Which of the following is the correct formula for converting a z score to a raw score? Which of the following is the correct formula for converting a z score to a raw score? X=(Z)(SD)+M X=(M)(SD)+Z X=(Z-M)/SD X=(Z-SD)/M X=(M)(Z)+SD

Q: How to Converting to z Scores is done?

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Q: What percent of data is less than -8%

A: here we can see that shape of curve is bell shaped and symmetric about x = -6 so it is normal…

Q: How would i find the p-value?

A: The test statistic is -1.41.

Q: What proportion of z scores lie beteeen -2 and +2 in the height in inches data set? Round your…

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Q: Hi, how do you do this using excel functions sinstead of Z scores?

A: Given :  Each company earn an annual profit that is normally distributed :  µ is same for both…

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

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Q: You collect data on number of alcoholic drinks consumed by community college students. After…

A: From the provided information, The z score for the sample mean is +0.45.

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: Given that I sample 110 men and 40% own cats. So  40% of 110=0.40×110=44I sample 170 women, and 65%…

Q: I dont see .01 on the z score tables so how do you get -2.33?

A: Given data :  Cardiac pacemaker batteries will stop working if they are not properly calibrated and…

Q: It is a R question. Using your personal random sample of 1,000 observations, find: the average age…

A: #Generating 1000 random sample(considered as age)random<- sample(1:100, 1000, replace =…

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

A: We have to find given proportion.

Q: ate Kobe was 6'6" (or 78 inches).  Suppose the average height of men is 5'9" (or 69") and SD is 3".…

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Q: What is H0? (Groups: 1= Business, 2= Management, 3= Services) Multiple Choices: 1. The mean FIQ…

A: Here we have 3 groups such that Business(1), Management(2) and Service(3). The variable on which the…

Q: True or False: The mean is the same thing as the average

A: Given that Mean is same thing as average

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

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Q: What percentage of scores is between a z of ‐2 and a z of +2? Why is this important?

A: Use Empirical rule to solve it

Q: Who Loves Dogs More?  A random sample of 180 U.S. households found that 62 of them had at least one…

A: Given: n1=first sample size=180n2=second sample size=200 Number of favorable cases in first…

Q: A sample of n = 10 scores has a mean of M = 13. After one score is added to the sample, the mean is…

A: Solution-: Given: n=10,M=13 (old)We want to add one score in the sample, the mean is found to be M =…

Q: Describe the four cases of the Leading Coefficient Test.

A: Let given polynomial function is fx=anxn+an-1xn-1+an-2xn-2+......+a2x+a1x+a0 The graph of given…

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

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Q: How would you interpret the Z score when X = 80, M = 74, s =2? How would you interpret the Z score…

A: Given,mean(M)=74standard deviation(s)=2and raw score(X)=80

Q: Suppose X ∼N (-4,1. Between what xx values does 99.72% of the data lie?

A: Given: X ∼N (-4,1 ) To find: Between what xx values does 99.72% of the data lie?

Q: A class uses weighted averages to calculate your course grade.  Homework is worth 75% of your course…

A: The formula of weighted average is given by,  Xm = ∑xw/∑w = sum of (number × weighing factor)/sum…

Q: What test would i run in excel? The data in Table 7–6 were collected in a clinical trial to…

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Q: A study wants to investigate whether eating oat bran lowers the serum cholesterol levels. Fourteen…

A: It is given that the sample size n is 14.

Q: A researcher is given a sample with variables (x, y) where x represents the number of points a…

A: Coefficient of determination: Coefficient of determination is denoted with r2 and it explains that…

Q: EX = 22.5 Ex2 = 64.91 (X-Xbar )? = SSX 1.63 EY = 135 EY2 = 2595 E(Y-Ybar )2 = SSY = 316.88 ny=11…

A: Provided information is ; 1] For advertising expenditure (x) : sample size(nx) = 11 ∑x = 22.5 , ∑x2=…

Q: Calculate a student's grades used weighted average follows. The second test was the midterm, it is…

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Q: You are testing the claim that the proportion of men who own cats is significantly different than…

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Q: How do I do Z score problems?

A: Introduction The z-score gives an idea of how far the data point is from the mean value.

Q: The expression S(Xi) directs us to find the  sum of scores median  average of the scores  middle…

A: The expression S(Xi) directs us to find the sum of scores

Q: how do i calculate a z score or find the X-Value and determine if a score is usual or unusual

A: A z-score measures exactly how many standard deviations above or below the mean a data point is.

Q: The Chair of Psychology, Dr. Vicary, takes her cat, Fluff,  to the veterinarian for an annual…

A: Given Data: Fluff's Weight Z =  -1.88  Fluff's Temperature Z =  1.15   Z-score represents the…

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

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Q: What would happen to the variance of test scores if an instructor multiplies each score by 2? a. It…

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Q: how did you find the Z score?

A: The critical value  of z for 97% confidence  interval  is 2.17.

Q: P-value using z score?

A: here , for p value calculated based on type of test (left , right or two tail test ) and test…

Q: How to count z-score?

A: Let X follows the normal distribution with mean µ and standard deviation σ.

Q: how do you find the coefficient of determination with only data points?

A: If we have to find the coefficient of determination, we can use the following formula:

Q: You are testing the claim that the proportion of men who own cats is larger than the proportion of…

A: Denote p1, p2 as the true population proportions of men and women who own cats, respectively.