5) You are studying a population of ducks. There are 10 ducks in the population and...
5) You are studying a population of ducks. There are 10 ducks in the population and you are studying how much they weigh in pounds. In this population there are 5 ducks that weigh 5 pounds, and 5 ducks that weigh 4 pounds. You take a sample of 4 ducks of the following weights: 4,4,4,5. If you calculate the sample mean weight of these four ducks, what would be your sampling error?
Homework Answers
Population mean = (4*5+5*5)/10 = 4.5
Sample mean = (4+4+4+5)/4=4.25
Sampling error= Population mean - sample mean = 4.5-4.25=0.5
Add Answer to:
5) You are studying a population of ducks. There are 10 ducks in
the population and...
You are studying a population of ducks. There are 10 ducks in the population and you...
You are studying a population of ducks. There are 10 ducks in the population and you are studying how much they weigh in pounds. In this population there are 5 ducks that weigh 5 pounds, and 5 ducks that weigh 4 pounds. You take a sample of 4 ducks of the following weights: 4,4,4,5. If you calculate the sample mean weight of these four ducks, what would be your sampling error?
Dr. I.C. Trout, a professional ichthyologist, is studying a population of catfish with his assistant, Etta...
Dr. I.C. Trout, a professional ichthyologist, is studying a population of catfish with his assistant, Etta Bass. Trout and Bass have established the mean weight for a catfish is 3.2 pounds, with a standard deviation of 0.8 pounds. Weights of catfish are normally distributed. Solve the following: A. What is the probability that a catfish will weigh more than 4.4 pounds? B. What is the probability that a catfish will weigh between 3 and 5 pounds? C. What is the...
Suppose you take a random sample of 100 different baby weights and found the mean baby...
Suppose you take a random sample of 100 different baby weights and found the mean baby weight to be 7 pounds with a standard deviation of 0.6 pounds. Based on this information, calculate the standard deviation that would be used for a Sampling distribution of baby weight means with sample sizes 100.
1. There is a population of three people: Xerxes, Yasmin, and Zoe. [Note: this is a population, not a sample.] They are...
1. There is a population of three people: Xerxes, Yasmin, and Zoe. [Note: this is a population, not a sample.] They are asked how many books they read last month. Xerxes read 2 books, Yasmin read 4 books, and Zoe read 12 books. We are too lazy to poll the entire population, so we take a sample of two (with replacement and order matters). Please draw the sampling distribution of the mean ofa sample of size two. 2. Continuing with...
The population proportion of success is 5% and the intended sample size is n=220n=220. Before drawing...
The population proportion of success is 5% and the intended sample size is n=220n=220. Before drawing a sample from the population, you first want to describe the expected sampling distribution for the sample proprtion. Give answers in decimal format (as opposed to fractions or percentages). Give the mean for the distribution of sample proportions: μˆp=μp^= Give the standard deviation for the distribution of sample proportions: σˆp=σp^= Classify the shape of the distribution of sample proportions in this context: not normal nearly...
1. There is a population of three people: Xerxes, Yasmin, and Zoe. [Note: this is a population, not a sample.] They...
1. There is a population of three people: Xerxes, Yasmin, and Zoe. [Note: this is a population, not a sample.] They are asked how many books they read last month. Xerxes read 2 books, Yasmin read 4 books, and Zoe read 12 books. We are too lazy to poll the entire population, so we take a sample of two (with replacement and order matters). Please draw the sampling distribution of the mean of a sample of size two. 2. Continuing...
The weight (in pounds) for a population of school-aged children is normally distributed with a mean...
The weight (in pounds) for a population of school-aged children is normally distributed with a mean equal to 133 ± 21 pounds (μ ± σ). Suppose we select a sample of 100 children (n = 100) to test whether children in this population are gaining weight at a 0.05 level of significance. a. What are the null and alternative hypotheses? b. What is the critical value for this test? c. What is the mean of the sampling distribution? d. What...
Case 2: Kellogg Corporation Population mean weight is 360 grams with a standard deviation of 15...
Case 2: Kellogg Corporation Population mean weight is 360 grams with a standard deviation of 15 grams. The quality analyst conducts a random sampling of 16 boxes found to have a sample mean weight of 370 grams. By Sampling 16 boxes, the sample mean weight is 370 grams. A. What is the Sampling error? B. What is the sample standard error of the Sample mean? Quality analyst would like to reduce the sampling error of the sample mean to One...
The sampling distribution of means is: A list of all members of the population you are...
The sampling distribution of means is: A list of all members of the population you are studying. Also called the standard error of the mean. A set of numbers representing all of the possible sample means on a variable you could draw from a given population and a given sample size. A list of all members of the sample that you draw. 1 points Question 2 The standard deviation of the sampling distribution of means is called the: Margin of...
If possible could you show me how to do this in excel? Weights of a population...
If possible could you show me how to do this in excel? Weights of a population have a mean (µ) of 180 pounds and standard deviation (σ) of 15 pounds. If random samples of size n = 5 are selected from this population, what percentage of the sample means would you expect to be (or “What is the probability that any sample mean (x-bar) is”) 1. (6 points)Between 179 and 181 pounds? 2. (6 points)Less than 177 pounds?
1. There is a population of three people: Xerxes, Yasmin, and Zoe. [Note: this is a population, not a sample.] They are asked how many books they read last month. Xerxes read 2 books, Yasmin read 4 books, and Zoe read 12 books. We are too lazy to poll the entire population, so we take a sample of two (with replacement and order matters). Please draw the sampling distribution of the mean ofa sample of size two. 2. Continuing with...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago