Assume the annual day care cost per child is normally distributed with a mean of $8000...
Assume the annual day care cost per child is normally distributed with a mean of $8000 and a standard deviation of $1500. In a random sample of 120 families that use day care, how many pay between $6500 and $8750 annually for day care per child? Round to the nearest whole number.
Homework Answers
I have answered the question below
Please up vote for the same and thanks!!!
Do reach out in the comments for any queries
Answer:
mean of $8000 and a standard deviation of $1500
n = 120
=> P(6500<Z<8750)
=> Z = X-U/sd
=> P(-1<z<0.5)
=> 0.69146 - 0.15866 = 0.5238
Add Answer to:
Assume the annual day care cost per child is normally
distributed with a mean of $8000...
Assume that scores on a math competition are normally distributed a mean of 12 points and...
Assume that scores on a math competition are normally distributed a mean of 12 points and a standard deviation of 2.5 points. Answer the following questions on these scores How many students scored less than 9 points? Round to the nearest percent. How many students scored at least 17 points? Round to the nearest percent. How many students have a score between 12 and 15 points? Round to the nearest percent. What is the cuttoff score for top 5% students....
Assume the annual salaries of police officers are normally distributed with a mean of $47 000...
Assume the annual salaries of police officers are normally distributed with a mean of $47 000 and a standard deviation of $8000. Determine the percent of police officers with an annual salary of at least $47,000 Click here to view page 1 of the standard normal distribution table.... Click here to view page 2 of the standard normal distribution table.... Determine the percent of police officers with an annual salary of at least $47,000 . (Round to two decimal places...
The IQ scores of college students are normally distributed with the mean of 120 and standard...
The IQ scores of college students are normally distributed with the mean of 120 and standard deviation of 10. If a random sample of 25 students is taken, what is the probability that the mean of this sample will be between 120 and 125. (49.38%)
I. Assume that z is normally distributed with a specified mean and standard deviation. Find the...
I. Assume that z is normally distributed with a specified mean and standard deviation. Find the indicated probabilities: c, p(x 120); μ 100 ; ơ--15 2. Find z such that 28% of the standard normal curve lies to the right of z. 3. A person's blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter of blood. After a 12- hour fast, the random variable x will have a...
Assume that the annual earnings per share (EPS) for a population of firms are normally distributed...
Assume that the annual earnings per share (EPS) for a population of firms are normally distributed with a mean of $6 and a standard deviation of $2. What are the z-values for EPS of $2 and $8?
5. A particular fruit's weights are normally distributed, with a mean of 704 grams and a...
5. A particular fruit's weights are normally distributed, with a mean of 704 grams and a standard deviation of 12 grams. If you pick 12 fruit at random, what is the probability that their mean weight will be between 692 grams and 701 grams (Give answer to 4 decimal places.) 6. A particular fruit's weights are normally distributed, with a mean of 286 grams and a standard deviation of 18 grams. If you pick 25 fruit at random, what is...
4. A manufacturer knows that their items have a normally distributed lifespan, with a mean of...
4. A manufacturer knows that their items have a normally distributed lifespan, with a mean of 14.4 years, and standard deviation of 3.2 years. If you randomly purchase 21 items, what is the probability that their mean life will be longer than 15 years? (Give answer to 4 decimal places.) 5. A particular fruit's weights are normally distributed, with a mean of 704 grams and a standard deviation of 12 grams. If you pick 12 fruit at random, what is...
Assume that the heights of adult puffins are normally distributed, with a mean of μ =...
Assume that the heights of adult puffins are normally distributed, with a mean of μ = μ = 14.2 inches and a standard deviation of σ = σ = 2.8 inches. For a random sample of 67 puffins, answer the following: What is the mean of the distribution of ¯ x ? Correct What is the standard deviation of the distribution of ¯ x?
Assume that the number of hours college students spend working per week is normally distributed with...
Assume that the number of hours college students spend working
per week is normally distributed with a mean of 18 hours and
standard deviation of 4 hours
2. Assume that the number of hours that college students spend working per week is normally distributed with a mean of 18 hours and a standard deviation of 4 hours. a. Mark the 7 hash marks on the x-axis with the appropriate labels in hours worked per week. Recall that the center hash...
Suppose that yearly health care expenses for a family of four are normally distributed with a...
Suppose that yearly health care expenses for a family of four are normally distributed with a mean expense equal to $4,424 and a standard deviation of $646. An insurance company has decided to offer a health insurance premium reduction if a policyholder’s health care expenses do not exceed a specified dollar amount. What dollar amount should be established if the insurance company wants families having the lowest 33 percent of yearly health care expenses to be eligible for the premium...
The IQ scores of college students are normally distributed with the mean of 120 and standard deviation of 10. If a random sample of 25 students is taken, what is the probability that the mean of this sample will be between 120 and 125. (49.38%)
I. Assume that z is normally distributed with a specified mean and standard deviation. Find the indicated probabilities: c, p(x 120); μ 100 ; ơ--15 2. Find z such that 28% of the standard normal curve lies to the right of z. 3. A person's blood glucose level and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter of blood. After a 12- hour fast, the random variable x will have a...
Assume that the number of hours college students spend working
per week is normally distributed with a mean of 18 hours and
standard deviation of 4 hours
2. Assume that the number of hours that college students spend working per week is normally distributed with a mean of 18 hours and a standard deviation of 4 hours. a. Mark the 7 hash marks on the x-axis with the appropriate labels in hours worked per week. Recall that the center hash...
Most questions answered within 3 hours.
-
Given that a sample of aluminium oxide has a Young's modulus of
393 GPa and a...
asked 29 minutes ago -
At a certain temperature, the equilibrium constant, Kc, for this
reaction is 53.3.
H2(g)+I2(g)−⇀↽−2HI(g)Kc=53.3
At this...
asked 1 hour ago -
Question1 ) The STL provides similiar classes called stack and
queue, both of which gave functions...
asked 2 hours ago -
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 2 hours ago -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 4 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 4 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 5 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 5 hours ago -
A space vehicle is coasting at a constant velocity of 18.1 m/s
in the +y direction...
asked 6 hours ago -
5) Use the following balanced equation to answer questions
(a)-(i).
3 Cu(s) + 8 HNO3(aq) →...
asked 6 hours ago -
A three-year maturity bond with a 12% annual coupon rate is
currently traded at par $1000...
asked 6 hours ago -
1.
What is the minimum volume to use in the Spec 20 cuvette in order
to...
asked 7 hours ago