The table below consists of 18 numbers. Find the percentile of the value 28. (Note: Percentiles are always rounded to the nearest whole number.)

Q: Find the percentage of data points that lie between -2.31 and 1.85.

A: Assuming the data follows standard normal distribution with mean 0 and standard Deviation 1Finding…

Q: A statistics professor made the following histogram for the scores on her class’s first exam.   If…

A: From the Histogram, the scores and the corresponding frequencies are, Given that the passing score…

Q: The employees of a local manufacturing plant pledged the following donations in dollars to the…

A:

Q: Determine the percent of data greater than z=−1.40.

A: Know that  X~N( 0 , 1 )   μ=0  , ?=1 (for standard normal distribution)    Z-score =( x - μ )/?

Q: Part 2 x²0.025,15

A:

Q: Determine whether the data set is a population or a sample. Explain your reasoning.   The number of…

A: Population:Population consists of the complete subjects that are included in the study for making…

Q: Kari wants to do an experiment to see if class level (freshman, sophomore, etc.) affects total…

A: An experiment can be repeated multiple times and it has well-defined possible outcomes.

Q: of flowers on each bush is 9, 8, 14, 4, 13, 5, 9, 8, 6, 8. Find the percentile for 10.  Round your…

A: Hai

Q: How do you tell percentiles in a table

A: Percentile is a score that tells the value below which a given percentage of values falls in a table…

Q: Given: Test scores are 59 95 82 78 66 82 65 78 66 66 79 82 66 82. Find the PERCENTILE for the test…

A: We have to percentile for 79 ..

Q: When the Standard Score = -1, what is the percentile of the raw score? %3D O 2nd 14th O 16th 34th…

A: It is an important part of statistics. It is widely used.

Q: The histogram below gives the length of service of members of the Department of Chemistry at a…

A: Given:

Q: Many athletes (and their parents) worry about the risk of concussions when playing sports. A…

A: First let us sort the head circumferences (in inches) for the players on the team; No. Head…

Q: You have a sample of 10 (sorted) scores:   -15.5 -13.4 -12.7 -12.2 -11.1 -10.8 -9.1 -8.9 -7.9 -7.1…

A: -15.5-13.4-12.7-12.2-11.1-10.8-9.1-8.9-7.9-7.1Sample of size(n)=10

Q: On a hockey team, there are 14 players. The captain of the team scored on the team, and less than…

A: Given : There are 14 players Captain of the team scored 35 goals last year, which is more than 10…

Q: Find the attached file.

A: Given: 1125 2978 1172 1507 4776 3801 2015 2463 4388 135 3967 1674 1437…

Q: Find the percent of 16/20 and 4/20. What are the relationships between the answers?

A:

Q: 1980 alcohol consumption per capita in the United States? (Round to the nearest percent.)

A: Given: The data given is as follows Australia 9.7 Austria 11.1 Belgium 11.5 Canada 7.6…

Q: You take a medical test and the doctor tells you that your wellness z-score is 1.86. What percent of…

A: Let X be a random variable from standard normal distribution with mean = 0 and standard deviation =…

Q: what does being in the 60th percentile mean?

A: Given that 60th percentile   Let a student got 60th percentile in a exam

Q: 63.7 Silver Cloud 88.7 78.3 91.3 Celebrity Xpedition 87.2 91.7 73.6 Silver Shadow 87.2 75.0 89.7…

A: Regression analysis is a statistical method used to determine the strength and the relationship…

Q: Consider the sample data: 125, 115, 112, 127, 112, 105.

A: Data set: 125, 115, 112, 127, 112, 105

Q: Find the percentile for the data value. Data set: 3, 11, 7, 22, 3, 23, 13; data value: 7

A: Data set is 3, 11, 7, 22, 3, 23, 13

Q: Determine whether the sample is biased or unbiased

A: Given a situation, we need to find whether it is biased or unbiased.

Q: What is the percentile rank of a bag that contains 1025 chocolate​ chips?

A: The mean is 1252 and the standard deviation is 129.

Q: Consider the chart below that describes the average student runner speeds. Find the percentile…

A: Given data of average student runner speeds as shown below2 2.5 3 4 5 6 2.75 8 107 4 5.5 8 2 3.5 5.5…

Q: q11- Median is which percentile of the data? Select one: a. 25th. b. 50th. c. 75th. d. 80t

A: b. 50th

Q: Marla scored 70% on her last unit exam in her statistics class. When Marla took the SAT exam, she…

A: solution:  The difference is that Marla’s exam in her statistics class was graded by percent of…

Q: why do we study or use 5 averages in statistics? Elaborate

A: The 5 types of averages we use in statistics are: 1- Arithmetic mean 2-Mode 3- Median 4-Root mean…

Q: Compare the two grading systems below.  Round to the nearest hundredth. Grading System A Grading…

A: Given : Convert percentage data in decimal we get :

Q: data set has five values. The 45th and the 55th percentile are both 16. The largest value is 64, and…

A:

Q: The 20th percentile is how many inches?

A: The mean is 64 inches and the standard deviation is 2.5 inches.

Q: The percentile gives an indication of the relative position of the scores. True or False?

A: Partition values are the values which divide the series into a number of equal parts.  * Three…

Q: You have a sample of 10 (sorted) scores: -15.5 -13.4 -12.7 -12.2 -12 -10 -9.1 -8.9 -7.9 -7.1…

A: From the provided information,Number of observations (n) = 10

Q: A survey asked office workers what they like t- do when taking a break from work. Preferred break…

A:

Q: Joey took a survey of his classmates' food preferences and recorded them in the table below.…

A: Relative frequency

Q: Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time is in the 85th…

A: It is clearly given in statement that at Department of Motor Vehicles waiting line is Mina wait time…

Q: in the highest 2.5 percent eat?  What is the z-score

A: Given that 2.5% of the highest area present in the data. That is, P(Z>z)=2.5%=0.025…

Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!