If Elson's z-score on post-assessment is -3, the mean is 10 and the standard deviation is 2, what was his raw score? A. 4 B. 12 C. 16 D. 20

Q: Here are Jessie and Alex's exam scores and each tests' mean and standard deviation.Jessie score =…

A: GivenJessie score=15Mean(M)=10standard deviation(s)=1Alex score=120Mean(M)=118standard…

Q: Sergio is doing a long hike and is carefully calculating his pack weight. An energy bar has mean…

A: An energy bar has mean weight 1.75 ounces An energy bar has standard deviation 0.019. A juice box…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: Given:  This lake is famous for cutthroat trout. A friend tells you that the average length of trout…

Q: You are interested in whether or not two measures of children behaviour  are equlvalent. The…

A:

Q: Raul received a score of 73 on a history test for which the class mean was 70 with a standard…

A: Here we need to find the z score and for that, we have to use the formula z = Value-meanStandard…

Q: u and your friend have recently taken two different standardized mathematics exams. You scored 92 on…

A: The mean = 100The standard deviation = 10

Q: aul received a score of 79 on a history test for which the class mean was 70 with a standard…

A:

Q: What would be the effect on the standard deviation of the set of scores 13, 14,15, 15, 16, and 17 if…

A: We have to find effect of membres on standard deviation.

Q: 6. Jared has a mean of 74 on his quizzes, with a standard deviation of 7. On his most recent quiz,…

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

Q: This looks like another problem. Read carefully. Sergio is doing a long hike and is carefully…

A:

Q: The average monthly salary for newly - hired teachers is P21,945. If the distribution is…

A: Given that. 4) X~N( μ , ?)   μ=21945 , ?=3250 , z=1.15   Z-score =( x - μ )/?

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: If the main level of snowfall for Boston Massachusetts is 44 inches per year and the standard…

A:

Q: Assume the cholesterol levels of adult American women can be described by a Normal model with a mean…

A:

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

A:

Q: There are two major tests of readiness for college, the ACT and the SAT. ACT scores are reported on…

A: From the provided information, For ACT score: Mean (µ) = 21.5 Standard deviation (σ) = 5.4 For SAT…

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: Lucy got a score of 75 from her statistics class. Assuming the scores of her class formed a normal…

A: a. The pth percentile of a set of observations is the value below which, p% or (p/100) proportion of…

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: Sergio is doing a long hike and is carefully calculating his pack weight. An energy bar has mean…

A: Given that an energy bar has mean weight 2.28 ounces and standard deviation 0.061. A juice box has…

Q: There were 200 students and their intelligence were measured. The mean and Standard deviation…

A: N=200 Mean =110 Sd =14

Q: n Professor Krugman's economics course, the correlation between the students' total scores prior to…

A: Solution: Given information:  Let x= The pre‑exam totals  and  y= The final‑exam scores  r= 0.5…

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: ASK YOUR TEACHER   Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous…

A:

Q: Pattys final exams have an average of 78 and a standard deviation of 6.  If she wants 4% of her…

A: X follows a Normal distribution with mean = 78 and S.D = 6 Then z=(x-mean)/SD = (x-78)/6  follows…

Q: Listed below are the top 10 annual salaries (in millions of dollars) of TV personalities. Find the…

A: As per company guidelines, I solved exactly three subparts of the question. Given data: 42, 41, 39,…

Q: a quantitative data set has mean 25 and standard deviation 2. approximately what percentage of the…

A: The given data is as follows:Population mean, Population standard deviation,

Q: You have a data set with mean = 40 and standard deviation = 3. What can you say about the percentage…

A: Given  μ=mean=40, sd=σ=3 P(32<X<40)= ?  Note: this probability value calculated from standard…

Q: Suppose that the average score for the first exam was 70 with a standard deviation of 8.  State each…

A: Given that  Mean = M = 70, Standard deviation =Sd = 8

Q: In this exercise, you will compare Chebyshev’s rule and the empirical rule. a. Compare the estimates…

A: a)The Chebyshev’s rule estimates at least 75% of observations lie within two standard deviations of…

Q: You are provided with a mean of 28.18 with a standard deviation of 4.33.  What percent of students…

A:

Q: z-scores to make the following comparison between students. a. Claudia has a score of 61. Her class…

A: Given: For Claudia Raw score = 61 Population mean μ1=74     Population standard deviation σ1=4…

Q: We considered the differences between the temperature readings in January 1 of 1968 and 2008 at 51…

A:

Q: The mean grade in the Physics examination was 73 and the standard deviation was 8. Determine the…

A:

Q: A student obtained the mean and standard deviation of 100 observations as 40 and 5 respectively. It…

A:

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: Beth scored 88 on a nutrition test.  The class mean was 81 and the standard deviation was 3.2.  What…

A: Mean = μ = 81 Standard deviation = s = 3.2 Where, X= 88