Why is the answer here 21st percentile not 22nd percentile? I thought it is always safest to round-down for any decimals. Please explain. Thanks!

Q: What is 15% of 60? Showing all work.

A: x% of y =xy100

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: 18.09 is what percent of 11?

A:

Q: Students taking a make-up test receive the following grades: 71, 83, 81, 73, 92, 76, 80, 69, 68, and…

A:

Q: What percentage of the variation of income is explained by education? Do not use decimal place,…

A: The question is about regressionIntroduction :Coefficient of determination :This value indicates the…

Q: When finding median and the middle has two numbers instead of one, what do you do? Take the higher…

A: Median: It is the middle most value of the data set that divides the whole data into two equal parts…

Q: Refer to the following stem-and- leaf diagram. It represents the marks out of 75 of 21 learners in a…

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Q: For your research project you will apply surveys to your classmates, if you know that the generation…

A: It is given that a researcher wants to apply the surveys to his classmates. He wants to generate…

Q: The average (mean) score on an exam was 76.375 in a class consisting of 21 Administration students…

A: From the provided information, The average score on an exam was 76.375 consisting 21 Administration…

Q: What percent of scores are below a T score of 56?

A: Given, T score is 56. Now,

Q: Explain THREE F TESTS.

A: The three F-tests are Ratio of two population variance One-Way ANOVA Partial F-Test

Q: Briefly explain the differences between the terms true relative error percentage and approximate…

A: True error is that the true value of a problem, equation, or something measurable is one value and…

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

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Q: I am confused still. I understand how the 2.33 was obtained but why is the percentage used 0.99

A: Let X denote the lengths of pregnancies in a small rural village are normally distributed with a…

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

A: Given that Mean is same thing as average

Q: 49.5 is what percent of 33?

A: Let x percent of 33 is 49.5. It follows: x100×33=49.5x=49.5×10033x=495033x=150 Therefore, 150…

Q: ahat is measure of dispersion? explain how it does.

A: Measure of dispersion is part of Descriptive Statistics

Q: No it's not for a grade.

A:

Q: What's the IQR? Answer as a single value.

A: It is required to find the IQR for the given data.

Q: How do you determine which exam score is higher relative to others

A: The normal distribution is a continuous distribution.

Q: Could you explain where t-score = -1.97 for 5% come from? I don´t see anywhere

A: The sample size n is 221.

Q: competed in an ironman race, J

A: Here it is given that - 3500 people competed in an ironman race, John finished 805th,

Q: Out of 220 racers who started the marathon, 199 completed the race, 19 gave up, and 2 were…

A: Since you have posted multiple questions i can do first question as per our company guidelines…

Q: How do i calculate finding the percentage between two z scores?

A: To find the probability between two z-scores: z-score represents the number of standard deviations…

Q: Can you help figure out what percentile 78/345 is please? I need to know if it is above 80% .

A: Percentile: The value below which a percentage of data falls is known as the percentile. The formula…

Q: For the relationship between Calories and Carbs, r-squared was = 88.8%.  Describe what r-squared…

A: Regression analysis: The regression analysis is a statistical procedure that allow us to find the…

Q: I saw the examples on samplesscore range , you give a width of 6 but when they do not give you the…

A: Note: Hey there! Thank you for the question. We can solve questions for you, only if you provide the…

Q: one percent of grades are greater than what z-score?

A:

Q: What is the percentile rank x=15 and what is the score for 75th percentile?

A: If the we have no of scores is 15 then we have formula for percentile rank as:…

Q: on a 100 item test romel got a score of 88 which is the 9th decile what does it mean

A: Di = i * (n + 1)  10 th data

Q: Ten percent of students at ACM are nursing students. Forty percent of students at ACM are…

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Q: explain what is measured by the sign of a z -score and what is measured by its numerical

A: here use basic of standard normal random variable z -score

Q: If the test result is significant at 5% level, it must also be significant at 1% level. True O False

A: Given : Significance level , α = 0.05

Q: A survey of 500 citizens of a large country revealed that 70 of them believe the government's…

A: Solution : Given that : A survey of 500 citizens of a large country revealed that 70 of them believe…

Q: A survey of 1179 adults nationwide  asked what irks you most about The actions of other Motorist"The…

A: Given: Number of People surveyed=1179 People voted for tailgater=796 To find: Percentage(x).

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: Obtain the sample size. The formula of sample size is, Obtain the area of probability in the right…

Q: How does estimation help you when working with money amounts?

A: Estimation: Estimation means approximating a quantity to the required accuracy. This is obtained by…