A sample of manufactured items will be selected from a large population in which 8 percent of the items are defective. Of the following, which is the least value for a sample size that will allow for the sampling distribution of the sample proportion to be assumed approximately normal?

Q: Estimate the chance that the sample proportion was more than 45% using a normal approximation.

A: Given information: Given that , 40 % of the primary doctors have made claim that their patients…

Q: In a random sample of 5000 UWC students, 2846 claimed to live in one of the campus’s residences.…

A: Given information- Sample size, n = 5000 We have given that out of 5000 UWC students, 2846 claimed…

Q: Under what conditions can the mean of the sample be treated as a value that is from a population…

A: From the above data  under what conditions can the mean of the sample be treated as a value that is…

Q: A notable indicator of a baby's health is the weight gained in the first year of the baby's life.…

A: Given that Sample size =14 Sample mean =5904   Sample standard deviation =1611  For confidence level…

Q: A recent study shows that out of 5, 000 people who moved to Arizona, 2, 350 did so to take a new…

A: From the given information, sample size n = 1000. Total number of people moved n(S) = 5000. Number…

Q: According to previous studies, the mean distance each visitor in Greenspan National Park hikes…

A:

Q: For a population with a mean of 35 and standard deviation of 7, find the sample mean of size n = 20…

A: The formula to find the sample mean is, x¯=μ+zσn From the Standard Normal Table, the value of z for…

Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A:

Q: The mean and standard deviation of the sampling distribution of the mean is shown as?

A:

Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A: There are two dependent samples which are Spouse 1 and Spouse 2.We have to test whether there is a…

Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A: Consider spouse 1 is the first sample and spouse 2 is the second sample n1 = first sample size = 9…

Q: According to previous studies, the mean distance each visitor in Greenspan National Park hikes…

A: GivenMean(x)=27.6standard deviation(σ)=9.9sample size(n)=46significance level(α)=0.10

Q: You take a sample of size 190 and get 23 successes. Confirm that the sample size was large enough to…

A: Given that Sample size (n) = 190  probability of success (p) = 23/190 = 0.12

Q: In a random sample of 1000 B.Com students, 125 said that they wanted to become Statisticians. Assume…

A:

Q: The scores in a high school are normally distributed with a variance of 225. Suppose that 27.43% of…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

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: The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is m=12.00 Mbps.…

A:

Q: Q2. (Unit 6) Suppose three samples (10, 15, 20) are drawn from the normal distribution. a) What is…

A: Given: Sample distribution as 10, 15, 20 drawn from the normal distribution.To find: a) Point…

Q: The distribution of a sample of 100 test scores is mound-shaped and symmetrical, with a mean of 50…

A: Answer: From the given data, Sample size (n) = 100 Mean (μ) = 50 Variance (σ2) = 144 Standard…

Q: A simple random sample of 100 water meters within a community is monitored to estimate the average…

A: Introduction: It is required to estimate the true mean of daily water consumption.

Q: A random sample of size 16 is to be taken from a normal population having mean 100 and variance 4.…

A: Sample size = 16 Mean = 100 Variance = 4

Q: The owner of a tire company wants to determine how long a new type of tire tread will last by…

A:

Q: In a random sample of 900 B.Admin students, 225 said that they wanted to become Statisticians.…

A: Introduction :-

Q: According to previous studies, the mean distance each visitor in Greenspan National Park hikes…

A:

Q: is computed from a sample and is used to estimate a population parameter.

A: 2. Parameter: The population parameter is the number that describes the population. Also, the…

Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A: Let, x denotes the spouse 1 and y denotes the spouse 2. The data is given as- x y 122 120 104…

Q: The gas mileage for a 2020 Toyota Prius hybrid vehicle is skewed to the left, with μ = 55 miles per…

A:

Q: p1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Ho : Ha =…

A: here test there is a significant difference between the IQs of two group  and it is paired data

Q: andom sample of 40 students and finds that 30% of them have period 4 lunch. Later, he goes to the…

A: Given, In a random sample of 40 students, 30% of them have period 4 lunch. Out of the 380 students…

Q: A quality control engineer at Shell visits 80 gas stations and collects a fuel sample from each. She…

A: Given

Q: A Random Sample Of Size 25 Is To Be Selected From A Normal Population Having A Mean Of 81 And A…

A: Given that Population mean=81 Variance =9

Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A: The data is given as follows:Spouse 1Spouse…

Q: A random sample of size 1,000 is taken from a population where the population proportion p = .02.…

A: From the provided information,n = 1000Population proportion (p) = 0.02

Q: Given that age of ECU students is normally distributed. A random sample of 16 students had an…

A:

Q: A survey of 2255 randomly selected US adults found that 51% said they know all or most o their…

A: Given: n=2255p=0.5190% CI for p=?α=1-0.90=0.10zα2=z0.05=1.645            (z-table)

Q: A psychology graduate student wants to test the claim that there is a significant difference between…

A: Solution

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.