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.
Q: If these data are converted to deviation scores, the last value (15) would have a value of Y 2 9 11…
A: Solution: The mean of Y is
Q: For this set of data, the standard deviation (s) is equal to: 9, 8, 10, 5, 5, 2, 3, 6, 3
A: Mean:The formula for finding mean is shown below:
Q: Assume the average (mean) number of minutes a group of people meditate is 20 minute per day and has…
A: Solution: Let X : A group of people mediate. Assumed X be the normal distribution with mean 20…
Q: In a college class, the average IQ is 115. Assume that the distribution is normal and that the…
A: In a college class, the average IQ is 115. Assume that the distribution is normal and that the…
Q: The mean is u: = and the standard deviation is o: =
A: Given,
Q: for this set of data, the standard deviation is equal to: 9,8,10,5,5,2,3,6,3
A: Mean:The formula for finding mean is shown below:
Q: On a nationwide math test, the mean was 60 and the standard deviation was 7. If Roberto scored 90,…
A:
Q: The length of life of 220 incandescent 60-watt lamps was obtained and yielded the frequency…
A: Cumulative frequency: It can be calculated by adding the frequency of the first class interval to…
Q: Find the Z-Score for a IQ test score of 142 when the mean is 100 and the standard deviation is 15.
A: It is given that the mean and standard deviation are 100 and 15, respectively. The IQ test score is…
Q: According to Chebyshev's rule, within 10 standard deviations from the mean, lies at least of any…
A: Given Information: According to Chebyshev's rule, within 10 standard deviations from the mean, lies…
Q: can you find the mean and standard deviation?
A: Let the male data set is denoted by x, then the mean is given by the formula x¯=∑xxn. Where, the…
Q: find the z-score for the value 69, when the mean is 96 and the standard deviation is 5.
A:
Q: Find the z-score for the value 55, when the mean is 79 and the standard deviation is 5.
A: The z score indicates how many standard deviations that a data points away from the mean. It can be…
Q: According to Chebyshev's rule, within 10 standard deviations from the mean, lies at least_ data of…
A: According to Chebyshev's rule, within 10 standard deviations from mean, lies at least 99% of the…
Q: On a nationwide math test, the mean was 63 and the standard deviation was 10. If Roberto scored 85,…
A: GivenMean(μ)=63standard deviation(σ)=10score(x)=85
Q: find the z-score for the value 95, when the mean is 77 and the standard deviation is 2.
A: Given, mean=77 standard deviation=2 find the z-score for the value 95
Q: In a population with mean 50 what standard deviation score would have a score of X=45
A:
Q: On a nationwide math test, the mean was 69 and the standard deviation was 7. If Roberto scored 80,…
A: Given,mean (μ)=69standard deviation (σ)=7andRoberto score(X)=80
Q: Suppose you were told you scored two standard deviation below the mean on a measure where the main…
A:
Q: A quantitative data set has size 40. At least how many observations lie within two standard…
A: Introduction: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then,…
Q: the data set has a size 50, how many observations lie within 2 standard deviations of the mean
A: From the provided information, Sample size (n) = 50 The observations lie within 2 standard…
Q: The data set has size 50. Approximately how many observations lie within one standard deviation to…
A:
Q: 95% of 80 night students scored between 70% and 80% on a quiz. If this data is normally distributed,…
A: Given: Total number of students n=80. let X denote the marks of students then, X ~N(µ,…
Q: What was the cutoff for a failing score? Approximately what percentage of the students failed?
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A: Given: The mean score of a Science test is μ=42. The standard deviation is σ=5. Let X be a random…
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A: Given X=65μ=60σ=6
Q: An instructor in a large lecture class found, at the end of the semester, that the total point…
A: Given Data: Let X represent the total point distribution Mean=530 Standard deviation=80 X~…
Q: Find the range and standard deviation for the data items in the histogram below. 5 4 Frequency
A: From the histogram, The frequency table is, Data Frequency 10-20 2 20-30 5 30-40 5 40-50…
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A: We have to find given percentile ....
Q: Hello, how do you calculate this? Thank You!
A: Compute the 90% confidence interval for the population mean.Since the sample size is small and the…
Q: On a nationwide math test, the mean was 57 and the standard deviation was 4. If Roberto scored 90,…
A: Formula for z-score is
Q: A quantitative data set has a size of 50. At least how many observations lie within seven standard…
A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…
Q: THE SCORES ON THE SAT MATH HAD A MEAN OF 431 AND A STANDARD DEVIATION OF 117. What percent of…
A:
Q: A quantitative data set has size 50. At least how many observations lie within three standard…
A: The size of the data set is 50.
Q: The data set has size 90. Approximately how many observations lie within two standard deviations…
A: The Empirical Rule states that 99.7% of data observed following a normal distribution lies within 3…
Q: Can you find the mean and the standard deviation?
A: To find the mean and standard deviation of the given data: Mean is the sum of observations divided…
Q: The data set has size 40. Approximately how many observations lie within two standard deviations to…
A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…
Q: Find the mean and standard deviation
A: Uniform Distribution : The uniform distribution is a type of continuous probability distribution…
Q: In a science test, the mean score is 42 and the standard deviation is 5. Assuming the scores are…
A: (a) Obtain the percent of score is greater than 48. The percent of score is greater than 48 is…
Q: In the given graph, What is the mean and standard deviation?
A:
Q: Find the z-score for the value 80, when the mean is 70 and the standard deviation is 2.
A:
Q: Find the z-score when x is 5, mean equals 7, and standard deviation 3.
A: Solution: Let X be the random variable. Then, the z-score is calculated by using the formula
Q: A successful basketball player has a height of 6 feet 77inches, or 201201 cm. Based on statistics…
A: Given information- Height of a player = 201 cm Z-score = 3.743 We know that standard height is given…
Q: The coefficient of variation for a data set is the mean divided by the standard deviation, expressed…
A: The provided statement is "False".
Q: On the final exam, your friend scored a 93 and you scored a 85. The scores are normally distributed…
A: Obtain the Z-score for the random variable X equals 85. The Z-score for the random variable X equals…
Q: A quantitative data set has size 60. At least how many observations lie within three standard…
A:
Q: A successful basketball player has a height of 6 feet 3 inches, or 191 cm. Based on statistics from…
A: Given,a basketball player has a height of 6 feet 3 inchesand the Z-score =2.31
Q: The variance in a data set is 427. Find the standard deviation. Round to two decimals.
A: The random variable is X. It is given that the variance is 427. We have to find the standard…
Q: What are all the values that standard deviation "s" can possibly take?
A: Standard deviation S=x1;x2n-1and ,Standard deviation is the positive squarew root of the variance…
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