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

Q: The manager wants to rank the five employees based on performance with number of errors weighted…

A: Note: As per the guidelines, in case of multiple questions, answer to the first question will be…

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: d. Find the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places. Q1:…

A: d) The mean is 102 and the standard deviation is 16.

Q: How do you find the area to the left of t-score?

A: t-distribution: t distribution tends to be normal distribution when the sample size is enough large.…

Q: A simple regression of y vs x reveals, for n = 22 observations, that r = 0.73. The standard…

A: There are n = 22 observations.

Q: Where do p-values concentrate?

A: Under the null hypothesis H0 about the unknown distribution of the test statistic, the p value is…

Q: What is the percentage of scores that lie between a z score of -2 and a z score of 1?

A:

Q: In the backward elimination process, what happened in the first step? How many steps are in the…

A: In backward elimination, it begins with a model containing all the independent variables of…

Q: The z value tells us the number of ____________ that a value of x is from the mean

A: The z value tells us the number of Standard Deviations that a value of x is from the mean

Q: The area to the right of z-score of 0 is

A: We know that the Z is standard normal variate with mean 0 and variance 1  i.e. Z~N(0,1) Since the…

Q: Find the z-score that cuts off 65% in the body on the left.

A:

Q: Find the z-score that separates the largest 5% of scores from the rest.  Round your result to 3…

A: Obtain the z-score that separates the largest 5% of scores from the rest. The z-score that separates…

Q: Help me figure out what is a p-value?

A: In this case, we need to define the p-value.

Q: What is the t- value associated with 19° of freedom and 5% in a tail?

A: The test is one tailed.

Q: What is the decision rule for the t-test that the mean child mortality rate for countries in Eastern…

A: It is tested that the mean child mortality rate for countries in Eastern Europe is more than the…

Q: What is the critical difference? Is (P)Less than or greater than .05?

A:

Q: How would you report the results? The derived t = 0.74 was not significant at p = .05 with df = 19.…

A: The mean significant difference between the two sample and the population parameter for smaller…

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: 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: I was testing H,:= 12 vs.H1: µ > 12 with a sample of 40 observations. My test statistic was Z =…

A: The probability is the equal chance of occurrence for any observation involve in the sample. If the…

Q: The estimate of the standard error of the mean is computed as?

A:

Q: The median is equal to the 5th decile. True or False?

A: Solution

Q: a) Calculate the z-score for Roberto's test grade. b) Calculate the z-score for Derek's test grade.…

A: For art history, mean = 77 and SD = 9.6 For English, mean = 66.9 and SD = 10

Q: Find the z-score that cuts off 40% in the tail on the left

A: Our aim is to find the find the z-score that cuts off 40% in the tail on the left

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

A: Here given equation and given value of Y

Q: What is t-value for Degree of freedom=23 and α= 0.01?

A: What is t-value for Degree of freedom=23 and α= 0.01?

Q: Find the z-score z_0.025

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

Q: The i test to be used has the value:

A:

Q: How would you interpret a z score of ‐3.0?

A: To finde z score we need mean (mu) and standard deviation (sigma) of the sample. We Calculate z…

Q: How do calculate a z-score

A: In general z-score is the standard normal score.

Q: can you find p-value?

A: Here, we are willing to test if the unemployment rate for three regions are equal or not.  The…

Q: The athletic director at a large university compared the proportions of freshmen (1st year students)…

A: The hypothesis is, Null hypothesis: H0: There is no difference between proportions of freshmen and…

Q: Does the t test indicate a significant relationship between price and the overall score? Compute…

A: Note: Since you have mentioned (a) subdivision separately we will answer the same. a) In the given…

Q: How do you calculate z-score?

A: Formula to calculate z - score  z = x - μσ

Q: How is a z-score obtained? What is the interpretation of a z-score? An observation has a z-score of…

A: We have to give formula and interpretation of z score.

Q: What should we do with a small p-value?

A: The P-value is the probability we get the value of the test statistic, or something "more extreme"…

Q: A population has µ = 50. Which value of σ would make X = 55 an extreme value out in the tail of the…

A: Given µ = 50 X = 55

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: What are the endpoints of the interval estimator for B2 with a 99% interval estimate?

A: Given: Sample size, n=62 Regression equation is - y=97.25+33.74xStandard error β1=3.86Standard error…

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

A:

Q: A set of n = 10 pairs of scores has ∑X = 20. ∑Y = 30 and ∑XY = 74. What is the value of SP for these…

A:

Q: What is the measure of ∠x in this diagram?

A:

Q: The correlation between the heights ( measured in inches ) of brothers and the heights of their…

A: Solution Given the correlation between the height of  brothers and the heights of their sister is r=…

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: What is the relationship between R sqare and p-value?

A: Relationship between R square and p-value

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

A:

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.