A population has mean 35 and standard deviationa-19. Find and o- for samples of sze 100. Round your answers to one decimal place if needed.

Q: the data set has size 50. Approximately how many observations lie within three standard deviation to…

A: Empirical rule (68-95-99.7 rule): Approximately 68% of data lies within the first standard…

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

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Q: In a departamental examination in  statistics given to 500 students, the mean score was 75 with a…

A: A z score tells us where score is lies on normal distribution curve. if z score is is zero is it…

Q: The mean of a data set is 20 and the standard deviation is 2. What percentage of data value will…

A: Given  Mean=20, sigma=2 P(12<X<28)= ?

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: Given that ; X represents the number of adults in groups of five who reported sleepwalking P(x) is…

Q: You are told that the mean for an exam was 73.29 with a standard deviation of 8.89.  Convert the…

A: Given that μ=73.29,σ=8.89 The z-score corresponding to 70.01 is, The z-score corresponding to 78.22…

Q: There are 15 numbers on a list, and the mean is 25. The smallest number on the list is changed from…

A: The numbers in the list is 15, the mean is 25 and the smallest number is changed from 12.9 to 1.29.

Q: If the variance of the data values in a population is 169, what is the standard deviation of the…

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Q: The mean and standard deviation of a population are 200 and 20, respectively. Suppose samples of…

A: We have given that, Population mean (μ) = 200, standard deviation (σ) = 20 and sample size (n) = 36…

Q: State the standard deviation of the numbers of taxi passengers to the nearest decimal place. 3 4…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: Seth asked a random sample of 20 students how much cash they had in their pocket. The following…

A: given data,n = 20here we have to find out the sample standard deviation for grouped data, x f fx…

Q: Suppose a population of individuals has a mean weight of 160 pounds, with a population standard…

A: Solution: Let X be the weight of individuals. From the given information, X follows normal…

Q: An engineer claims that the average weights of their products is 750 grams with population standare…

A: As per guideline only First question to be attempted. please repost thhe other questions. Step 1…

Q: A quantity surveyor was asked to study the weight of beef in a particular company. He measured 10…

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Q: 5. If a population has a standard deviation of 16, what is the minimum number of samples that need…

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Q: "The weights of 1,000 children, in average, is 58kg with standard deviation of 18kg. Suppose the…

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Q: Seth asked a random sample of 20 students how much cash they had in their pocket. The following…

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Q: "The weights of 1,000 children, in average, is 62kg with standard deviation of 16kg. Suppose the…

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Q: On a test the mean score is 25 and the standard deviation is 2.3.  Which score could be expected to…

A: Mean =25 s = 2.3 z-critical value at alpha 0.05 is 1.65

Q: The national mean for verbal scores on an exam was 428 and the standard deviation was 113.…

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Q: Test Score Frequency 90 80 4 70 60 6 50 3

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Q: If the coefficient of variation for a data is given as 35%, and the standard deviation for the same…

A: given data coefficient of variation = 35% so cv = 0.35 sd = 32 mean  = ?

Q: and symmetric with a mean of 160 pounds and a standard deviation of 30 pounds. What percent of the…

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Q: On average 16 customers are served per hour in a bank serving point. What is the mean and standard…

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Q: If the standard deviation of the data .S={5,20,a} is 15. Find the value of a

A: Given: SD=15.   Also, by the formula of standard deviation:SD=∑x-x2n-1

Q: Given the mean of GRE scores is 150 and the standard deviation is 8.8. What proportion of combined…

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Q: "The weights of 1,000 children, in average, is 58kg with standard deviation of 18kg. Suppose the…

A: Solution-: Given: μ=58,σ=18,n=1000 We find, how many children weight between 48kg and 57kg?

Q: Below are the ages of every resident of a very small assisted living facility. Find the standard…

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Q: If a distribution has a mean of 35 and a standard deviation of 5, what value would be +1.5 standard…

A: Given that The value of mean of 35, Standard distribution of 5 and that correspond s to a z-score of…

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score…

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Q: Suppose a population has a mean weight of 180 pounds and a standard deviation of 25 pounds. A sample…

A: We have to find standard error for given data.

Q: A biologist found the wingspans of a group of monary butterflies to be normally distributed with a…

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Q: "The weights of 1,000 children, in average, is 53kg with standard deviation of 11kg. Suppose the…

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Q: If a data value has a z-score of 3.00 and the mean of the distribution is 100 with a standard…

A: 1) Given data, z=3 μ=100 σ=15 X=?

Q: (d) If the mean score was u = 157 with standard deviation o = 19, what was the final exam score for…

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Q: Determine the class average if the standard deviation was 8% and Henry’s mark of 85% is equivalent…

A: Given that,  The standard deviation =8%, Marks of Henry's =85%, and z-score =1.30.

Q: If a student scored 77 points on a test where the mean score was 84.5 and the standard deviation was…

A: Solution: Let X be the score of a student. From the given information, X has a mean µ=84.5 and a…

Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

A: Given Information: Consider the given information: μ=116σ=14X~N116,14

Q: In a normal distribution of measurements having a mean of 495 feet and a standard deviation of 55…

A: Consider that X is a random variable defined as a measurement.Thus,

Q: If some data is symmetrical and unimodal, and the mean and standard deviation are 230 and 40…

A: If the data is symmetrical and unimodal, then it is normally distributed with mean, μ=230 and…

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: In question, Given that mu=50, Sigma= 8 and z score = -0.50 Then we'll find the value of raw score.…

Q: For the values 2, 4, 6 the standard deviation is O 1.36

A: Given: The values are: 2, 4, 6       To find: Standard Deviation = ?

Q: A data set is normally distributed with a mean of 6363 and a standard deviation of 10.4.10.4. What…

A: Let X be the data value which follows normal distribution with mean 63 and standard deviation 10.4.…

Q: the standard deviation of a sample of 50 observations equals 10. the variance of the sample equals?…

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Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

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Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

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Q: A quiz consists of 50 multiple choice questions, each with five possible answers, only one of which…

A: Given ,n = 50 P = 15 = 0.2

Q: Ronnie and Loida who are best friends took a college entrance examination. The mean score and the…

A: The z score is used to estimate the number of observation deviation from the mean. The z score is…

Q: A standardized test has a mean of 88 and a standard deviation of 12. What is the score at the 90th…

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Q: The mean life of a tire is 30,000 km. The standard deviation is 2000km. About 99.7% of all tires…

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