What is D4 ?   What is the P68 ?   What is Q1 ?   What is P55 ?

Q: SOLVE FOR THE FOLLOWING with complete solution:  1, 2, 2,  3, 4, 4, 5, 6, 7, 8, 8, 9, 11, 13, 15,…

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Q: Find the raw score which corresponds to z=1.6?

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Q: COURSE: HUMAN FACTOR ENGINEERING Eye height is 1630mm and SD is 69 z= 1.64. Calculate the 95 th…

A: The 95th percentile is, z=x-μσ1.64=x-163069113.16=x-1630x=1630+113.16=1743.16

Q: What scale of measurement is being used when a teacher measures the number of correct answers on a…

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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: how do you calculate the P-value without excel

A: From the given solution, we get z = -0.957    = -0.96       ( round upto 2 decimal places )…

Q: Solve for the following. Show your complete solution and emphasize your final answers. For…

A: Quartile  Qi class=i(n+1)4th value of observation Percentile Pi class=i(n+1)100th value of…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: n = 900 x = 363 P0 = 0.57

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: G iven:  mean =85    s=12     n =3500 What % of scores are between 97 to 109 ?

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Q: 4. Upper 38% 5. Lower 55%

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Q: Alex is 80th in his class of 320 students. What is his percentile rank in class?

A: Data given p=80, n=320

Q: According to College Board the scores on the AP History exam are normally distributed with N(72,…

A: It is given that the scores on the AP History exam are normally distributed with N(72, 7.5).

Q: Did Clayton State St quarantine? You wonder if the shelter-in-place orders in the Spring of 2020 led…

A: According to the given information in this question We need to write conclusion at 5% significance…

Q: A social worker reports that 30% of workers in a factory are below 15 years of age. Of the 120…

A: Let p denotes the population proportion of workers in a factory who are below 15 years of age. Given…

Q: you want to do a survey to help you estimate the true porportion of current students who have…

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Q: M= 90 SD= 7.8 What raw score is needed to be in the top 8%?

A: *Mean μ=90SD σ=7.8Top 8%⇒P(X>x)=0.08⇒P(X≤x)=092Corresponding  z-score is obtained as

Q: How did it resulted to 0.8749 at letter b? As I review the z-score table, z = -1.15 is equivalent to…

A: Actually you have seen the table for for left tailed side i.e. P(Z < -1.15)  But we have to solve…

Q: What would s2 = 0 tell you about your sample? What would s2 = -25.397890175675 tell you?

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Q: Xold = 78  M = 72   s = 15 Xnew= ?  M = 75   s = 10 What is the new raw score?

A: Solution-: Given: Xold=78,M=72,s=15            Xnew=?,M=75,s=10 We want to find new raw score=?…

Q: In a survey of 1150 adult males, 805 said they use the Internet. In a survey of 1050 females, 746…

A: There are two dependent variables which are males and females. The independent variable is using of…

Q: 1.128 Find an SAT percentile. Reports on a student's ACT or SAT results usually give the percentile…

A: Suppose a random variable X, defines the SAT scores of a student.

Q: Suppose X ∼N (-4,1. Between what xx values does 99.72% of the data lie?

A: Given: X ∼N (-4,1 ) To find: Between what xx values does 99.72% of the data lie?

Q: (d) Find the 10th percentiles. (Round your answer to two decimal places.) X = X-bar = 66.67

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Q: a reading test. Shaylen's score of 455 was higher than the scores of 4276 of the 7212 students who…

A: Given a reading test, Shaylan's score of 455 was higher than the scores of 4276 of the 7212 students…

Q: SOLVE FOR THE FOLLOWING with complete solution:  1, 2, 2,  3, 4, 4, 5, 6, 7, 8, 8, 9, 11, 13, 15,…

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Q: (b) Find the 55th percentile of the number of calories. Round the answer to two decimal places. The…

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Q: The z score length of a carrot is 1.5, what is the length of this carrot?  what percentage of…

A: We have to find  the percentage of carrots....

Q: Sleep apnea is a disorder in which you have one or more pauses in breathing or shallow breaths while…

A: Answer Given Favorable cases [x] =210Sample size [n] =420

Q: x 1.8 2.3 6.7 11.3 16.7 25.2 26.9 27.9

A: Percentile is the value in the data set below which certain percentage of the data lie.   The…

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…

Q: Consumer Reports has decided to test the efficacy of 4 different ant killing sprays. They take ran 8…

A: From the information, the mean square value for between is 6177.13 and the mean square value for…

Q: if the 90% C for the population mean is (-2.58, 7.54) what is the sample mean O a 248 Ob. 10.12…

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

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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: If a person’s z score equals 2.08, what is their percentile?

A: Given info: The person’s z score equals 2.08.