The drive distance (in yards) for professional golfers is normally distributed with a mean of 318.36 yards and a standard deviation of 10.435 yards.
In: Statistics and Probability
The weights of a certain dog breed are approximately normally
distributed with a mean of 50 pounds, and a standard deviation of 6
pounds. Use your graphing calculator to answer the following
questions. Write your answers in percent form. Round your
answers to the nearest tenth of a percent.
a) Find the percentage of dogs of this breed that weigh less than
50 pounds. %
b) Find the percentage of dogs of this breed that weigh less than
48 pounds. %
c) Find the percentage of dogs of this breed that weigh more than
48 pounds. %
In: Statistics and Probability
At Crenshaw Company, materials are entered at the beginning of each process. Work in process inventories, with the percentage of work done on conversion, and production data for its Painting Department in selected months are as follows: Beginning Work In Process Ending Work in Process Month Units Percentage Completed Units Completed and Transferred Out Units Percentage Completed July 0 - 11,000 1,500 90% Sept. 2,500 20% 9,000 5,000 70% Compute the physical units for July Compute the equivalent units of production for materials and conversion costs for September.
In: Accounting
The weight of an organ in adult males has a bell shaped distribution with a mean of 300 grams and a standard deviation of 20 grams. Use the empirical rule to determine the following:
a) About 99.7% of organs will be between what 2 weights?
b) What percentage of organs weigh between 260 grams and 340 grams?
c) What percentage of organs weigh less than 260 grams and more than 340 grams?
d) What percentage of organs weigh between 260 grams and 360 grams?
In: Statistics and Probability
he weight of an organ in adult males has a bell-shaped distribution with a mean of
320
grams and a standard deviation of
30
grams. Use the empirical rule to determine the following.
(a) About
68%
of organs will be between what weights?
(b) What percentage of organs weighs between
230
grams and
410
grams?
(c) What percentage of organs weighs less than
230
grams or more than
410
grams?
(d) What percentage of organs weighs between
260
grams and
350
grams?
In: Statistics and Probability
The drive distance (in yards) for professional golfers is
normally distributed with a mean of 277.21 yards and a standard
deviation of 5.879 yards.
a. Between what two values would we expect 95% of Bubba Watson's
drive distances to fall?
between_____________and__________ yards
b. What percentage of golfers has a drive distance between 280 and
305 yards?
z1 =______________
z2 =______________
percentage = _________________ % (make sure to change your decimal
to a percentage!)
c. The top 14% of golfers have drive distances of what
length?
z = __________
distance = ________ yards
In: Statistics and Probability
Given the scores on a certain exam are normally distributed with a mean of 75 and a standard deviation of 5
a. Calculate the z-score for 80. Find the percentage of students
with scores above 80
b. Calculate the z-score for 60. Find the percentage of students
with scores below 60.
c. Calculate the z-scores for 70 and 90. Find the percentage of
students with scores between 70 and 90.
d. What is the median?
e. What test score value has a Z-score of -2.25?
f. What test score is the 85th percentile?
In: Statistics and Probability
Use the following information to answer the next 3 questions. Parents of children with developmental disorders can apply for federal funding, to help pay for psychosocial rehabilitation. A sociologist working for the annual Current Population Survey wants to know the percentage of applicants for this funding who are in poverty. She needs a sample of applicants from across the U.S., so she groups all of the applications by state and randomly selects applicants from each state. She calculates the percentage of applicants in her sample that are in poverty. Is this percentage a parameter or a statistic, and why?
In: Statistics and Probability
PROBLEM 3
The average grade point average (GPA) of undergraduate students in New York is normally distributed with a population mean of 2.8 and a population standard deviation of 0.75
(I) The percentage of students with GPA's between 2 and 2.5 is
CHOICE =
(II) The percentage of students with GPA's above 3.0 is:
PERCENTAGE =
(III) Above what GPA will the top 5% of the students be (i.e.,
compute the 95th percentile):
GPA =
(IV) If a sample of 25 students is taken, what is the probability
that the sample mean GPA will be between 2.8 and 2.75?
CHOICE =
In: Math
he weight of an organ in adult males has a bell-shaped distribution with a mean of 320 grams and a standard deviation of 45 grams. Use the empirical rule to determine the following.
(a) About 99.7% of organs will be between what weights?
(b) What percentage of organs weighs between 230 grams and 410 grams?
(c) What percentage of organs weighs less than 230 grams or more than 410 grams?
(d) What percentage of organs weighs between 275 grams and 455 grams?
In: Math