Homework Answers
All of the above - error bars are graphical representation of variability. standard deviation or errors or confidence interval are used with error bar. So all are applicable.
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Question 3 (1 point) Which type of error bars would be suitable for use if you...
Question 4 (1 point) Which type of error bars would be suitable for use if you...
Question 4 (1 point) Which type of error bars would be suitable for use if you wished to display a population's maximum and minimum values? a) Range Ob) Standard deviation O c) Standard error d) All of the above e) a and b only
QUESTION 1 Which of the following Python variable names has syntax error ? OA. A. CSC121...
QUESTION 1 Which of the following Python variable names has syntax error ? OA. A. CSC121 OB. B. CSC121 Oc. C. CSC-121 D. None of the above QUESTION 2 What data type will Python use to store the value of num_students ? num_students = 17.0 A. floating point number (i.e. float) OB. B. integer (i.e. int) Oc. string (i.e. str) Od. D. None of the above
1) Which type of error is more likely to be made if it is difficult to...
1) Which type of error is more likely to be made if it is difficult to perform sampling and there is high population variance? Select one: a. Type I error b. Type II error c. Type III error d. a and b, but not c e. a, b and c 2) Pearson's r is suitable to measure the linear relationship between two __________ level variables. Select one: a. interval/ratio b. ratio but not interval c. interval but not ratio d....
a) Suppose you collect a SRS of size n from a population and from the data...
a) Suppose you collect a SRS of size n from a population and from the data collected you computed a 95% confidence interval for the mean of the population. Which of the following would produce a new confidence interval with larger width (larger margin of error) based on these same data? A. Use a larger confidence level. B. Use a smaller confidence level. C. Nothing can guarantee absolutely that you will get a larger interval. One can only say the...
(1 point) For each problem, select the best response. (a) What is significance good for? Which of the following que...
(1 point) For each problem, select the best response. (a) What is significance good for? Which of the following questions does a test of significance answer? A. Is the sample or experiment properly designed? B. Is the observed effect important? C. Is the observed effect due to chance? D. All of the above. (b) A Gallup Poll asked the question How would you rate the overall quality of the environment in this country today- as excellent, good, only fair, or...
27. For a party with 55 people invited, which of the following is true? The median...
27. For a party with 55 people invited, which of the following is true? The median arrival time would be exactly 62.899999999999991 minutes. b. The median arrival time would be 62.899999999999991 minutes on average. The median arrival time would be more than 63 minutes. d. We are not able to estimate the median arrival time for this party as all parties are different. a e. None of the above. 28. What is the relationship between a prediction interval and a...
In testing hypotheses, if the consequences of failing to reject a null hypothesis that is actually...
In testing hypotheses, if the consequences of failing to reject a null hypothesis that is actually false are very serious, we should: A. Insist that the level of significance be smaller than the P-value Buse a very small level of significance. C. insist that the P-value be smaller than the level of significance. OD. use a very large level of significance. 1.5 QUESTION 36 A 99% confidence interval for the mean y of a population is computed from a random...
QUESTION 4 Which distribution would you make use of when constructing a confidence interval given the...
QUESTION 4 Which distribution would you make use of when constructing a confidence interval given the following information: Sample mean is 9.4, sample standard deviation is 7.8, sample is size is 100. A. Both B. Neither ОСТ D. Normal
QUESTION 3: For this question we will analyze data from the 2014 American Time Use Survey. The su...
QUESTION 3: For this question we will analyze data from the 2014 American Time Use Survey. The survey offers the most detailed, up-to-date portrait of how people in the United States spend their time it also offers some insight into how Americans exercise and eat. I have included all the information you need to answer this question without your needing to access the data yourself (although it is publicly available). The data are drawn from a sample of n= 11,592...
Which statement about a confidence interval estimate of is true? A. Increasing the sample size decreases...
Which statement about a confidence interval estimate of is true? A. Increasing the sample size decreases the error margin. B. Increasing the level of confidence decreases the error margin. OC. Decreasing the error margin makes the confidence interval wider. OD. Increasing the population mean increases the error margin, QUESTION 10 The fishing industry is interested in the mean weight of salmon caught by a certain fishing company. From previous years' data, the standard deviation of the weights of salmon caught...
Question 4 (1 point) Which type of error bars would be suitable for use if you wished to display a population's maximum and minimum values? a) Range Ob) Standard deviation O c) Standard error d) All of the above e) a and b only
QUESTION 1 Which of the following Python variable names has syntax error ? OA. A. CSC121 OB. B. CSC121 Oc. C. CSC-121 D. None of the above QUESTION 2 What data type will Python use to store the value of num_students ? num_students = 17.0 A. floating point number (i.e. float) OB. B. integer (i.e. int) Oc. string (i.e. str) Od. D. None of the above
(1 point) For each problem, select the best response. (a) What is significance good for? Which of the following questions does a test of significance answer? A. Is the sample or experiment properly designed? B. Is the observed effect important? C. Is the observed effect due to chance? D. All of the above. (b) A Gallup Poll asked the question How would you rate the overall quality of the environment in this country today- as excellent, good, only fair, or...
27. For a party with 55 people invited, which of the following is true? The median arrival time would be exactly 62.899999999999991 minutes. b. The median arrival time would be 62.899999999999991 minutes on average. The median arrival time would be more than 63 minutes. d. We are not able to estimate the median arrival time for this party as all parties are different. a e. None of the above. 28. What is the relationship between a prediction interval and a...
In testing hypotheses, if the consequences of failing to reject a null hypothesis that is actually false are very serious, we should: A. Insist that the level of significance be smaller than the P-value Buse a very small level of significance. C. insist that the P-value be smaller than the level of significance. OD. use a very large level of significance. 1.5 QUESTION 36 A 99% confidence interval for the mean y of a population is computed from a random...
QUESTION 4 Which distribution would you make use of when constructing a confidence interval given the following information: Sample mean is 9.4, sample standard deviation is 7.8, sample is size is 100. A. Both B. Neither ОСТ D. Normal
QUESTION 3: For this question we will analyze data from the 2014 American Time Use Survey. The survey offers the most detailed, up-to-date portrait of how people in the United States spend their time it also offers some insight into how Americans exercise and eat. I have included all the information you need to answer this question without your needing to access the data yourself (although it is publicly available). The data are drawn from a sample of n= 11,592...
Which statement about a confidence interval estimate of is true? A. Increasing the sample size decreases the error margin. B. Increasing the level of confidence decreases the error margin. OC. Decreasing the error margin makes the confidence interval wider. OD. Increasing the population mean increases the error margin, QUESTION 10 The fishing industry is interested in the mean weight of salmon caught by a certain fishing company. From previous years' data, the standard deviation of the weights of salmon caught...
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