Suppose that we have a random sample of 8 students with final exam scores: 43, 55, 96, 33, 37, 78, 62 and 20. Find the point estimate of the population proportion by taking into account the values higher than 60

Q: A researcher decided to gather data from all 150 employees in a certain office instead of just…

A: A certain office has 150 employees. All of them are selected by a researcher to gather data from.

Q: The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to…

A: Solution

Q: A sample of size 80 which found to contain 21 smokers. What is the sample proportion of non-smokers…

A: A population is the complete set of elements for which the study or experiment is conducted. A…

Q: Suppose that 40% of all people in a certain population have brown hair. If a random sample of 100…

A:

Q: Hello, How do you set up and solve? Thank You!

A: Variance of the sampling distribution of the proportions:Consider p-hat as the sample proportion and…

Q: Suppose a researcher wants to estimate the population proportion of defective light bulbs. He took a…

A:

Q: When I am taking a Simple Random Sample, what do I do if say I take 23 samples from a range of 93…

A: The random number table is used to obtain the sample random sample which provides each member of the…

Q: Suppose multiple samples of size n  are drawn from a population with a probability of success equal…

A: Defined : probability of success equal to 57% p=0.57

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

Q: A researcher is studying changes in the student body at her university and has selected a random…

A: (a) (b) (c)

Q: If all possible random samples of size =45 are selected from a population with μ=69 and a σ=6, and…

A:

Q: A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. How large a…

A: Given,          Sample proportion  P∧=0.09          Margin of Error∈=0.04          and…

Q: Suppose that you draw a random sample from a population where you know the population mean is 36 and…

A:

Q: A study shows that 93% of people prefer milk chocolate over dark chocolate. How large of a random…

A:

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: Givenconfidence level = 90%Margin of error(E)=2%=0.02p^=0.45

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: What is the probability of getting a sample mean between 500 and 520 if the population mean is 500…

A: The population mean is 500 and the standard error of the mean is 20.The probability of getting a…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Given Margin of error=0.04 (a) she uses the estimates of 21.8​% male and 18.1​% female from a…

Q: Suppose a certain Statistics instructor wants to estimate the proportion of students who enjoy…

A: Given datamargin of error=0.03

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: given data   CI = 0.90, P ( - Z< P < Z ) = 0.90 therefore z = 1.645 ( =z table ) E = 6% =…

Q: A recent survey found out that 52% of girls 14-17 years old wear contacts. We take a random sample…

A:

Q: Since the sample size is always smaller than the size of the population, the sample mean O A. can be…

A: Correct answer is (A)

Q: Suppose that we will randomly select a sample of n= 94 elements from a population and that we will…

A: From the given information, n=94 and p=0.8 n(1-p)=941-0.8              =18.8

Q: Suppose that we have a random sample of 8 students with final exam scores: 43, 55, 96, 33, 37, 78,…

A: Given  Sample size = 8 Sample data  43 55 96 33 37 78 62 20

Q: Suppose 50% of all voters in a population support a politican, SHARE What is the zscore of sample…

A:

Q: Suppose a clothing store wants to determine the current percentage of customers who are over the age…

A:

Q: Suppose 35% of students intend to major in the health sciences. What is the minimum sample size…

A: Consider that p is proportion of all students intend to major in the health sciences.

Q: a pollster wishes to estimate the number of left-handed scientists. How large a sample is needed in…

A: Given P=0.09 E=0.06 Z(0.01)=2.33

Q: Suppose multiple samples of size nn are drawn from a population with a mean of 50. The mean is…

A: Population mean =50

Q: Assume that 26% of students at a university wear glasses. Suppose 300 students are randomly…

A: It is given that Sample size n = 300 Population proportion p = 0.26

Q: A doctor believes that 80% of all patients having a particular disease will be fully recovered…

A: From the provided information, A doctor believes that 80% of all patients having a particular…

Q: Find the interval containing the middle-most 34% of sample means:

A: Let X denote the distribution of values and x¯ be the sample means of the samples of size n=15.…

Q: Suppose in a random sample of 152 individuals, 25 are considered success. Compute the sample…

A: Given data suppose in a random sample of 152 individuals  25 are considered success

Q: What is the point estimate of the true proportion of people in the population who are over 6 feet…

A: Given that, Sample of 50 peoples is to be drawn and out of which 14 are possessing  characteristic…

Q: A researcher selects all of the possible samples with n = 8 scores from a population and computes…

A: The mean of the sampling distribution of the sample mean is an unbiased estimator for population…

Q: The CEO of an airline estimates that 15% of all flights arrive late. How many flights must he…

A: Given Information: Proportion p=0.15 Confidence level = 96% = 0.96 Significance level α=1-0.96=0.04…

Q: In a random sample for 56 professional actors, it was found that 46 were extrovert.let p represent…

A: Given that in a random sample for 56 professional actors, it was found that 46 were extrovert. i.e.…

Q: A government agency computed the proportion of U.S. residents who lived in each of four geographic…

A: Claim : The proportions of people living in the various regions changed between the current year and…

Q: A pollster wishes to estimate the number of left-handed scientists. How large a sample is needed in…

A: From the provided information, Study indicates that proportion of left-handed scientists is 9% that…

Q: What proportion of the distribution of sample means is between a z  of 1.34 and z of -1.00?

A: P(1.34<z<-1.00)=?

Q: rcher asked a random sample of students at the library on a Friday night, “How many hours a week do…

A: If the selected sample or data for analysis is selected in such a way that randomization is not…

Q: The reason why samples are selected at random is

A: We know that  Random sampling :  Selecting a sample randomly from the population . By selecting…

Q: Suppose in a random sample of 61 individuals, 28 are considered success. Compute the sample…

A: Given x=28 n=61

Q: From a population of 300 you are going to select 50. Using the systematic sampling technique where 5…

A:

Q: Suppose an advertising company wants to determine the current percentage of customers who read print…

A: Given dataError = 5% = 0.05Confidence level = 0.98Significance level = α=1-0.98=0.02

Q: Assume that blood pressure readings are normally distributed with μ= 124 and σ= 9. A researcher…

A: Given that  Blood pressure readings are normally distributed with Mean (μ) = 124 Standard deviation…

Q: Fifty people are selected randomly from a certain population and it is found that 12 people in the…

A: Sample size = n = 50 Sample number of events = x = 12 Sample proportion = p̂ = x/n = (12/50) =…

Q: Suppose in a random sample of 81 individuals, 35 are considered success. Compute the sample…

A: Given x=35 n=81

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.