Is there any inconsistency in the statement. Case (i) when the mean of a binomial Gistribution is 40 and standard deviation is 4 ? Case (ii) when Mean = 40 and if no inconsistency is found, what shall be the values of p, a andn?
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Q: Is there any inconsistency in the statement "the Mean of a binomial distribution is 40 and its S.D.…
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Q: Is there any inconsistency in the statement. Case (i) when the mean of a binomial 'üstribution is 40…
A: Given : mean = np = 20 Standard deviation = np1-p = 4
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- Suppose the scores of students on an exam are normally distributed with a mean of 376 and a standard deviation of 30. Then approximately 95% of the exam scores lie between the integers _ & _ such that the mean is half way between these two integers. I know the answers are 316 and 436. But I don't know how they got them. I cannot use excel and so I need help to solve this by hand. Thanks so much in advance!Suppose that average male weight in the US is 175 pounds with a standard deviation of 25 pounds. Suppose you randomly select 1,000 male Americans and ask their weight, and average the 1,000 numbers to compute a sample mean X. a) What does the law of large numbers tell you about X, the average of the 1,000? Be precise in your answer using about 1 to 3 sentences.Suppose that you have a set of data that has a mean of 34 and a standard deviation of 6. a) Is the point 28 above, below, or the same as the mean. How many standard deviations is 28 from the mean. b) Is the point 46 above, below, or the same as the mean. How many standard deviations is 46 from the mean. c) Is the point 43 above, below, or the same as the mean. How many standard deviations is 43 from the mean. d) Is the point 20 above, below, or the same as the mean. How many standard deviations is 20 from the mean.
- Please help!Q4) Data of 100 students' score was recorded. The arithmetic mean and standard deviation were 60 and 15 respectively. After checking, it was found that there was an error recording the scores of 2 students. The incorrect scores were 27 and 40, while the :correct scores were 72 and 45. Thus * إجابتك :Q4) a) The correct arithmetic mean is 59.25 O 60.5 61.25 O none of all above OIndicate whether the following sentences are true or false: (T/F) 10-Researchers only need to know how to develop certain tests, how to calculate the mean, the mode, the median or the standard deviation or chi-square, how to apply particular research techniques, but they also need to know which of these methods or techniques, are relevant and which are not, and what would they mean and indicate and why.
- 42)1. For each claim below, write: (1) claim in mathematical form; (2) Null hypothesis (Ho); (3) alternative hypothesis (Hp); (4) what tailed test. Use notations MuMz (for mean), PuP2 (for proportion), 01,02 (for standard deviation), Mo (for differences in means for dependenr (i.e., matched pair) samples) (a) Claim: California HS students on an average score lower in the SAT than Massachusetts HS students (1 = California, 2 = Massachuselts) (b) Claim: The proportion of smokers in Texas is the same as that in Oklahoma (1 = Texas, 2 = Oklahoma) (c) Claim: The standard deviation of weights in 8 oz Coke cans is at least as high as that in Pepsi cans (1 - Coke, 2 - Pepsi) (d) Claim: Ethiopian track athletes are, on an average, faster long-distance runners than the USA track athletes (1 - Ethiopia, 2 - USA) (e) Claim: The cholesterol level before taking Lipitor is, on an average, higher than that after taking the drug (I - Before drug, 2 - Aller drug)11. Ed had a mark of 75 out of 80 on a test, which had a mean mark of 60 and a standard deviation of 7.5. Sam had a mark of 78 out of 90 on a test, which had a mean mark of 66 and a standard deviation of 6.0. Statistically, who had the better mark compared to the rest of his class? A Ed had a better mark. B Sam had a better mark C You cannot tell who did better with the given information. D The two scores are statistically the same. 12. Anil received the following marks on his first five biology tests: 75, 84, 92, 61, and 79. What test score must Anil earn on his sixth test so that his mean mark for all six tests will be 80? 75+84 +92 +61 +79
- Are these statements true or false? High chi-square values indicate a high probability that the observed deviations could be due to random chance alone Low chi-square values indicate a low probability that the observed deviations could be due to random chance alone.6. a lower value of the standard deviation for a data set indicates that the values of that data set are spread over a relatively smaller range around the mean True False * 7. Simple table is defined as is a tabular method for simultaneously summarizing the data for two categorical variables. True O FalseThe standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample of 130 adult males, the pulse rates have a standard deviation of 10.7 bpm. Express the original claim in symbolic form.
