A distribution of values is normal with a mean of 114.8 and a
standard deviation of...
A distribution of values is normal with a mean of 114.8 and a
standard deviation of 98.5. Find the probability that a randomly
selected value is between 16.3 and 26.2
A distribution of values is normal with a mean of 190 and a
standard deviation of 15.
From this distribution, you are drawing samples of size
35. Find the interval containing the middle-most 82% of sample
means:
Enter your answer using interval notation. In this
context, either inclusive or exclusive intervals would be
acceptable. Your numbers should be accurate to 1 decimal places.
Answers obtained using exact z-scores or z-scores rounded to 3
decimal places are accepted.
A distribution of values is normal with a mean of 80 and a
standard deviation of 18. From this distribution, you are drawing
samples of size 12.
Find the interval containing the middle-most 88% of sample
means:
Enter your answer using interval notation. In this
context, either inclusive or exclusive intervals would be
acceptable. Your numbers should be accurate to 1 decimal places.
Answers obtained using exact z-scores or z-scores
rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 60 and a
standard deviation of 28. From this distribution, you are drawing
samples of size 22. Find the interval containing the middle-most
60% of sample means: Enter your answer using interval notation. In
this context, either inclusive or exclusive intervals would be
acceptable. Your numbers should be accurate to 1 decimal places.
Answers obtained using exact z-scores or z-scores rounded to 3
decimal places are accepted.
A distribution of values is normal with a mean of 80 and a
standard deviation of 18. From this distribution, you are drawing
samples of size 13. Find the interval containing the middle-most
32% of sample means: Incorrect Enter your answer using interval
notation. In this context, either inclusive or exclusive intervals
would be acceptable. Your numbers should be accurate to 1 decimal
places. Answers obtained using exact z-scores or z-scores rounded
to 3 decimal places are accepted.
1.)
A distribution of values is normal with a mean of 200 and a
standard deviation of 27. From this distribution, you are drawing
samples of size 30.
Find the interval containing the middle-most 54% of sample
means:
Enter your answer using interval notation. In this
context, either inclusive [] or exclusive () intervals are
acceptable. Your numbers should be accurate to 1 decimal
places.
2.)
A fitness company is building a 20-story high-rise. Architects
building the high-rise know that...
A population of values has a normal distribution with mean of
165.7 and standard deviation of 60.2.
a) Get the z-score for a value of 163. For this problem you use
the z score formula z=x−μσz=x-μσ
b) This z-score tells you how many the score of 163
is above or below the population mean μμ .
c) Find the probability that a randomly selected value is
greater than 163.
Part 2
A population of values has a normal distribution with mean...
What is the standard deviation of the standard normal
distribution?
What is the mean of the standard normal distribution?
All symmetric distributions are normal distributions. True or
false?
Assume body temperature scores are normally distributed in the
population with a mean of 36.81°C and a standard deviation of
0.41°C. A person's body temperature is 37.33°C. Calculate their
z-score. (Round answer to 2 decimal places)
Calculate the z-score for a person who has a body temperature of
35.72°C. (Round answer to...
Consider the standard normal distribution with mean = 0, and
standard deviation = 1
a. What is the probability that an outcome z is greater than
2.20? b. What is the probability that z is less than 1.1? c. What
is the probability that z is between -1.03 and 0.84? d. What value
of z cuts off the upper 23% of the standard normal distribution? e.
What value of z cuts off the lower 18% of the standard...
Use Excel to generate 70 values from Normal distribution with
mean 18 and standard deviation 5. Construct a histogram for them
[Note: first generate 100 uniformly distributed random values from
[0,1]; then use them as the first input for NORMINV( ) function,
two other inputs are mean and standard deviation of given Normal
distribution]
Given a standardized a normal distribution (with a mean of 0 and a standard deviation of 1, as in Table E.2), what is that probability that a. Z is less than 1.57? b. Z is greater than 1.84? c. Z is between 1.57 and 1.84? d. Z is less than 1.57 or greater than 1.84?