Question
In: Statistics and Probability
The certificate in Computers has a duration which approximates a normal distribution with a mean of...
The certificate in Computers has a duration which approximates a normal distribution with a mean of 266 months and a standard deviation of 16 months. What is the probability that the certificate last between 240 and 270 days? *
Solutions
Expert Solution
µ = 266
= P(-1.625 < Z < 0.25)
= P(Z < 0.25) - P(Z < -1.625)
= 0.5987 - 0.0521
= 0.5466
orchestra answered 1 year agoRelated Solutions
The weight of freshly born babies approximates a normal distribution. The average weight of all babies...
The weight of freshly born babies approximates a normal
distribution. The average weight of all babies born is 7.5 lbs
(pounds), with a standard deviation of 2.5 lbs.
What proportion of babies will be lighter than 12.1 lbs?
The weight of freshly born babies approximates a normal distribution. The average weight of all babies...
The weight of freshly born babies approximates a normal
distribution. The average weight of all babies born is 7.5 lbs
(pounds), with a standard deviation of 2.5 lbs.
What proportion of babies will be between 6.5 lbs and 11.5
lbs?
which of the following is not a characteristic of the normal probability distribution? the mean is...
which of the following is not a characteristic of the normal
probability distribution?
the mean is equal to the median, which is also equal to the
mode
the total area under the curve is always equal to 1
the mean is 0 and thr Standard deviation is 1
the distribution is symmetrical
Which of the following is NOT a characteristic of the normal probability distribution? The mean, median,...
Which of the following is NOT a characteristic of the normal
probability distribution?
The mean, median, and mode are equal.
It is asymptotic, meaning the curve approaches, but never
touches, the x-axis.
It is symmetrical and bell-shaped.
It is completely described by its minimum value, a, and
its maximum value, b.
Which of the following is NOT a characteristic of the normal probability distribution? The mean, median,...
Which of the following is NOT a characteristic of the normal
probability distribution?
The mean, median, and mode are equal.
It is asymptotic, meaning the curve approaches, but never
touches, the x-axis.
It is symmetrical and bell-shaped.
It is completely described by its minimum value, a, and
its maximum value, b.
Which normal distribution has a wider spread: the one with mean 4 and standard deviation 9...
Which normal distribution has a wider spread: the one with mean
4 and standard deviation 9 or the one with mean 9 and standard
deviation 4?
A population parameter has a normal distribution and has a mean of 45 and variance of...
A population parameter has a normal distribution and has a mean
of 45 and variance of 15. From
this population a sample is selected with a size of 19 and the
variance of the sample is 17. Does
this sample support the population variance? Evaluate.
A population has a normal distribution with a mean of 51.4 and a standard deviation of...
A population has a normal distribution with a mean of 51.4 and a
standard deviation of 8.4. Assuming n/N is less than or equal to
0.05, the probability, rounded to four decimal places, that the
sample mean of a sample size of 18 elements selected from this
population will be more than 51.15 is?
Question: A set of data has a normal distribution with a mean of 53 and a...
Question: A set of data has a normal distribution with a mean of
53 and a standard deviation of 6. Find the...
A set of data has a normal distribution with a mean of 53 and a
standard deviation of 6. Find the percent of data within each
interval...
a. from 47 to 65
b. from 41 to 47
c. greater than 59
d. less than 65
Please show all steps.
Note: a - d are NOT potential answers, they...
A population has a normal distribution with a mean of 51.5 and a standard deviation of...
A population has a normal distribution with a mean of 51.5 and a
standard deviation of 9.6. Assuming , the probability, rounded to
four decimal places, that the sample mean of a sample of size 23
elements selected from this populations will be more than 51.15
is:
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- 1.Sweet Company’s outstanding stock consists of 2,000 shares of cumulative 4% preferred stock with a $100...
- Apply human rights, legal rights and moral rights to the Tennessee v. Garner case, discussing the...
- Do you have a wireless network at home? What kind of wireless equipment do you have?...
- 1) A gas mixture containing 75% air, 20% of A and 5% of B (by volume)...
- What is the difference between a physical and a semantic barrier to communication? Provide an example...
- Draw an EER that models the given requirements. Consider modeling a bank: The bank keeps personal...
- To what extent will built-to-change design principles apply to organizations in other industries with different environments?...
ADVERTISEMENT