A point estimate is the value from a sample that best approximates the parameter of interest. For instance, suppose you wanted to know the likelihood of getting heads with a coin flip. You flip a coin 80 times and get 44 heads. The point estimate would be 44/80. a) Suppose you want to find the average weight of an adult emperor penguin. The weight of five penguins are 46, 52, 49, 50, and 54 pounds. What is the point estimate for the average weight? pounds b) Suppose you want to find the proportion of students that are left handed? You notice that your class has 32 students, 4 of who are left handed. What is the point estimate for the proportion of left-handed students?

Q: Do men score lower on average compared to women on their statistics finals? Final exam scores of…

A: There are two independent samples which are Male and Female. Both samples come from population which…

Q: Last year, nine employees of a shipping company retired. Their ages at retirement are listed below.…

A: I hope this is helpful.

Q: What Happens in Vegas … Listed below are prices in dollars for one night at different hotels located…

A:

Q: If a population has a mean of 25, what is the mean of the sampling distribution of its mean. Please…

A: Given,population mean(μ)=25

Q: A population consists of all the weights of all defensive tackles on a university's football team.…

A: Given data is  Johnson 204 pounds Patrick 215 pounds Junior 207 pounds kendron 212 pounds…

Q: Q2. Define population in terms of statistics and describe why are samples needed and how are they…

A: It is asked to define the population in terms of statistics and to describe why samples needed and…

Q: The average weight of a lion is 410 pounds. A mammalogist wants to see if the average will be…

A:

Q: coronary bypass surgery: the agency for Healthcare research and quality reported that 53% of people…

A: As Prof. N. G. Das said "Let there are n trials and each having two outcomes - Success and Failure.…

Q: A survey of 2390 musicians showed that 398 of them are left-handed. Find a point estimate for p, the…

A: We have find population left handed..

Q: ompanying data are lengths​ (inches) of bears. Find P5.  35.5, 37.5, 39.5, 39.5, 41.5 ,43.0, 43.5,…

A: Given: The data given is as below 35.5 37.5 39.5 39.5 41.5 43 43.5 45.5 46…

Q: A survey among Harvard students was conducted. It is about their starting position when they sleep…

A: Do the collected data represent a sample or population? Explain your answer.

Q: Describe a scenario explaining how to find the mean of a sampling distribution and how to calculate…

A: Solution-: Describe a scenario explaining how to find the mean of a sampling distribution and how to…

Q: class contains 8 students. Find the number of ordered sample of size 3 with replacemen

A: Since , the class contains 8 students. Our aim is to find the number of ordered sample of size 3…

Q: Take a random sample of 50 pages from a book and estimate the proportion of all pages that contain…

A: Here we want to find proportion of pages that contain figures.

Q: A circus operator randomly picked 5 day from the month of august to see how many people purchased…

A: Sample is the items randomly drawn from the population.

Q: teacher

A:

Q: a. What value should we expect for our sample proportion?

A: Let p be the population proportion of high school seniors who have a driver's license.Given that,

Q: Approximately 10% of all people are left handed. Consider a group of fifteen people. Find the mean.

A: Given data, p=10% =0.10 n=15 Mean=?

Q: Dr. Salim is a dentist. Identify the the average number of cavities that his patients have from the…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: d. The degrees of freedom = e. The test-statistic for this data = (Please show your answer to three…

A: d. Degrees of freedom: df=number of categories-1   =4-1   =3

Q: An undergraduate advisor thinks that 12% of all students who took a particular Intro Stats course…

A: From the provided information, An undergraduate advisor thinks that 12% of all students who took a…

Q: estimate the sample size for a population of 750 people.

A: To estimate the sample size the required calculation can be defined by the formula  Slovin's…

Q: i need 20 to be 30 for the sample section

A: The mean is 1.8 and the standard deviation is 0.5.

Q: A company wants to determine the frequency of the occurrence of invoice error. Suppose that in a…

A:

Q: According to a recent​ study, 80% of adults say they play games on their smartphone. Suppose we…

A: The provided data is, p = 0.80 n = 200 The mean and standard deviation of the population proportion…

Q: In a sample of 81 elements, the mean was 60 and the variance was 144. What is the standard error for…

A:

Q: 1. How are the collection of all sample proportions of samples of size 172 distributed? NO 2. What…

A: Given Information: Sample size (n) = 172 studentsPopulation Proportion (p) = 0.51. The distribution…

Q: The arm span and foot length were measured (in centimeters) for each of the 19 students in a…

A: The objective is to find out the predicted foot length for a student with an arm span of 160cm.

Q: A tube of listerine tartar control toothpaste 4.2 ounces. As people use the toothpaste the amount…

A:

Q: A company wants to determine the frequency of the occurrence of invoice errors. Suppose that in a…

A:

Q: one small die (6 sided) and one large die (10 sided) is rolled 50 times at the same time. Use the…

A: P(smaller die is odd): Empirical Probability: Possible cases for smaller die is odd:…

Q: If the population consists of numbers 1, 2, 3, 4, 5, 6, and 7, find the mean of the samples of size…

A: The mean of each possible sample can be computed by taking the sum of observations in the sample and…

Q: How many different arrangements can be formed from the word STATISTICS?

A:

Q: ne small die (6 sided) and one large die (10 sided) is rolled 50 times at the same time. Use the…

A: P(smaller die is odd): Empirical Probability: Possible cases for smaller die is odd:…

Q: Q2. Define population in terms of statistics and describe why are samples needed and how are they…

A: A population can be defined as a group of individuals belonging to the same species residing in a…

Q: Find the point estimate of p and 96% CI.

A: Given: X: Number of students responded as Yes = 32 n: Total number of students = 100

Q: The true proportion of voters in favor of a candidate is unknown. A random sample of 329 voters…

A: The point estimate of true population proportion of the voters who favor the candidate would be the…

Q: Risk Ratio  a. Table 1 b. Table 2 2. Odds Ratio a. Table 1 b. Table 2 3. Answer the following…

A: * SOLUTION :-  Given that ,

Q: It is not important to collect samples randomly. True or false

A: Any sample must be collected using the random techniques. If the samples are not collected randomly…

Q: Complete part C. C. Compute an estimate of the population parameter.  Telephone survey of 2980…

A: We have to find estimate of population parameter..

Q: Identify the type of sample ( Experimental or Observational) Then tell if the sample is biased…

A: The researcher stands at a shopping mall and selects the first 75 shoppers as they walk by to fill…

Q: Make your own example of mean and variance of a sampling distribution. Also, construct the sampling…

A: Given that We have to Make own example of mean and variance of a sampling distribution. Also,…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.