he annual salary for a certain job has a normal distribution with a mean of $54, 000 and a standa $5000. Which sample size Would alloA Us to uco the

Q: Suppose a random sample size of 60 is taken from a population with p = 0.51. What is the mean of…

A:

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: The “best estimate” of the mean of a parent distribution, using a data set consisting of N samples,…

A: The given statement is,  The “best estimate” of the mean of a parent distribution, using a data set…

Q: For a negatively skewed distribution with a mode of X = 25 and a median of 20, what is the most…

A: Given information- Mode of X = 25 Median = 20 We have to determine the most likely value for the…

Q: an of sampling distribution of 24.49. Wha

A: Given, μx-=24.49

Q: Find the sample variance of the following data set.  6,12, 11, 11

A: Solution : Given : n= 4 Let, X = 6, 12, 11, 11 Sample variance is calculated by using following…

Q: A certain dataset has the following values: Mean = 40; Median = 30; Mode = 30 What is the shape of…

A: It is an important part of statistics . It is widely used .

Q: If a distribution is normal with μ = 10 and σ = 5, what is the z score of 20?

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: In a normal distribution, 11% of the items are under 35 and 76% are under 83. Find the mean and…

A:

Q: If the population is    , then the proportion values in the Unit Normal Table are accurate.…

A: Solution: Unit normal table gives the values of probability for a standard normal distribution.  The…

Q: was the mean for the original sample? (SHOW YOUR WORK)

A:

Q: hoose the letter of the correct answer. 20. Which of the following data show most likely the…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: The following sample data are from a normal population: 10, 8, 12, 14, 13, 11, 7, 5. a. What is the…

A: Given data is10,8,12,14,13,11,7,5sample size(n)=8

Q: If a distribution is normal with μ = 60 and σ = 15, what is the z score of 40?

A:

Q: The Ohio Bureau of Employment gathered the following sample information on the number of hours…

A:

Q: which value of л would it be safe to assume the sampling distribution of Y is approximately normal?

A: here given ,  n=100

Q: Find the sample variance of the following set of data: 4,12,7,5

A:

Q: 1. Determine the variance of the following 10 sample data: 10,12,9,18, 14,16,14,18,19 and 20

A:

Q: What is the standard "z" value corresponding to the sample mean 90 in a distribution with population…

A: Option C is correct. Given

Q: When the mean is smaller than the median, and the median is smaller than the mode, the distribution…

A:

Q: Give the mean and the standard deviation of the distribution of means for mean=100; Variance=100;…

A:

Q: Is the statement below true or false? The distribution of the sample mean, x, will be normally dist…

A: The distribution of the sample​ mean,  x̄, will be normally distributed if the sample is obtained…

Q: Find the sample variance of the following set of data: 8, 7, 11, 10, 10, 8.

A: Given data, 8, 7, 11, 10, 10, 8.   Sample variance=?

Q: For a positively skewed distribution with a mean = 20, What is the most probable value of the…

A:

Q: What sort of skewness is present in a distribution which has the following characteristic?…

A: It is given that the mean is 50, median is 60 and mode is 70.

Q: For a normal distribution with a mean of μ = 120 and σ = 20 What range of scores would form the…

A: Solution

Q: In a left-skewed distribution, which is greater? O a. median O b. standard deviation O c variance O…

A:

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: For the following distribution -1,0,1, what is the sample variance?

A: Here the sample size is N=3 The mean of the sample is, μ=1N∑i=1NXi=-1+0+13=0

Q: For a negatively skewed distribution, what is the most probable order for the three measures of…

A: Negatively skewed distribution is a distribution in which large values are move towards the right…

Q: A bank vice president feels that each savings accoun custome has, average, threë credlt cards. The…

A: The probability distribution of a random variable includes all the possible values of the random…

Q: What is the most likely shape for a distribution with a mean of 40 and a mode of 45 a.  Symmetrical…

A: Option, C is the correct answer as mode is greater than that of the mean. Because in skewed…

Q: Under what circumstances is the distribution of sample means guaranteed to be a normal distribution?

A: A population includes all members from a specified group, all possible outcomes or measurements that…

Q: Given a standardized normal distribution , what is the probability that (A) Z is less than 1.57?…

A:

Q: a. For samples of size sixty, what is the distribution of the sample mean? b. Is the answer to part…

A: here given random variable X is from population with mean 30 and standard deviation 5 here use…

Q: The standard t value at the central value of sampling distribution of mean equals to? O3

A: A Sampling distribution of mean can be formally defined as a theoretical distribution consisting of…

Q: Given n=10 measurements: 13, 15, 14, 16, 20, 15, 16, 19, 12, 18 The sample variance is

A: Given: n=Sample size=10   The following table shows the required calculations:   X X2   13 169…

Q: If a population has a mean of 25.6, then the mean of the sampling distribution of the sample means…

A:

Q: Which is a negatively skewed distribution?

A:

Q: Which of the statements below is true about the standard error of the sampling distribution of the…

A:

Q: Find the sample variances of the data sets A and B given below. A:3, 4, 6, 7, 10 B:-20, 5, 15, 24

A:

Q: In a large section of a statistics class, the points for the final exam are normally distributed,…

A: Grades are assigned such that top 10% receives A.   The lowest score tat would qualify a student…

Q: for a pertectly symmetrical distribution, which relationship is always true O Manmedian mode O…

A: Here we need to choose from the correct option.

Q: Coefficient of Variation

A: Let us take the given sample taken from a large  Normal Distribution 8, 12, 17, 20, 24, 28, 33, 37,…

Q: Suppose you have a distribution with a mean equal to 100, median equal to 75, and mode equal to 50.…

A: Given that  Mean =100 Median =75 And Mode=50

Q: suppose a distribution has Mean = 20, Median = 10, and SD = 15. Then, the value of coefficient of…

A: Given information- Mean, x-bar = 20 Median = 10 Standard deviation, s = 15 So, Coefficient of…

Q: In a skewed distribution, which two metrics are the farthest apart? It depends on whether there is a…

A: Skewness is determined by mean, median and mode. The data set is said to be left skewed when the…

Q: It is claimed that the mean household size in the River Terrace neighbourhood is 3.5 persons. A…

A: Given that ; Population mean (μ) = 3.5 persons Sample size ( n) = 25  Note :  according to the…

Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.