Which of the following are the mean and standard deviation of Y?

Q: You calculate that the standard deviation of a set of observation is 0. This tells you that.....?

A: The standard deviation measures the deviation of data points from mean. Its formula involves the sum…

Q: The mean is u: = and the standard deviation is o: =

A: Given,

Q: All of the below sets have the same mean.       Set 1-Standard Deviation=3.1       Set 2-Standard…

A:

Q: the variance and standard deviation are based on the________________?

A: Variance, standard deviation and mean deviation:Variance is the average of squared difference of…

Q: Which of the following is the value of x if in a normal distribution the z – score is -1.25, the…

A: According to the given information, we have Z score = -1.25 Mean = 60 Standard deviation = 9

Q: What percent of data points fall in the range of z=-1.5 and z=1.5 standard deviations of the mean

A: From the provided information, The range is between z = -1.5 to z = 1.5

Q: What is the standard deviation of y?

A:

Q: The covariance between the returns of A and b is -0.112. The standard deviation of the rates of…

A:

Q: find 1.mean 2.standerd deviation

A:

Q: if Y=3X+7 , find the standard deviation of Y.

A:

Q: 3. In regard to the standard deviation you calculated on #2, what is one conclusion you can make…

A: You have asked only question 3. So, the answer is given for question 3 below in the next step.

Q: Which of the following is the correct formula for the margin of error of a population mean where the…

A: Margin of error: A margin of error is a statistical measurement for the diff. between actual and…

Q: Let the variance of Y is 4x^2. What is the standard deviation of Y?

A: Given that: The variance of Y is 4x2.

Q: What is the Z value for a value of X = 60?

A:

Q: Which of the following is least affected if an extreme high outlier is added to your data?…

A:

Q: Which of the following values for the population standard deviation would cause a score located…

A: Given different values of standard deviation and we need to select the one which makes value of x to…

Q: Suppose that you have a X= 75 on an exam with Ú=70. Which standard deviation would give you a better…

A: Given : Suppose that you have a X= 75 on an exam with Ú=70

Q: Which of the following statements is true regarding of the value that corresponds to the decile 6 of…

A:

Q: If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then I.Q. of 130 will have…

A:

Q: e. What is the variance of X? f. What is the standard deviation of X? е.

A:

Q: Write down the formulas for the standard deviation of x.

A: The formula for the sample standard deviation can be written as: Here, n is the sample size and x̅…

Q: suppose you have the population values 50 and 80 and their corresponding z-scores are -1 and 2, mean…

A: Let, X1=50, X2=80 and Z1=-1, Z2=2

Q: In a particular examination, the mean score is 82 and the standard deviation is 3.7. Wha is the Z-…

A: Given that the mean is 82 and standard deviation is 3.7. That is, μ=82σ=3.7

Q: 3) Which of the following is a biased estimator? 3) A) variance B) standard deviation C) mean D)…

A: which of the following is biased estimator

Q: If the standard deviation of the data .S={5,20,a} is 15. Find the value of a

A: Given: SD=15.   Also, by the formula of standard deviation:SD=∑x-x2n-1

Q: Use the following information to answer the question. The mean age of lead actresses from the top…

A: Given that, μ=29.6 yearsσ= 6.35 years Let X denote the distribution of the actresses ages is…

Q: Which of the following four standard deviation values would produce the more platykurtic…

A:

Q: What is the deviation?

A: Deviation is Difference between the Given observed value and One fixed Value...

Q: How standard deviation affects the power?

A: With increase in standard deviation, The observed point will be located far away from the mean.…

Q: A score that is 20 points above the mean corresponds to a z-score of z – 1.25. What is the standard…

A: Given: z= 1.20 20 points above the mean. that is

Q: A very bright student is described as having an IQ that is three standard deviations above the mean.…

A: Given information- We have given that a very bright student has an IQ that is three standard…

Q: Suppose X ~ N(8, 9). What value of x is 0.67 standard deviations to the left of the mean?

A: From the provided information, Mean (µ) = 8 Standard deviation (σ) = 9 X~N (8, 9)

Q: A quantitative data set has mean 19 and standard deviation 2. Approximately what percentage of the…

A: Given that, A quantitative data set with, Mean = 19 Standard deviation = 2

Q: Find and Stondard deviation X. mean of

A: Let , the probability density function of X is given below, = 0 ; otherwise Our aim is to find the…

Q: is 6% is your standard deviation?

A: Given according to question Sample size(N)=? Confidence =95% Margin of error = 5% Now question says…

Q: Which of the below statements is (are) correct? * a. The researcher may use t-statistics in this…

A: When the population is assumed to be normal t-statistic can be considered using the sample data…

Q: If a number is added to a data set which is far away from the arithmetic mean the what happens to…

A: There are two properties regarding the addition of a number to a data set and its effect on standard…

Q: A distribution of exam scores has a mean of μ = 78. a. If your score is X = 70, which standard…

A: Given: μ=78 More the z score, better grades obtained from the standard deviation. a. The z score  is…

Q: Which of the following are measures on positions of a data seta the maximum the standard deviation…

A: Solution : Measures on positions of a data sets - Positional measures are also referred as measures…

Q: Determine the mean and the standard deviation.

A: We have Given a binomial Distribution that is our random variable X~b(n,p) with parameter n=50,…

Q: The following data give the speeds (in kilometer) as measured by radar of 5 selected cars traveled…

A: The data shows the speeds (in kilometer) as measured by radar of 5 selected cars traveled at NLEX.

Q: When using 1-Var Stats on a scientific or graphing calculator, the resulting statistical output…

A: Introduction: It is required to discuss about the difference between the two different types of…

Q: Which of the following about the mean is NOT true?

A: The objective is to find out the incorrect statement from the given choices.

Q: Which of the following stocks is riskier if you are considering investing in X or Y only? Stock…

A: Given Stock standard deviation coefficient of variation X 40% 2 Y 40% 4 We know that,…

Q: A score of is one and one-half standard deviations below the mean

A: Here Given for Normal distribution with  Mean=μ=30 SD=σ=6

Q: Suppose X ~ N(3, 1.2). What value of x is two standard deviations to the right of the mean?

A: from given distribution in question,   mean :-μ=3 standard deviation :-σ=1.2 X is two standard…

Q: on an exam, Tom scores 12 points above the mean and has a z-score of z=+2.00. the standard deviation…

A: It is given that the difference between mean and raw score is 12 and the z score is 2.

Q: What value of x is two standard deviation to the right of the mean if X ~ N(10, 1)? O 1 O 2 O 4 0 6…

A:

Q: The standard deviation of a variable is 15. If a sample of 100 individuals is selected, what size…

A: The standard error of mean is, SE = σ/√n, where σ is the standard deviation and n is the sample…

Q: A certain data set has a variance of 9.  Find the standard deviation of the data set.

A: Given :-   Variance (S2) =9   we have to find standard devistion.

Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.