The average salary of merchandisers is $41,000 per year with a
standard deviation of $7000.
...
The average salary of merchandisers is $41,000 per year with a
standard deviation of $7000.
a. What is the probability that a merchandiser earns more than
$59,000 per year? (Round z-score computation to 2 decimal places
and the final answer to 4 decimal places.)
Probability
b. What is the probability that a merchandiser earns less than
$22,000 per year? (Round z-score computation to 2 decimal places
and the final answer to 4 decimal places.)
Probability
c. What is the probability that a merchandiser earns between
$33,000 and $49,000 per year? (Round z-score computation to 2
decimal places and the final answer to 4 decimal places.)
Probability
d. What is the probability that a merchandiser will earn
between $28,000 and $54,000 per year? (Round z-score computation to
2 decimal places and the final answer to 4 decimal places.)
Probability
e. What is the average salary below which 20% of the
merchandisers earn? (Round the final answer to the nearest whole
number.)
Salary $
f. What is the average salary above which the top 6% of the
merchandisers earn? (Round the final answer to the nearest whole
number.)
Salary $
Solutions
Expert Solution
Given :
The average salary of merchandisers is $41,000 per year with a
standard deviation of $7000.
The average salary of merchandisers is $54,000 per year with a
standard deviation of $6000. a. What is the probability that a
merchandiser earns more than $66,000 per year? (Round z-score
computation to 2 decimal places and the final answer to 4 decimal
places.) Probability 0.5228 b. What is the probability that a
merchandiser earns less than $42,000 per year? (Round z-score
computation to 2 decimal places and the final answer to 4 decimal
places.) Probability 0.5228 c. What is...
Professors at a local university earn an average salary of
$80,000 with a standard deviation of $6,000. The salary
distribution is approximately bell-shaped. What can be said about
the percentage of salaries that are less than $68,000 or more than
$92,000?
a. It is about 5%.
b. It is about 32%.
c. It is about 68%.
d. It is about 95%.
the average amount of rain per year in Greenville is 49 inches.
the standard deviation is 8 inches. Find the probability and graph
that next year Greenville will receive less than 46 inches and more
than 54 inches of rain. Assume the variable is normally
distributed.
The average teacher's salary in X-city is $37,230. Assume a
normally distribution with standard deviation of the population of
$5,100. For a sample of 75 teachers, what is the probability that
the sample mean is less than $38,000? 0.1245 0.0934 0.4782
0.9066
Suppose the average American eats about 31 pounds of cheese per
year with a standard deviation of 7.75 pounds. Find the probability
that a sample of 32 Americans will eat between 28 and 35 pounds of
cheese. Include a sketch.
The average rent in a city is $1500 per month with a
standard deviation of $250. Assume rent follows the normal
distribution. Use the empirical rule to answer the following
questions.
a. what percentage of rents are between 1250 and
1750?
b. what percentage of rents are less than 1250?
c. what percentage of rents are greater than 2000?
The average rent in a city is $1,440 per month with a standard
deviation of $340. Assume rent follows the normal distribution. a.
What percentage of rents are between $760 and $2,120? What
percentage of rents are less than $760? c. What percentage of rents
are greater than $2,460?
The average rent in a city is $1,440 per month with a standard
deviation of $340. Assume rent follows the normal distribution. a.
What percentage of rents are between $760 and $2,120? What
percentage of rents are less than $760? c. What percentage of rents
are greater than $2,460?
A population of 40 year-old females has a mean salary of $39,321
with a standard deviation of $2,120. If a sample of 100 women is
taken:
a) What is the probability their mean salaries will be less than
$39,000?
b) What is the probability their mean salaries will be between
$38000 and $39,000?
The average clothes washer uses 15 gallons of water per load,
with a standard deviation of 3.0 gallons. What is the probability
that a random sample of 30 loads will provide a sample mean within
one half gallon of the population mean?