Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 17. Using the empirical rule, what percentage of IQ scores are no more than 46? Please do not round your answer

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A: Sample size = n = 152   Mean = 74  Standard deviation = 6

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Q: Suppose the exam average in a class is 72% with a standard deviation of 3. What proportion of…

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Q: An IQ exam has a mean of 110 and a standard deviation of 12. What percent of people have an IQ score…

A: Given mean= 110 Standard deviation=12 We know that Z=X-mean/standard deviation

Q: In 1955, Life Magazine reported that a 25-year-old mother of three worked, on average, an 80 hour…

A: From the provided information, Sample size (n) = 71 Sample mean (x̅) = 83 Sample standard deviation…

Q: of thirty students IQ scores have a mean score of 112.5. Is there sufficient evidence to support the…

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Q: if an approxemitly  bell shaped distribution has a mean of 30 and standard deviation of 5, what…

A: Given that  X~N( μ = 30 , ? = 5 ) μ = 30 , ? = 5 Formula for Z-score Z-score =( x - μ )/?

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A: A single number that seeks to represent a set of data by identifying the center position within that…

Q: The IQ test has a mean of 100 and a standard deviation of 15.  Suppose a simple random sample of 150…

A: Ans - Given, The IQ test has a mean μ = 100 and a standard deviation of σ = 15.  Suppose a simple…

Q: Scores on a recent national statistics exam were normally distributed with a mean of 80 and standard…

A: Obtain the standard z-score for X equals 89 The standard z-score for X equals 89 is obtained below:…

Q: What value lies under a standard score of 1.5 in a distribution having a mean of 55 and standard…

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Q: Suppose ACT Reading scores are normally distributed with

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A: Given: Population Mean μ = 2665 Population Standard deviation σ = 1344   Formula Used: Z-score =…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation…

A: Solution According to the Empirical rule.

Q: The number of assists per match for the setter on your school's volleyball team has a mean of 55 and…

A: Given,   Mean(μ) =55 Standard deviation(σ)=7

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

A:

Q: Suppose the average golfer drives the ball around 259.1 yards with a standard deviation of 9.73.…

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Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.11 and a…

A: It is given that the mean is 8.11 and the standard deviation is 1.46.

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A:

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation…

A: Given, Mean, mu= 104 Standard deviation, sigma= 17 We know that,  Z score= (X-mu)/sigma

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A: Given,mean(μ)=70standard deviation(σ)=12

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Q: The standard deviation on a final examination was 9, while the mean grade was 72. The best 14% of…

A: GivenMean(μ)=72standard deviation(σ)=9

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation…

A:

Q: A positively skewed population has a mean of μ= 150 and a standard deviation of σ= 10. What is the…

A: Solution: From the given information, µ = 150 and σ = 10.

Q: Suppose that IQ scores have a bell shape distribution with a mean of 105 and a standard deviation at…

A: Solution: Let X represent the IQ scores of students.  The distribution of X is bell shape…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

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Q: Describe  the scores in a sample  that has a standard  deviation of zero

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Q: A standardized measure of achievement motivation is normally distributed, with a mean of 35 and a…

A: it is normally distributed with mean = 35 and sd = 14

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Q: Assuming that the heights of college women are normally distributed with a mean of 62 inches and…

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Q: What is the z score for 120 when mean is 100 and standard deviation is 5.

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Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 96 and a standard deviation of…

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Q: Calculate the standard deviation for the data set below: 1, 3, 4. 5, 6, 9, 12, 16 (X-Mean) (X-Mean)?…

A: According to the problem,we have

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