Which variable below represents a categorical variable? Age IQ Occupation Score on your statistics test
Which variable below represents a categorical variable?
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Age |
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IQ |
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Occupation |
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Score on your statistics test |
Homework Answers
Categorical variables= Qualitative variable. Which takes names or label.
So, OCCUPATION
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Which variable below represents a categorical variable? Age IQ Occupation Score on your statistics test
1.92 Infections Can Lower IQ A headline in June 2015 proclaims "Infections can lower IQ."51 The...
1.92 Infections Can Lower IQ A headline in June 2015 proclaims "Infections can lower IQ."51 The headline is based on a study in which scientists gave an IQ test to Danish men at age 19. They also ana- lyzed the hospital records of the men and found that 35% of them had been in a hospital with an infec- tion such as an STI or a urinary tract infection. The average IQ score was lower for the men who had...
Which of the following is a categorical variable? Multiple Choice A. Age B. Zipcode C. Weight...
Which of the following is a categorical variable? Multiple Choice A. Age B. Zipcode C. Weight D. Height
Data Display Row IQ Score Mus.Apt. 1
Data Display Row IQ Score Mus.Apt. 1 95 30 2 106 37 3 110 35 4 104 28 5 98 17 6 114 45 7 123 33 8 100 18 9 98 24 10 88 18 11 102 30 12 105 30 13 111 32 14 106 33 15 ...
An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 90% confidence that the
An IQ test is designed so that the mean is 100 and the standard deviation is 13 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 90% confidence that the sample mean is within 4 IQ points of the true mean. Assume that σ=13 and determine the required sample size using technology. Then determine if this is a reasonable sample size for...
A person must score in the upper 2% of the population on an IQ test to...
A person must score in the upper 2% of the population on an IQ test to qualify for membership in Mensa, the international high-IQ society. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 10, what score must a person have to qualify for Mensa? Every day Cara runs for five miles. Suppose that the time it takes her to complete the run is a random variable that is normally distributed with a...
Descriptive Statistics Table 13 N Range Minimum Maximum Mean Std. Deviation Variance IQ 20 25 15 40 26.85 7.700 59.292 Driving Test Score 20 18 2 20...
Descriptive Statistics Table 13 N Range Minimum Maximum Mean Std. Deviation Variance IQ 20 25 15 40 26.85 7.700 59.292 Driving Test Score 20 18 2 20 10.45 5.453 29.734 age 20 6 19 25 21.05 1.820 3.313 Valid N (listwise) 20 Please show work so that I can follow along 13. Discuss what Table 13 indicates. (10 points)
3 value 10.00 points Stanford-Binet IQ Test scores are normally distributed with a mean score of...
3 value 10.00 points Stanford-Binet IQ Test scores are normally distributed with a mean score of 100 and a standard deviation of 15 (b) Write the equation that gives the z score corresponding to a Stanford-Binet IQ test score (c) Find the probability that a randomly selected person has an IQ test score. (Round your answers to 4 decimal places.) 1. P(x> 139) 2. P(x 80) 3. P(90 <x< 110) (d) Suppose you take the Stanford-Binet IQ Test and receive...
12 Suppose the mean IQ score of people in a certain country is 105. Suppose the...
12 Suppose the mean IQ score of people in a certain country is 105. Suppose the director of a college obtains a simple random sample of 40 students from that country and finds the mean IQ is 105 2 with a standard deviation of 13.7. Test the claim that the mean IQ score of people is more than 105 at the a = 0.05 level of significance. a. Write both null and alternative. Indicate the tail. b. Find test statistics...
Question 9 Background : Model for IQ Scores The distribution of IQ scores (for a particular...
Question 9 Background : Model for IQ Scores The distribution of IQ scores (for a particular age group) is approximately bell-shaped with a mean of 50 points and a standard deviation of 15 points. Question: One individual scored 68 points on this test. Which of the following is a correct statement about this individual's score? The individual scored 18 standard deviations above the mean score. The individual scored 18 standard deviations below the mean score. The individual scored 1.2...
Question Help An IQ test is designed so that the mean is 100 and the standard...
Question Help An IQ test is designed so that the mean is 100 and the standard deviation is 18 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 8 IQ points of the true mean. Assume that a = 18 and determine the required sample size using technology. Then determine if this is a...
1.92 Infections Can Lower IQ A headline in June 2015 proclaims "Infections can lower IQ."51 The headline is based on a study in which scientists gave an IQ test to Danish men at age 19. They also ana- lyzed the hospital records of the men and found that 35% of them had been in a hospital with an infec- tion such as an STI or a urinary tract infection. The average IQ score was lower for the men who had...
3 value 10.00 points Stanford-Binet IQ Test scores are normally distributed with a mean score of 100 and a standard deviation of 15 (b) Write the equation that gives the z score corresponding to a Stanford-Binet IQ test score (c) Find the probability that a randomly selected person has an IQ test score. (Round your answers to 4 decimal places.) 1. P(x> 139) 2. P(x 80) 3. P(90 <x< 110) (d) Suppose you take the Stanford-Binet IQ Test and receive...
12 Suppose the mean IQ score of people in a certain country is 105. Suppose the director of a college obtains a simple random sample of 40 students from that country and finds the mean IQ is 105 2 with a standard deviation of 13.7. Test the claim that the mean IQ score of people is more than 105 at the a = 0.05 level of significance. a. Write both null and alternative. Indicate the tail. b. Find test statistics...
Question Help An IQ test is designed so that the mean is 100 and the standard deviation is 18 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 8 IQ points of the true mean. Assume that a = 18 and determine the required sample size using technology. Then determine if this is a...
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