n = 11 Ex=55 Ex²=2230 Give the value of the sample standard deviation.
Q: Find the IQ Score. IQ score 0.3446 Distributed with a mean of 100 and a standard deviation of 15.…
A: Given DataMean = 100Standard deviation = 15Probability of IQ score of adults = 0.3446
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A: Given : No. of students : Sample size (n) = 1000 Let X : Scores in aptitude test in mathematics…
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A: We have given that, Mean = 82 , standard deviation σ = 6 sample size n = 37 Standard error of the…
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Q: The population mean is 75 and the population standard deviation = 6. Random samples (containing 16…
A: Given , The population mean ( n ) = 75 , the population standard deviation ( σ )= 6
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A: Given data 0,0,1,1,2,4
Q: Find the sample standard deviation. The top five scores on last semesters midterms were 90 97 100 90…
A: The question is about measures Given : Data - 90, 97, 100, 90, 93 To find : Sample std. deviation
Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…
A: Excel formula: =NORMINV(0.305,0,1)=-0.5100
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A:
Q: Please help him by finding the standard error of the mean for these data.
A: To find the standard error of the mean.Given that,
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A: Given information: The mean of the distribution is 14 and the standard deviation is 5. Formula for…
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A: From the provided information, Mean (µ) = 61 Standard deviation (σ) = 16 X~N (61, 16)
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A: Variance of population=S2=6, Sample size=228
Q: What is the corresponding Z score ? Mean is 70, standard deviation is 10 and X= 89
A: We have to find z score.
Q: The variance of a sample of 99 observations equals 81. The standard deviation of the sample equals?
A: From the provided information, The sample variance of 99 observations (s2) = 81
Q: Determine the sample standard deviation.
A: Given 29.6 32.4 38.7 42.4 44.5 46.4 49.0 60.8 70.2 Now sample size (n) = 9…
Q: The mean of a test is 400 and the standard deviation is 75. It is normally distributed. A sample of…
A: 1] Mean μ=400 2] standard deviation σ=75 3] n=25 4] μx¯=400σx¯=σn=7525=15
Q: The variance of a population is 8. the size of the sample collected from a population is 328 What is…
A: Answer: From the given data, Variance (σ2) = 8 Sample size(n) = 328
Q: The mean deviation of the data(1 * :2,9,9,3,6,9,4 from the mean is 2.23 3.23 O 2.57 O 3.57 O
A:
Q: During the first day of classes for the second semester, the Statistics and Probability teacher of…
A: Answer : - Given data sample size n = 100 Sample mean x = 80.68, Population…
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Q: In a normal distribution, mean is 60 and standard deviation is 5. How many of the cases have scores…
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Q: What level of measurement do the variance and standard deviation assume?
A: Variance and standard Deviation tells about the spread or variation in the dataWe calculate the…
Q: What are the best ways to find the standard deviation?
A: Standard deviation is a measure of variability. It describes how far the data falls from the…
Q: How does one calculate the standard deviation?
A:
Q: Find z score Xbar= 20 ,mean= 40 , standard deviation = 10
A: Given that Xbar= 20 mean= 40 standard deviation = 10 We have to find z score:
Q: Calculate the sample standard deviation using the given sample data n= 84, Sum of squares (SS) =…
A: Answer: From the given data, Sample size (n) = 84 Sum of Squares (SS) = 116
Q: A normal population has mean u = 55 and standard deviation o = 9. What is the 84th percentile of the…
A: Given that mean u = 55 and standard deviation o = 9.
Q: The Psych 230 students finished the course with a total population mean of 130 points and the…
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Q: Q3 :- :- if you know the standard deviation = 3 for measured data, what is the variance ?
A: Given in question Standard deviation = 3
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Q: The amount of time people spend at the gym follows a uniform distribution from 45 to 90 minutes.…
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Q: scores on an english test are normally distributed with a mean of 31.5 and a standard deviation of…
A: X follows a Normal distribution with mean = 31.5 and S.D = 6.9 Then z=(x-mean)/SD = (x-31.5)/6.9…
Q: The variance of a population is 5. The size of the sample collected from a population is 225. What…
A: Answer: From the given data, Variance (σ2) = 5 ⇒Standard deviation (σ) = Variance = 5…
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A: It is given that the heights of Ukranian women follows normal distribution with mean 71 inches and…
Q: Scores on the SAT test have a mean of 1518 and a standard deviation of 325. If 100 students are…
A: Scores on the SAT test have a mean of 1518 and a standard deviation of 325.
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- sample of 8 students scored the following grades: 20, 40, 35, 30, 57, 57, 46, 42. Find the sample mean, mode and median. OCompute the standard deviation.Calculate the z-score for the largest value and interpret it in terms of standard deviations. Do the same for the smallest value N: 50 Mean:28.766 SE Mean: 0.476 St.Dev: 3.369 Min: 21.300 Q1: 26.375 Median: 29.400 Q3: 31.150 Max: 35.100The quartile deviation of the number of computers fixed per day is 5. Interpret this value. What does this value (5) mean?
- The heart rate of humans are normally distributed with a mean of 90.3 bpm and std. dev. of 7.3 bpm. What are the heartbeats that separate the lower 25% from the rest and the upper 20% from the rest?boulder 10k race was 1.78 standard deviations faster than women's average group. 405 women ran , assuming normal distribution, how many women ran faster than joan?The difference in the population means divided by the population standard deviation of a study is the blank?
- How do I use Excel to calculate the SAMPLE STD DEVIATION of a column?A simple random sample of 36 observations was taken from a large population. The sample mean and the standard deviation was determined to be 80 and 12 respectively. What is the standard error of the mean?Find the variance and the standard deviation for the following numbers: 1, 5, 6, 8. Show all your work. Do not simplify fractions/products/similar.
- Airplane seats have widthts with a mean of 22.0 inches and a standard deviation of 1.8 inches. Find the z-score of an airplane seat 19.9 inches wide. (to 2 decimal places)Use sample standard deviation formula to find the standard deviation of these BMI’s: 33.3, 28, 45.4, 28.4 and 25.9.For the Given values of 56, 67.9, 68, 53.8 and 69.8, Calculate 1 Mean 2Algebraic Sum of deviation 3 Variance 4 Standard Deviation.