Fred received an SATV (SAT verbal) score of 520. For SATV scores we know μ = 500 and σ = 100 and that the scores are normally distribute in the population. Calculate Fred’s Z-score. Also, what percentage of the popu

Q: A retail store is considering adding a new product line to its inventory. The store wants to know…

A: Sample size, N = 125favourable cases, x=70Confidence level, cl = 0.90level of significance,  = 0.10

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A:

Q: Activity 2 of 3 What percent of Braves players fall between 230 and 270? O A. 95.4% O B. 47.7% O C.…

A: Answer Option c = 68.2% is correct

Q: Assume that the results are normally distributed. Pedro took an exam in a class in which the mean…

A: The formula for z-score is z = x - μσ where μ is the mean and σ is the standard deviation.…

Q: A student has taken a 50-point exam and wants to know how his score of 38 compares to the scores of…

A: It is given that Mean = 40 Standard deviation SD = 4 Score X = 38

Q: A sample of n = 6 scores has a mean of M = 10. One score in sample is changed from X = 12 to X = 0.…

A: Given that, n = 6  mean of M = 10

Q: The average score for Indiana public school 6th graders on a standardized reading comprehension test…

A: The hypothesized mean is 75, the sample mean is 75.9 and the standard deviation is 5.

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: Unfortunately, arsenic occurs naturally in some ground water. A mean arsenic level of mu equals 8.0…

A: Part (a): Level of significance:In the given information, it is said that “Alpha = 0.01”. Now,…

Q: Students receive an A+ on a 60 point test if they score 55 points or more.  The marks of a large…

A: Given: X~N(μ,σ)μ=50σ=5

Q: Katherine earned a score of 1000 on Exam A that had a mean of 700 and a standard deviation of 100.…

A: Here we need to find the score for Katherine in exam B such that it's equivalent to the score for…

Q: Dr. Smith administered a test to her statistic class with 25 questions that were worth one point…

A: If n is multiplied by each observation, the new value for mean is, E(n×X) = nE(X) If n is multiplied…

Q: The scores on two standardized tests are normally distributed. The first test had a mean of 58 and a…

A: The first test had a mean of 58 and a standard deviation of 10, and the second test had a mean of 80…

Q: A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of…

A: ANSWER:-

Q: Suppose a friend tells you that the average length of trout caught in pyramid lake is u=19 inches.…

A: Given information Hypothesized mean = 19 Sample Standard deviation = 3.5 Sample mean = 18.6 Sample…

Q: A sample of blood pressure measurements is taken from a data set and those values​ (mm Hg) are…

A: The values of systolic and diastolic measurements are given. Sample size = n = 10. Mean is the ratio…

Q: How does the median birth weight compare to the average birth weight?

A: Given that birth weights of children born in the United States are normally distributed with mean =…

Q: o these calculations using Excel, a graphing calculator, or an app. Type the data in different…

A: The number of observations is 6.

Q: 1. The degrees of freedom are: Select ] 2. The mean square for groups (MSG) is: [Select] 3. The mean…

A: It is given that Sample size n = 45 Number of groups, k = 3 SSG = 192247.3, SSE = 117737.3

Q: The average American gets a haircut every 34 days. Is the average different for college students?…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: Find the variance

A: Given : X~N(0, 7)

Q: ora earned a score of 14 on Exam A that had a mean of 20 and a standard deviation of 4. She is about…

A: Nora earned a 14 on Exam A score that had a mean of 20 and a standard deviation of 4. She is about…

Q: The mean score on a driving exam for a group of drivers education students is 72 points with a…

A: Given information: The mean score on a driving exam for a group of drivers education students is 72…

Q: My Physics professor announced that top 18% will get A in the class.               Class mean is 72,…

A: Let X= score of a student  Given that X follows a normal distribution with mean=72 and standard…

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: given: mean = 34  mean of the sample = ∑xn  = 31.4 to find: i) type of test ii) null and alternate…

Q: Suppose we had the following summary statistics from two different, indepen distributed populations,…

A: Two different, independent and approximately normally distributed populations both with variance is…

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: Ms. Gonzalez has recorded the test scores for each of her 25 students. She has calculated EX? 320…

A:

Q: Karen scored a 76 on an exam whose mean is 74 and whose standard deviation is 8. Find her z score.

A:

Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as: