Find P65, the 65th percentile.

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: Find the Mean number of the percents 4.38+4.62+4.88+5.02+5.33+6.30

A: Mean is the measure of central tendency. mean of the observations is sum of observations divided by…

Q: find 40 th percentile   10,15,18,16,19,20,24,15,26,20,22,25,28,17

A:

Q: find 37th percentile   15,28,65,45,85,35,95,65,85,42,50,60,45,85,6

A:

Q: Sally just received her SAT results. Her SAT mathematics score was 600 and is in the 74th…

A: The score is 600 and it is the 74th percentile.

Q: In a survey 500 adults were interviewed, 150 said they had early medical checkup. Find the 95% for…

A: Givensample size(n)=500No.of adults said they had early medical checkup(x)=150p^=xn=150500=0.30

Q: Heights of NBA All-Star players are normally distributed. 97.5% of players have a height of 85…

A:

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: What is the weighted mean of the numbers 10%, 30%, 60%, 70, 86 and 94

A: The formula of weighted mean is given by…

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

A:

Q: Find the z-score that separates the largest 5% of scores from the rest.  Round your result to 3…

A: Obtain the z-score that separates the largest 5% of scores from the rest. The z-score that separates…

Q: A student gets 9 out of 15 problems correct on a homework assignment. What percent of the assignment…

A: The objective of this question is to find out the percentage of the assignment that the student got…

Q: Find out the median of the following items : 10, 8,.5, 13, 4, 9, 7

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

Q: 1, 6, 6, 6, 7, 7, 8, 9, 13, 10, 17 The 10th percentile would be

A:

Q: Give the scores: 88, 64, 77, 94, 67, 59, 99, 87, 94, 71,75 Find the score at the 72nd percentile or…

A: Given data is88,64,77,94,67,59,99,87,94,71,75sample size(n)=11

Q: find find 5th deciles of the data  15,45,78,56,23,28,15,46,75,89,99,68,36,28,73

A:

Q: given the difference equation below where x(k)=1 for k>=0. y(k)-y(k-1)+y(k)=x(k). use the sequential…

A: Givenx(k)=1   k≥0 Simplifying the given equation we gety(k)-y(k-1)+y(k)=x(k)For all…

Q: The test score at the 25th percentile is 108. What is the test score at the 75th percentile?

A: Solution

Q: Find 36th percentile for given data 11,58,45,25,65,45,65,12,35,88,14,56,18,92,35,…

A: Given data is11,58,45,25,65,45,65,12,35,88,14,56,18,92,35, 87,45,65,98,41,82,6

Q: find 25th percentile   101,103,106,108,115,117,119,125,137,149

A:

Q: competed in an ironman race, J

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

Q: You did a survey of students on campus to see if they used the light rail or not. 41 student said…

A: percentage problem

Q: The 20th percentile is how many inches?

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

Q: 78th percentile   105,108,120,115,112,116,115,118,119,120,111,125,135,114

A:

Q: find 40th percentile 14,16,18,19,20,24,25,26,28,29,30,32,35,36,38,39

A: Givan Arranging Observations in the ascending order, We get :…

Q: Cricket’s is a popular club for students from the nearby college. The club had 840 customers during…

A:

Q: 22 Legacy boys and 19 Legacy girls play flag football. 30 Legacy boys and 32 Legacy girls…

A:

Q: Find the median of the given data: 63,83,55,78,65,98,45,32,66

A:

Q: There were 34 females that weighed over 250 pounds. What percent of females aged 20 to 29 weighed…

A: Given data,  N~(161.61,48.95)  i.e., μ=161.61σ=48.95   If n=34 P(X>250)=?

Q: Relatives gave Timothy $15,$50,$25 and $18 for his birthday.What is the mean amount of money…

A:

Q: Find the 90th percentile. So 10% of the T

A: Let X be the lifetime of LCD TV sets follows an exponential distribution with a mean of 100,000…

Q: find 56th percentile   101,110,112,116,114,113,105,106,107,114,106,108,107

A: From the given information we want to find the 56 the percentile.

Q: Find the median and the mode of the set of data: 98.6, 102, 101, 98.6, 98.5, 98.6, 99.0, 98.6, 97.3,…

A: The solution is :

Q: Is the average time to complete an obstacle course different when a patch is placed over the right…

A: Right (x) Left (y) d (x-y) d2 44 41 3 9 47 45 2 4 41 39 2 4 48 49 -1 1 41 39 2 4 47 43 4…

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.