For which of the following conditions is it not appropriate to assume that the sampling distribution of sample mean is approximately normal? A A random sample of 8 taken from a normally distributed population A random sample of 50 taken from a normally distributed population A random sample of 10 taken from a population distribution that is skewed to the right

Q: Suppose that a variable of a population has a reverse-J-shaped distribution and that two simple…

A: Given variable of a population has a reverse J- shaped distribution. Any sample distribution will be…

Q: Suppose that we take a random sample of size n from a population having a mean (m) and standard…

A: From the provided information, 1) Population mean (m) = 500 Population standard deviation (s) = 0.5…

Q: A study was done on body temperatures of men and women. The results are shown in the table. Assume…

A: Given information- 1- Denotes men body temperature. 2 – Denotes Women body temperature. We have to…

Q: ?Which of the following statements is correct X-Y-Do T = A O the pooled-variances t-test: is used…

A:

Q: Test the claim that the two samples described below come from populations with the same mean. Assume…

A: The given data are:Sample sizeMeanStandard deviationSample 1Sample 2

Q: Which of the following is TRUE about the variance of the sampling distribution of sample means? It…

A:

Q: Which of the following statements about the sampling distribution of the sample mean, a, is not…

A: Here we have given multiple choice question about the central limit theorem. Which of the following…

Q: Which of the following is true for most normal distributions? a) Around 70% of the scores will be…

A: Standard Normal Distribution Graph:

Q: Which of the following distributions of the sample mean would NOT be normally distributed…

A: We know that,          The central limit theorem(CLT) states that if you have a population with…

Q: A positive value of z indicates that the number of standard deviations of an observation is to the…

A: Objective of this question is that which option is the correct choice.

Q: Which of the following statements are correct when deciding whether to use the z or the t…

A: The t – distribution and z distribution both were used to test the significant mean difference…

Q: For which of the following conditions is it not appropriate to assume that the sampling distribution…

A: As per CLT,Sampling distribution will be approximately normal if n ≥ 30 orpopulation distribution…

Q: Consider that X1, X2, X3, X4, X5 is an independent random sample where Xi follows a normal…

A:

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

A:

Q: Which of the following statements about a negatively skewed distribution is true? O The distribution…

A:

Q: Assume that the two samples are independent simple random samples selected from normally distributed…

A: The given data is, Collage A Collage B 3.7 3.8 3.2 3.2 3 3 2.5 3.9 2.7 3.8 3.6 2.5…

Q: In testing a hypothesis about two population means, it the t distribution is used, which of the…

A:

Q: Which of the following distributions of the sample mean would NOT be normally distributed…

A: I want to tell you which one is the correct choice.

Q: An inferential Z score test is used to test if there is a significant difference between the…

A: We use Z test if population variance are known.

Q: The mean of all the sample means obtained from all random samples of a certain sample size in a…

A: Here, we have sample mean is an biased estimate of the given random sample.

Q: sample of 100 observations was taken from a large population. The sample mean and the variance was…

A: Solution: Given information: n= 100  Sample size x=80  Sample mean s2=144 Sample variance s=s2s=…

Q: Mrs. Santos administered a Science Achievement Test to a random 45 graduating SHS students. In this…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: When a random sample of size 400 is selected then the standard error of the sample mean will be 0.5.…

A: GivenIf  n = 400then 5.E = 0.5If  n = 100    5.E = ?

Q: Q:10 Which of the following is a true statement? (A) If the mean and median of a set are equal, then…

A: Any sample represents the population from which it is taken. Sample distribution estimates the…

Q: For the distribution of sample means to be normally shaped, it must be derived from samples of at…

A: We have given that the distribution of the sample means to be normally shaped, it may be derived…

Q: The table below shows random samples for two different statistical materials. Random Sample A 2 4…

A: Sample A: Mean is 13 The range is calculated below.

Q: We want to estimate the mean of a certain population, so we will collect a sample. Which should be…

A: Solution. If the large sample is taken from any population the distribution of the sample mean will…

Q: s Consider A random sample of 150 in size is taken from a population with a mean of 1640 and…

A:

Q: PWhich of the following is not one of the assumptions made in the analysis of variance The…

A: The assumptions of the analysis of variance are: Each sample is an independent random sample.

Q: Which of the following is true regarding the sampling distribution of the mean for a large sample…

A:

Q: Assume that the two samples are independent simple random samples selected from normally distributed…

A: Given that, n1=8 n2=13 x1¯=​3.1125, x2¯=​3.4385, s1=​0.4357 s2=0.5485

Q: Independent random samples of  64 observations each are chosen from two normal populations with the…

A: We have given that,  Population mean (μ1) = 12, population standard deviation σ1 = 4, n1 = 64 and…

Q: Which of the following statements is true with respect to the sampling distribution of a proportion?…

A: The sampling distribution of the proportion is approximately normal with mean p and standard…

Q: Which of the following is not one of the assumptions of the t-test for independent samples? The…

A: Given that  Based on the given data

Q: Suppose a population with a mean of 100 and a variance of 900 was given. The central limit theorem…

A:

Q: Which of the following statements about sampling distributions is/are TRUE? A. The mean of the…

A: Given that  Standard error = ?/√n

Q: The following data shows the scores of five students in Statistics and Physics. What is the…

A: Correlation Coefficient is denoted by r

Q: Which of the following statement is INCORRECT? If Y follows the standard normal distribution and Y,…

A:

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.