When the Standard Score = -2, what is the percentile of the raw score? O 2nd O 14th 16th 34th 84th

Q: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.  Explain…

A: Given: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.

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: What is the probability of the ball landing on 21 playing Roulette? Make sure to round to 2 decimal…

A: Roulette has numbers 1 through 36 inclusive

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

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Q: find out 3rd decile  65,85,75,30,20,42,94,34,75,15

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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: Only 12 men have walked on the moon.  The average time these men spent on the moon was 43.92 hours.…

A: Sample: A smaller group of individuals taken from the population is called the sample. Statistic: It…

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

A:

Q: The scores of University exams are displayed on the board. The scores of students are :-…

A:

Q: I think you are wrong on the median for Rural. I get 8.1. Can you please check other answers as…

A: For Urban, the data in ascending order is11, 11, 12, 13, 16, 18, 18, 21, 22, 24, 29, 49, 94,, 107,…

Q: 95 percent divided .025 what is the z score?

A: The z-score is obtained as given below: PZ≤z=0.025z=ϕ-10.025=-1.96  Using Standard normal table

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: What is the average of  2.0, 32.0, 44.0, 14.5, 7.5 ?

A: For a set of n observations, x1, x2, ... , xn, mean or average is given by, This is measure of…

Q: Determine the mean of the following: 21, 43, 96, 104, 32

A: We determine the mean of the following:   21, 43, 96, 104, 32

Q: A poll showed that 46.1% of Americans say they believe that statistics teachers know the true…

A: Given : The proportion of who believe that statistics teacher know the true meaning of  life : p =…

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: 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: A measure of tire wear is the percentage of tire groove lost by the tire since new. A senior JJ…

A: From the provided information,n = 15The data values are as follow:…

Q: Explain the sample mean of the difference scores varies.

A:

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: 85% of 0.74=

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

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Q: Eight movies based on Marvel comic book characters for the U.S. box office as of fall 2017 are shown…

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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!