by a Normal distribution with...
The monthly returns for a financial advisory service can be
modeled by a Normal distribution with a mean of $119 and standard
deviation of $91, per $10,000 invested. Find the following
boundaries: (use 4 decimals for all answers)
(a) the highest 10% of monthly returns:_______
(b) the lowest 10% of monthly returns: _______
(c) the highest 20% of monthly returns: _________
(d) the middle 60% of monthly returns: _______ and________ (Enter
the lower value first.)
Grades on an english test can be modeled as a normal distribution with mean 80 and...
Grades on an english test can be modeled as a normal
distribution with mean 80 and standard deviation 5.
A) if the english department is awarding students with test
grades in the top 5%, find the lowest grade a student needs to
receive the award.
B) A student is randomly selected from the class so the
distribution of this student's test grade is N(80,5), what is the
probability that this student scored above a 90?
C) What is the probability...
Listed below are binary systems for VLE. Which can be approximately modeled using Raoult’s Law? Clearly...
Listed below are binary systems for VLE. Which can be
approximately modeled using Raoult’s Law? Clearly state your
reasons for or against the use of Raoult’s Law. Table B.1 (Appendix
B) may be useful. (a) Argon/hexane at 200K. (b) o-Xylene/p-Xylene
at 413K. (c) n-butane/i-butane at 30 bar. (d) CO2/water at 1
bar.
What are the major source of emissions in power plant and how can we reduce it?
What are the major source of emissions in power plant and how
can we reduce it?
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