Homework Answers
The value of Kelly's BP = 300 + (1.3*50) = 365
Assuming the score distribution is normal, we can say
The percent of students have a BP higher than Kelly
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The mean Bench Press (BP) is 300 pounds. The standard deviation is 50 pounds. Kelly scored...
David scored 942 on a standardized achievement test. The mean test score was 850 with a...
David scored 942 on a standardized achievement test. The mean test score was 850 with a standard deviation of 100. Assuming that the distribution of test scores was normal,and using Table 8.1, what percent of students scored higher than David?
0/2 pts Question 3 On a certain standardized test . The mean is 54 .The standard deviation is 10 .Scores are whole numbers . Connie scored 34 Find numbers a and c such that Connie scored higher than...
0/2 pts Question 3 On a certain standardized test . The mean is 54 .The standard deviation is 10 .Scores are whole numbers . Connie scored 34 Find numbers a and c such that Connie scored higher than approximately 100-d' (a) percent of people who took the test. Make a continuity correction. What is 100c a? Correct Answer 101.95
0/2 pts Question 3 On a certain standardized test . The mean is 54 .The standard deviation is 10 .Scores are...
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what...
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what percent of data is within 1 standard deviation of the mean? B: About what percent of data is within the mean and 2 standard deviations above the mean? C: About what percent of data is more than 2 standard deviations above the mean? Question 12 The scores on a test by a large class are normally distributed. The mean score is 72 with a...
Question A college football coach thought that his players could bench press a mean weight of...
Question A college football coach thought that his players could bench press a mean weight of 275 pounds. It is known that the standard deviation is 55 pounds. A few players thought that the mean weight was less than 275 pounds, so they conducted a hypothesis test. They asked 30 of their teammates for their estimated maximum lift on the bench press exercise and the mean weight was 260 pounds. Which choice shows the correct first three steps to performing...
SAT scores are normally distributed, with a mean of 500 and a standard deviation of 100....
SAT scores are normally distributed, with a mean of 500 and a standard deviation of 100. Xiomara took the SAT and scored 650. 8) Based on this information, Xiomara’s score was equal to or higher than what percentage of the other students?
On a measure with a mean of 10 and a standard deviation of 2, Sumathi scored...
On a measure with a mean of 10 and a standard deviation of 2, Sumathi scored 13. What proportion of people score farther from the mean than Sumathi? (Give your answer to at least 3 places past the decimal point) The answer is not 0.0668
Consider a population of 300 with a mean of 50 and a standard deviation equal to...
Consider a population of 300 with a mean of 50 and a standard deviation equal to 22. What is the probability of obtaining a sample mean of 52 or less from a sample of 40?
A z score of 1.25 represents an observation that is a) 1.25 standard deviation below the...
A z score of 1.25 represents an observation that is a) 1.25 standard deviation below the mean. b) 0.25 standard deviations above the mean of 1. c) 1.25 standard deviations above the mean. d) both b and c Assume that your class took an exam last week and the mean and standard deviation of the exam were 85 and 5, respectively. Your instructor told you that 30 percent of the students had a score of 90 or above. You would...
On a measure with a mean of 10 and a standard deviation of 2, Sumathi scored...
On a measure with a mean of 10 and a standard deviation of 2, Sumathi scored 13. What proportion of people score farther from the mean than Sumathi? (Give your answer to at least 3 places past the decimal point) Answers are not: 0.067, 0.433, 0.933, 0.0668 Help! Please and thank you!
Consider a population of 300 with a mean of 50 and a standard deviation equal to...
Consider a population of 300 with a mean of 50 and a standard deviation equal to 29 What is the probability of obtaining a sample mean of 53 or less from a sample of 45? What is the probability of obtaining a sample mean of 53 or less from a sample of 45? P(`x≤53)=_
0/2 pts Question 3 On a certain standardized test . The mean is 54 .The standard deviation is 10 .Scores are whole numbers . Connie scored 34 Find numbers a and c such that Connie scored higher than approximately 100-d' (a) percent of people who took the test. Make a continuity correction. What is 100c a? Correct Answer 101.95
0/2 pts Question 3 On a certain standardized test . The mean is 54 .The standard deviation is 10 .Scores are...
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what percent of data is within 1 standard deviation of the mean? B: About what percent of data is within the mean and 2 standard deviations above the mean? C: About what percent of data is more than 2 standard deviations above the mean? Question 12 The scores on a test by a large class are normally distributed. The mean score is 72 with a...
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