A distribution of values is normal with a mean of 213.1 and a standard deviation of 74.6. Find Pre, which is the score separating the bottom 78% from the top 22%. P78 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z- scores rounded to 1 decimal places are accepted. Question Help: O Message instructor Submit Question

Q: In a data set that has a normal distribution, approximately what percent of the data falls within…

A: Percentage of information that falls within one standard deviation of the mean is P(-1<t<1)=…

Q: A machine produces a certain copper tubing component in a refrigeration unit with a mean diameter of…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: The mean height of Grade III pupils is 138 cm with a standard deviation of 8 cm. If a sample of 30…

A: given data μ = 138σ = 8n = 30P(x¯ ≥140) = ?

Q: Find the standard deviation for the given data. Round your answer to one more decimal place than the…

A: Obtain mean of the sample data. Denote the values of the sample data by xi: xi: 223, 225, 300, 291,…

Q: The histogram on the right represents the connection time in seconds to an internet provider.…

A: Note:Hi there! Thank you for posting the questions. As there are several independent questions,…

Q: 12) Answer each question using the list below 123, 100, 111, 124, 132, 154, 132, 160 Mean = Median=…

A:

Q: Write one paragraph describing the data set using the information about the mean, mode, range,…

A: The mean of gross value added for the years is 90.5875 which mean the average gross value added for…

Q: Find the range and the standard deviation (correct to two decimal places). 80, 91, 94, 94, 101…

A: Formula: A) Range = Maximum value - Minimum value B)Standard deviation :

Q: days threy 23 of 28 find the mean? 438 264 find the Standard 73 15 totul 827

A:

Q: 68. The heights of the 430 National Basketball Association players were listed on team rosters at…

A: The question is about normal distribution.Given :Population mean height of basketball players (  ) =…

Q: Data table

A: Calculations for Height:

Q: Españ A biologist is studying rainbow trout that live in a certain river and she estimates their…

A:

Q: Find the range, the standard deviation, and the variance for the given samples. Round non-integer…

A: Given data, 49,65,99,53,80,81,60,95 and 75. Range: Range = Maximum observation -Minimum observation…

Q: Determine whether the graph shown could represent a variable with a normal distribution. Explain…

A: Given thatDetermine whether the graph shown could represent a variable with a normal distribution.…

Q: In a certain state, the recent average critical reading standardized test score was 540. Assume that…

A: P(X<500)=Pz<500-540100=P(z<-0.4)=0.3446=34.46% Therefore the correct option is A option.

Q: Find the range and standard deviation of the set of data.   77​,88​,1212​,1414​,1717​,2020

A: Solution: The range of the data is calculated as follows:

Q: The statistics below provide a summary of the distribution of heights, in inches, for a simpl random…

A: Firsti quartile (Q1) value interprets that, 25% of the data lie below Q1 value and 75% of the data…

Q: aul received a score of 70 on a history test for which the class meam ass? biology test O history…

A: Concept: A z-score is known as the standard score that determines how much the data point deviates…

Q: A distance is measured as 27.3 inches and 15.6 inches with the standard deviation (error) of 0.16…

A: Given information- We have given the mean and the standard deviation. E(X) = 27.3 inches E(Y) = 15.6…

Q: Find the range and the standard deviation (correct to two decimal places). 85, 95, 101, 101, 103…

A:

Q: In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores…

A: Given that,The middle 68% of the scores fall between 77 and 93.

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1983 votes per district…

A: Solution: We have, X = number of votes for President Clinton for an election district.  X ~ N(1983,…

Q: A scientist wishes to estimate the average depth of a river. He wants to be 99% confident that the…

A:

Q: The heights of adult women in the US are normally distributed with a mean of 64 inches and a…

A: Solution: Let the random variable X denotes the height of an adult woman in the U.S. It is given…

Q: Find the standard Deviation, Round your answer to the nearest tenth as needed 18,19,15, 20, 10, 6,…

A:

Q: Reading Improvement Program To help students improve the is to be administered to the bottom 6% of…

A: Given Information: Mean μ=124.4 Standard deviation σ=23 Reading program is to be administered to the…

Q: The frequency distribution in the table represents the square footage of a random sample of 510…

A: Square FootageFrequency0 - 4996500 - 999181000 - 1499351500 - 19991232000 - 24991192500 - 2999773000…

Q: andard deviation of 13.3. Complete parts (a) ugh (d) ) Consider the hypotheses H₂ = 101 versus H,…

A:

Q: The mean amount of time it takes a kidney stone to pass is 16 days and the standard deviation is 5…

A: Given that  The mean amount of time it takes a kidney stone to pass is 16 days. (μ)=16 Standard…

Q: Lengths of pregnancies are normally distributed with a mean of 265 days and a standard deviation of…

A: Obtain the length of the pregnancy that separates the premature babies from those that are not…

Q: Find the range, the standard deviation, and the variance for the given samples. Round non-integer…

A: