Homework Answers
Add Answer to:
The city of Saskatoon recently reported that 10% of homeowners regularly use recycling depots. Let x...
111. A realtor Selya Cribb, has been told tha 42% of homeowners in a city prefer...
111. A realtor Selya Cribb, has been told tha 42% of homeowners in a city prefer to have a basement. he surveys a group of 250 homeowners randomly chosen from her client list. 11. Find the mean of the sampling distribution model of the proportion of homeowners in this sample uho prefer a basement. 13) 0.028 C)105 D) 0001 E) 71 12. Find the standard error of the sampling distribution of the proportion of homeowners in this sample who prefer...
PART 1 Let X represent the average age of people living in Sun City. Assume that...
PART 1 Let X represent the average age of people living in Sun City. Assume that X has a normal probability distribution with μ=72 years and σ=10 years. You intend to measure a random sample of n=51 people. What is the mean of the distribution of sample means? μ¯x= What is the standard deviation of the distribution of sample means (i.e., the standard error in estimating the mean)? (Report answer accurate to 2 decimal places.) σ¯x= PART 2 In a...
In one city, 20% of the population has a college education. Three people are selected at...
In one city, 20% of the population has a college education. Three people are selected at random from the city. Find the probability distribution of X, the number among the three that have a college education. A. Identify then and the p for this distribution. p B. Let the random variable x be the possible number of people selected with a college degree. Develop a binomial distribution by finding P(x) when x = 0, 1, 2, and 3. XP(x) 0...
A councilwoman regularly polls her constituency to gauge her level of support among voters. Her support...
A councilwoman regularly polls her constituency to gauge her level of support among voters. Her support is usually at 50% among his constituents. If a sample of 100 people is selected answer the following questions: What is the mean of sampling distribution for sample proportions? What is the standard error for sample for sample proportions? What is the probability that the councilwoman support falls below 45%?
1. Suppose that 81% of the people in Houston live in the city and 19% of...
1. Suppose that 81% of the people in Houston live in the city and 19% of the people live in the suburbs. If the 21,000 undergraduate students from UH represent a random sample of the population, what is the probability that the number of UH undergraduates are from suburbs will be fewer than 4,000? (Hint: Apply normal approximation to binomial probability via CLT.) 2. Suppose that the body mass index (BMI) measure for adults is normally distributed with mean 21.7...
69% of people living in a certain city are opposed to the use of a guard...
69% of people living in a certain city are opposed to the use of a guard camera. A random sample of 178 people from a population of 15,000 is obtained. The 178 people are asked to think about the use of a watchdog. If p^ the proportion of the sample that says it opposes, what is the mean of the sample distribution of p^? (result to two decimal places)
USA Today reported that about 20% of all people in the United States are illiterate. Suppose...
USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take seven people at random off a city street. (a) Make a histogram showing the probability distribution of the number of illiterate people out of the seven people in the sample (b) Find the mean and standard deviation of this probability distribution. (Round your answers to two decimal places.) μ = people σ = people Find the expected number of people in this sample who...
Suppose that 10% of all people hate their haircut. Let X denote the number of people...
Suppose that 10% of all people hate their haircut. Let X denote the number of people from a sample of 200 that hate their haircut. What is the approximate (hint hint... don't use binomial) probability that a. At most 35 people hate their haircut b. At least 30 hate their haircut c. Between 15 and 25 hate their haircut.
A city reported that 54% of its adult residents have children. A researcher randomly samples 200...
A city reported that 54% of its adult residents have children. A researcher randomly samples 200 adult residents in the city and asks them whether or not they have children. (a) (2 points) How many adults in the sample are expected to have children? (b) (5 points) Verify the sampling distribution of the sample proportion is normal, and deter- mine the mean and standard deviation of the sampling distribution. (c) (3 points) What is the probability that 117 adults or...
Questions 15–17. A newspaper reported that 90% of youths use the Internet. Use this reported number...
Questions 15–17. A newspaper reported that 90% of youths use the Internet. Use this reported number as the population proportion. A random sample of 900 youth is selected. Let p be the sample proportion of youths who use the Internet. 15. The distribution of p is closest to ✓(a) normal with mean 0.9 and standard deviation 0.01 (b) normal with mean 0.9 and standard deviation 0.3 (c) binomial with mean 0.9 and standard deviation 0.01 (d) binomial with mean 0.9...
111. A realtor Selya Cribb, has been told tha 42% of homeowners in a city prefer to have a basement. he surveys a group of 250 homeowners randomly chosen from her client list. 11. Find the mean of the sampling distribution model of the proportion of homeowners in this sample uho prefer a basement. 13) 0.028 C)105 D) 0001 E) 71 12. Find the standard error of the sampling distribution of the proportion of homeowners in this sample who prefer...
In one city, 20% of the population has a college education. Three people are selected at random from the city. Find the probability distribution of X, the number among the three that have a college education. A. Identify then and the p for this distribution. p B. Let the random variable x be the possible number of people selected with a college degree. Develop a binomial distribution by finding P(x) when x = 0, 1, 2, and 3. XP(x) 0...
1. Suppose that 81% of the people in Houston live in the city and 19% of the people live in the suburbs. If the 21,000 undergraduate students from UH represent a random sample of the population, what is the probability that the number of UH undergraduates are from suburbs will be fewer than 4,000? (Hint: Apply normal approximation to binomial probability via CLT.) 2. Suppose that the body mass index (BMI) measure for adults is normally distributed with mean 21.7...
Questions 15–17. A newspaper reported that 90% of youths use the Internet. Use this reported number as the population proportion. A random sample of 900 youth is selected. Let p be the sample proportion of youths who use the Internet. 15. The distribution of p is closest to ✓(a) normal with mean 0.9 and standard deviation 0.01 (b) normal with mean 0.9 and standard deviation 0.3 (c) binomial with mean 0.9 and standard deviation 0.01 (d) binomial with mean 0.9...
Most questions answered within 3 hours.
-
Assume an array list is declared as follows:
int list[100]
and that all other variables have...
asked 17 seconds ago -
Do you believe that as the pool of engineers decrease, or become
in higher demand, that...
asked 8 minutes ago -
A
700 kg car is coasting along a level road, slowing down at an
acceleration of...
asked 17 minutes ago -
find dB IL for a sound with the intensity of 3x10^-13 w/sq meter
with a reference...
asked 17 minutes ago -
Case 7-3: Wentworth Hospital Discussion Questions: essay
paragraph
Is there anything irregular here?
What is your...
asked 20 minutes ago -
1- A) How many milliliters of 0.100 M NaOH are needed to
neutralize 50.00 mL of...
asked 37 minutes ago -
It is determined that a reaction is 1st order in [BrO3-], 1st
order in [Br-] and...
asked 39 minutes ago -
Write a JavaScript program to implement the Least-Squares Linear
Regression algorithm shown below, for an arbitrary...
asked 49 minutes ago -
Determine the solubility of Cadmium in equilibrium with Cadmium
hydroxide, Cd(OH)2, as a function of pH....
asked 53 minutes ago -
When 34.2 grams of strontium reacts with excess molecular
oxygen, how many grams of the product...
asked 1 hour ago -
nformation related to the Berkley Company for the calendar year
2015 follows:
Liabilities, December 31, 2015...
asked 56 minutes ago -
Please help!
A voltaic cell consists of a Mn/Mn2+ anode (E°= -1.18 V) and a
Fe/Fe2+...
asked 1 hour ago