How would you interpret a z score of ‐3.0?

Q: A sample of n=5 scores has a mean of x=9. what is Ex for this sample?

A: Mean = 9 n = 5

Q: For a population with μ = 80 and σ = 10,what is the X value corresponding to z = -0.50?

A: Given information Mean (µ) = 80 Standard Deviation(σ) = 10 Z = -0.50 Z-score is given by the…

Q: t does a z-score of -3.8 mean

A: A z-score is known as the standard score that determines how much the data point deviates from the…

Q: If the t-statistic for a variable is -1.74, is the variable statistically significant? No Yes

A: Given: Test statistic is -1.74

Q: What is formula for z score?

A: A z-score is a score which is computed to find out the number of standard deviations a value is away…

Q: In a sample of n=6 scores, five of those scores are each above the mean by one point. Where is the…

A: The formula for mean is given as: X¯=1n∑Xi We are given that: n=6X1=X2=X3=X4=X6=X¯+1

Q: What information is provided by the sign (+/–) of a z-score? What information is provided by the…

A: Let, the dataset scores have a mean µ and standard deviation σ. Then the z score of a given score ,…

Q: What is the CALCULATIONS FOR THE t TEST?

A:

Q: hat is the possible range of values for Pearson's coefficient of skewness?

A: Here  For Perason coefficient of Skewness

Q: A sample of n=8 scores has a mean of M=7. If one score is changed from X =20 to X =4, what is the…

A: Consider the first 7 scores is x1, x2, x3, x4, x5, x6, x7 and the 8th score is, x8=20. The formula…

Q: What is the value of SX + 1 for the scores 1, 6, 3?

A: The sum of scores is 1+6+3 = 10. That is, SX = 10

Q: What is the scale factor of these figures?

A: We will use the scale factor formula: scale factor=new lengthold length=GHCD=1015=23

Q: What is the Mean difference (d) and the SD of Difference?

A: Enter the values of Millennials and Zoomers in columns A and B of excel.   The sample mean for the…

Q: The indicated z score is

A: Given a standard normal distribution graph with mean 0 and standard deviation 1.  We need to find z…

Q: What does the z-score of a data point tell us?

A: The z score is defined as Z = (X - mean)/SD

Q: that the mean score of these 53 students is 147.9. Is this significantly different from the national…

A: Given: Sample size, n = 53 Mean,  Population mean,  standard deviation,

Q: A researcher calculates the variance of her sample to be s = -6. , what would you tell the…

A: Here's the explanation for this as follows; The sample variance, s², is used to calculate how varied…

Q: A score that is 3 points lower than the sample mean has a z-score of z = -0.25, and a score of X =…

A: Given information: Case-1: z = -0.25  Score (X) = u-3  Sample mean (u) = u  Case-2: z = -0.75  X =…

Q: The mean always has a z-score (value) →

A: When the data is converted into z scores, the mean will always end up being zero.

Q: A sample of n = 5 scores has a mean of X-bar = 9. What is ∑X for this sample?

A: From the provided information, Sample size (n) = 5 Mean (x̅) = 9

Q: What is the Z-score for an X value of 10? What is the Z-score for a Y value of 8?

A: Given Information: X Y 3 8 6 2 7 2 14 2 10 6   Z-score is a measure which indicates…

Q: Find the z-score associated with the ACT score X = 26 %3D Find the ACT score from the dataset…

A: Our aim is to find the following :  (a) Z-score for X=26 (b) ACT score for Z=1.064

Q: What is wrong if you conduct a study and you calculated r=-3.0,then what?

A: If we conduct a study and got the correlation coefficient value (r) = -3.0

Q: If the z-score for a motel is 0.7, what is the price of a single room at the motel (in dollars)?

A: The formula for z score is, z=x-μσn In the formula, x is the individual score, μ is the mean, σ is…

Q: Samuel Morse determined that the percentage of a's in the English language in the 1800s was 8%. A…

A: Denote p as the true proportion of a’s in modern newspaper. It is reported that proportion of a’s in…

Q: Human body temperatures have a mean of 98.60° F and a standarddeviation of 0.62° F. If Sally’s body…

A: Let X be the human body temperatures that follows normal distribution with mean of 98.60-degree F…

Q: What is the forecast for Y101 given the data?

A: Here given equation and given value of Y

Q: If the X-value (raw score) is 52 points above the mean and the corresponding z-score is = 1.84, what…

A: Solution: From the given information, X-value is 52 points above the mean and the z-score is 1.84.

Q: Find the z-score z_0.025

A: The random variable z represents the standard normal distribution with parameters . The Excel…

Q: What is the formula for converting z score to original score?

A: Solution: Let X be the random variable. Suppose X has a mean µ and standard deviation σ. Then, the z…

Q: In a sample of n 15, a researcher finds a correlation of r =0.74 between IQ score and average grade.…

A: Given: n=15 r=0.74   We know that, rn-21-r2~ tn-2

Q: Find an approximate z score corresponding to a percentile of 0.33 to its RIGHT.

A: The approximate percentile to the right of 0.33 is 0.67.

Q: If a constant c is added to each xi in a sample, yielding y; = x; + c, how do the sample mean and…

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

Q: What is the minimum z-score that a data point could have in order to remain in the top 5%5% of a set…

A: P(Z>z0)=5%Using standard normal distribution table

Q: A sample of n = 5 scores has a mean of M = 12. If one person with a score of X = 8 is added to the…

A: Given n = 5 mean = 12

Q: Why does the use of multiple t tests increases?

A: The multiple t-tests are defined for a one-sample multivariate test and as well as for two samples.…

Q: Is there a significant relationship between income and the level of work adjustment of the…

A:

Q: What is the p value and z value?

A: The sample sizes are 400 and 500.

Q: You have been tracking how much you spend on gas every month for several months and found that on…

A: The interquartile range is the difference between the third quartile and the first quartile and it…

Q: State whether the z-score locates the raw score x within a sample or within a population…

A: Solution: Given data ×=50,        s=5, x̄ =40  To find: Whether the z-score locates the raw score x…

Q: what is the value of 0.495 from the z-table?

A: We have to calculate z-score for 0.495

Q: what information is provided by the (+/-) of a z-score?

A: The z score tells us that the how far the mean is from the data point. The formula for z score is,…

Q: How do I calculate z score?

A: The z-score describes the position of a raw score in terms of its distance from the mean, when…

Q: A sample of n = 5 scores has a mean of M = 8. if one new score with a value of X = 2 is added to the…

A:

Q: Use the following scores to find the value of (Ex)² = %3D 4 3. 2.

A:

Q: What is the formula for finding the z-score? The z-score of the mean is always z =

A:

Q: Find the p​-value in a test of the claim that the mean College Algebra final exam score of…

A:

Q: Find the z score for test scores of 70 _____ and 90 ______.

A: The z-score of a sample data is Here, mean is 70.3 and standard deviation is 13.5.

Q: - What percentage of guesses fell between z-scores of -1.0 to +2.0?

A:

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.