Find the standard deviation of the given data rounded to the nearest hundredth. 3, 4, 5, 7, 10, 12, 15 Σ (x - mean)2 n 0 = 0 = [?]
Q: Assume that X is normally distributed with a mean of 12 and a standard deviation of 2. Determine…
A: From the provided information, Mean (µ) = 12 Standard deviation (σ) = 2
Q: standard deviation is s = 13.6 beats per minute. a. What is the difference between the pulse rate of…
A: HERE GIVEN Mean=X¯=77 Beats S=13.6 Beats
Q: A population of scores has μ = 25 and σ = 1. If 3 points are added to every score in the population,…
A: From the given information, Consider , X be the random variable which denotes the scores. Ex=μ=28σ=1…
Q: A sample has a mean of M =75 and a standard deviation of s = 15 . Find the z-score for each of the…
A: Given that, Mean (M) =75 Standard deviation (s) = 15
Q: The following data are the distances from the workplace (in miles) for the 5 employees of a small…
A: The distances from the workplace (in miles) for the 5 employees of a small business are given as:…
Q: What is the z-score of x = 72, if it is 1.1 standard deviations to the left of the mean? Answer to…
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Q: A population of scores has mean 80. in this population, a score of X= 86 corresponds to z= +2. what…
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Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…
A: Let X be IQ score from normal distribution with mean (μ) = 100 and standard deviation (σ) = 15
Q: A set of data items is normally distributed with a mean of 900 and a standard deviation of 30. Find…
A: The data item is normally distributed with Mean, m = 900 Standard deviation, s = 30 Then,…
Q: In a country, the mean time served by prisoners released from prison for the first time is 31.5…
A: Mean time = 31.5Standard deviation = 16.3
Q: Can you find the standard deviation for sx and sy?
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Q: Which of the following is always true? A. standard deviation can be less than 0 B. coefficient…
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Q: Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of…
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Q: a. What is the difference between carrier's highest data speed and the mean of all 50 data speeds?…
A: Here Given Highest Speed measured=76.6 Mbps Sample Size=50 Sample mean=x¯=18.68 Sample sd= s= 37.17…
Q: A set of data items is normally distributed with a mean of 200 and a standard deviation of 50. Find…
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Q: If X N(49, 16), then the standard deviation of X equals
A: It is given that, X~N49,16. This, means that, the the random variable X follows a normal…
Q: Suppose I collect test data from two different tests, History and Calculus. Suppose the history…
A: Obtain the Z-score for the History class test.Consider the values of history test be denoted by xi,…
Q: the average grade is 84 with a standard deviation of 4. What is each grade for -1 2 0 1.5 -1.25
A: Given Mean μ=84Standard deviation σ=4 The formula for Z score isZ=X-μσX=Z×σ+μ
Q: Suppose samples of size 100 are drawn randomly from a normal population that has a mean of 20 and a…
A: It is given that, a normal population that has a mean of 20 and a standard deviation of 5 i.e.…
Q: Assume that Math test scores are normally distributed with a mean of 200 and a standard deviation of…
A: The provided information is The mean and standard deviation is µ=200 σ=40 P(X<120)=?…
Q: One of the z-score formulas will help on this question. Scores on the SAT test are normally…
A: Given X ~ N (500, 100) P(Z<x -μσ) = PZ<700-50010 = P(Z<20)…
Q: A sample consists of the following n = 6 scores: -2, 3, -3, 1, -3, 4 Transform the distribution so…
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Q: Suppose baby kittens' weights have a mean of 11.6 and a standard deviation of 1.5. The z-score tells…
A: Ans#- Given, Mean μ = 11.6 and Standard deviation σ = 1.5 Use formula z = x - μσ…
Q: Scores had a Mean of 82 and a Standard Deviation of 5 0. Find a z score for x =81 and x = 68 Z-…
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Q: Find the scores one, two, and three standard deviations above and below the mean, given the…
A: Given that μ = 86.1 , σ = 12.5 Find the score
Q: A population has a mean u = 81 and a standard deviation o 36. Find the mean and standard deviation…
A: Given that, A population has mean μ=81 and standard deviation σ=36. Sample size n=81
Q: Suppose that for the past several decades, daily precipitation in Seattle, Washington has had a mean…
A: Power of the test is the probability of rejecting null hypothesis when the null hypothesis is false.…
Q: A sample has a mean of M=60 and a standard deviation of s=7. For this sample, find the z-score for…
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Q: a population of scores has u=44. in this population a score of x=40 corresponds to z = -1.00. What…
A: We have given that, Population mean (u) = 44, raw score of population (X) = 40 and z- score = -1. 00…
Q: Suppose the mean and standard deviation of the GPAs at school are Xbar = 1.487; and s = 1.332…
A: Given: Let X be the random variable denoting the GPA of every student. and GPAs are normally…
Q: Which of the following statements is NOT correct about effects of scale changes for a data set? O a.…
A: As a general rule, Standard deviation and Variance will remain the same when we add a constant value…
Q: A fitness center bought a new exercise machine called the Mountain Climber. They decided to keep…
A: Given Information : A fitness center bought a new exercise machine called the Mountain Climber.…
Q: Which of the following samples would have the largest standard error of the mean
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- One of the z-score formulas will help on this question. Scores on the SAT test are normally distributed with a mean of 500 and standard deviation of 100 points. Pretend someone scored 400 on the math portion of the SAT test. What would be the z-score cut off for this score? A. 1.0 B. -1.0 C. 0 D. 2.0Use the formula to find the standard error of the distribution of differences in sample means, x⎯⎯1−x⎯⎯2x¯1-x¯2.Samples of size 100 from Population 1 with mean 95 and standard deviation 10 and samples of size 80 from Population 2 with mean 76 and standard deviation 17Round your answer for the standard error to two decimal places.standard error =The following table shows the number of people that have either 0, 1, 2 or 3 cars registered in their name, from a sample of 311 people. x n 0 93 1 91 2 60 3 67 (a) Find the mean number of cars owned for this sample. Give your answer to at least 2 decimal places. (b) Find the standard deviation of cars owned for this sample. Give your answer to at least 2 decimal places.
- Use the formula to find the standard error of the distribution of differences in sample means, x⎯⎯1−x⎯⎯2x¯1-x¯2.Samples of size 40 from Population 1 with mean 3.7 and standard deviation 1.9 and samples of size 40 from Population 2 with mean 1.9 and standard deviation 1.2Round your answer for the standard error to two decimal places.standard error = Enter your answer in accordance to the question statementS Find the mean deviation about the median for the following d 3, 9, 5, 3, 12, 10, 18, 4, 7, 19, 21.Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P15, the 15th percentile. This is the bone density score separating the bottom 15% from the top 85%. How to get and what is the bone density score corresponding to P15 is ?
- n=16 mean number of television per household is 4 with a standard deviation of 1 television. using chebychev's theorem, detemine at least how many households have between 2 and 6 television.Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 3/2 Click to view page 1 of the table, Click to view page 2 of the table. pr 0.55 =/2 pr /2 or The indicated IQ score, x, is (Round to one decimal place as needed.) /2 /2 or 2 or on 2 on ? Enter your answer in the answer box.Which is NOT a correct statement about the variance and standard deviation? a. The standard deviation is the sqaure root of the variance b. The standard deviation is useful when considering how close the data are to the mean c. The variance is roughly the average sqaured distance from the mean d. None of above
- Suppose in 2000, the science scores for female students had a mean of 146 with a standard deviation of 35. Assume that these scores are normally distributed with the given mean and standard deviation. _________________ of the female students scored between 76 and 216Suppose baby kittens' weights are normally distributed with a mean of 11.4 and a standard deviation of 2.1. The Z-score tells you how many units above the average (if Z-score is positive) or below the average (if Z- Score is negative) any particular baby kitten's weight is. Find the baby kitten weight that corresponds to the following Z-scores. Use the formula Z where u is the mean, o is the standard deviation, and X is the baby kitten weight. a. Z = = 0.07, X = b. Z = 1.63, X =The following is a sample of sanitation scores for 20 cruise ships. Find the mean and standard deviation of the sanitation scores. 1. The mean of the sample data is (round your answer to 2 decimal places) 2. The standard deviation of the sample data is (round your answer to 2 decimal places) 3. Calculate the intervals x¯±s,x¯±2s,x¯±3s. (Round your answer to two decimal places) A. (x¯−s , x¯+s) = B. (x¯−2s , x¯+2s) = C. (x¯−3s , x¯+3s) =