The IQ Test is supposed to have a mean of 100 and a standard deviation of 15 Which statements are true Most people scored above 100 on the IQ test Less than 5% of the students scored above 130 About 3/4 of the people score between 85 and 115 An IQ of 98 is below average

Q: IQ scores are measured with a test designed so that the mean is 113 and the standard deviation is…

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Q: IQ scores are normally distributed with a mean of 67 and a standard deviation of 6. Find out the…

A: Given: X: IQ Scores

Q: Supposed the Mean percentage in algebra shoe is 70% and the standard deviation is 8% what percentage…

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Q: In a class of 50 students of Mr Ramos in the subject Calculus, the result of their quiz shows that…

A: given data N = 50μ= 78σ= 6.58carlos : 82Julia : 75how many students did carlos surpassed?n(x<82)…

Q: The results of a common standardized test used in psychology research is designed so that the…

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Q: there are 300,000 people review  for the movie  pupulation mean is 7.2 stars and standard deviation…

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Q: Show and explain all steps in calculating the mean and standard deviation of the data set assigned…

A: The question is about descriptive statistics Given data : To explain : 1 ) importance of dividing…

Q: Which bird is faster: Flamingos or peacocks? A study was done to estimate the true mean difference…

A: We have to find the confidence interval for difference in the mean running speed for all flamingos…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: It is given that the mean and standard deviation are 145 and 30.

Q: Suppose you have a test with a mean of 66 and a standard deviation of 5. If you first increase…

A: Given Mean =66 Standard deviation=5

Q: Suppose that IQ scores have a bell shaped distribution with a mean of 101 and a standard deviation…

A: The IQ scores have a bell shaped distribution with a mean of 101 and a standard deviation of 17.

Q: The mean number of English courses taken in a two-year time period by male and female college…

A: Given: The mean number of English courses taken in a two-year time period by male and female college…

Q: is 80 a suspect outlier

A: Here given,  One indicator of an outlier is that an observation is more than 2.5 standard deviations…

Q: Find the proportion of scores greater than 70 mean is 90 standard deviation is 10

A: The standard normal distribution:A continuous random variable Z is said to follow standard normal…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Consider X be a random variable which follows normal distribution indicating the score earned on a…

Q: 84 Students Who Took The Achievement Test Last Oct. 2020 If the mean is 88, S = 2.50 How Many…

A: Answer - Given, Sample size n = 84 and the mean is μ = 88, S = 2.50                 How Many…

Q: the scores from the MCAT exam are normally distributed with a mean of 500.5 and standard deviation…

A: Given that: Population mean, μ=500.5 Population standard deviation, σ=10.5

Q: The first statistics exam had a mean of 66 and a standard deviation of 13 ​points; the second had a…

A: The objective of this question is to calculate the z-scores for Anna and Megan on both exams and…

Q: Please help me with both questions. These are just 2 and you are allowed to answer 3. Please help me…

A: 19)

Q: Explain the relevance of mean and standard deviation to someone who does not know what they are. .…

A: Mean: The mean is a measure of central tendency. It gives an indication of the average value of a…

Q: A positive z-score indicates that the score or value is below the mean. True or False

A: We want to tell you above statement is true or false

Q: How do I figure out snowfall is 98 inches per year and the standard deviation is 25 inches.  What…

A: We have to find percentage of the time does the city receive less than 125 inches.

Q: Liz has applied to a college that requires students to score in the top 6.7% on the Mathematics…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: Your height in inches is compared to the people in this class, and your deviation is -1.  What does…

A: Here we have given the question about mean of the heights. Given, Your height in inches is compared…

Q: What method would you use to approximate the percent of women who lie within 2 standard deviations…

A: Given that,   Number of movies(x) frequency(f) f*x 20 25 500 21 10 210…

Q: A test score of 65 on a test having a mean of 72 and a standard deviation of 9. Determine if the…

A: From the provided information, Mean (µ) = 72 Standard deviation (σ) = 9 X~N (72, 9)

Q: What is the mean absolute deviation of 1, 5, 8, & 10? Show your solution

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Q: The mean IQ is 100 and the standard deviation is 15. What percentage of people fall between the IQs…

A: given  data, μ=100σ=15we have to find out the percentage of people

Q: An IQ test has a mean of 100 and a standard deviation of 15. An elite engineering company wants to…

A: Let X be the IQ test score of engineer. The mean is μ=100. And a standard deviation σ=15. Assume…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 105 and a standard…

A: It is given that the mean is 105 and standard deviation is 15.

Q: Give two sets of five numbers that have the same standard deviation but different means. Oset1: 2,…

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Q: The mean score on a driving exam for a group of driver's education students is 64 points, with a…

A: Mean()=64standard deviation()=3k=2

Q: IQ scores are measured with a test designed so that the mean is 114 and the standard deviation is…

A: Given information Mean µ = 114 Standard deviation σ = 14 The z scores that are unusual are Z < -2…

Q: 9. mean = 676; standard deviation = 60 Page

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Q: The results of a common standardized test used in psychology research is designed so that the…

A: Given:Mean (µ) = 115Standard devition (σ) = 40X~N (115, 40)A subject earns a score of 59.

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Given Information: Population mean (u) = 165  Standard deviation (σ) = 10  Score earned by a subject…

Q: This problem is fill in the blank. Just choose the correct answers. Thank you for your help   A…

A: Hypothesis: A statement or assertion about a population parameter is known as Hypothesis. Null…