Scores on a Literature test have an average of 80 with a standard deviation of 6. What is the Z-score of a student who got 74 on the test?

Q: A distribution of values is normal with a mean of 123.2 and a standard deviation of 62 Find P35,…

A: Given: A distribution of values is normal with  μ=123.2 , σ=62

Q: On a recent quiz, the class mean of 74 with the standard deviation of 3.9.  calculate the z-score…

A: Given data  μ = 74σ = 3.9x1 = 95x2 = 70

Q: What is the corresponding Z- score, mean is 110, standard deviation is 8 and x is 90

A: In question, We'll find the Z - score for mean 110, standard deviation 8 and x = 90. The solution is…

Q: Test scores for a history class had a mean of 89 with a standard deviation of 8.9. Suppose a student…

A: According to the given information, we have Mean = 89 Standard deviation = 8.9 Raw score = 67

Q: The class mean for the exam was 82 with a standard deviation of 6.  There are 37 students in the…

A: We have given that, Mean = 82 , standard deviation σ = 6  sample size n = 37   Standard error of the…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: To qualify for a job at Skourald Inc. a candidate must place in the top 15% on a performance test.…

A: Given that  To qualify a job a candidate must place in the top 15% on a performance test. The…

Q: A set of test papers is normally distributed with a standard deviation of 5. If Riley scored an 83…

A:

Q: On a national achievement test score was 850 with a standard deviation of 100. What proportion of…

A:

Q: The mean of the data is 25.16 and it's coefficient of variation is 18.75 . Find the standard…

A: The coefficient of variance, COV = sx¯*100 s is the standard deviation x¯ is the sample mean To find…

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: The median score on a test was 80% with a standard deviation of 5%, what does that tell you about…

A: Central tendency is used to determine the average of the data set. Dispersion is used to determine…

Q: A psychologist finds that the intelligence quotients of a group of patients are normally…

A: According to the provided information,

Q: An IQ test has a mean of 97 and standard deviation of 10. Which is more unusual, an IQ of 87 or an…

A: Given data  μ = 97σ = 10which score is more unusual? 87 or 110?

Q: The scores on a standardized test are approximately normal with a mean of 83 and a standard…

A: Let T be minimum score needed to be in top 8%

Q: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

Q: A test score of 45 has an equivalent standard score (z-score) of 1.6. If the mean test score is 39,…

A: given dataraw score  x = 45standard score   z = 1.6mean μ = 39S.D.  σ = ?

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Consider X be a random variable which follows normal distribution indicating the score earned on a…

Q: A standardized test of intelligence is scaled so that the mean IQ is 100, and the standard deviation…

A: Given that information  Mean = mu= 100  Standard deviation = s =15  Zscore = (x - mu)/s

Q: on a national achievement test score was 850 with a standard deviation of 100. what proportion of…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: on first math exam , the class average was 90 with a standard deviation of 10. you scored an 100.…

A: The class average was 90 with a standard deviation of 10. That is, μ=90,σ=10. He scored an 100. That…

Q: A population has mean 27 and standard deviation 12 . What is the data value that has a z-score of -2…

A: Given data, Mean=27 sd=12 z=-2 x=?

Q: he mean on an exam is 80 with a standard deviation of 5 points. If Joe scored a 90 on the exam, what…

A: given data, μ=80σ=5x=90 z score for the given data=?

Q: A commonly used standardized test in psychology research is designed so that the mean score of all…

A: From the provided information, Mean (µ) = 140 Standard deviation (σ) = 20 X~N (140, 20) Here X be a…

Q: A study was conducted on shoe sizes of students, reported in European sizes. For the men, the mean…

A: Answer:- Given, In European sizes , the mean size = 43.96  standard deviation = 2.24  Also given…

Q: The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for…

A: It is given that the mean test score and standard deviation for history test are 63 and 9, the mean…

Q: A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What…

A:

Q: Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: Test scores for the SAT are close to normal with an average of 850 and a standard deviation of 100.…

A: Given information: Mean SAT test scores μ=850 Standard deviation of SAT test scores σ=100 The SAT…

Q: At a college, the mean height of women is 63 inches with the standard deviation of 3 inches. What is…

A: Given,mean(μ)=63standard deviation(σ)=3

Q: Find P(saving patient)

A: NOTE-AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY PLZ RESUBMIT OTHER QUESTIONS AGAIN…

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.