an oygen consumption, in milliliters per minute per kilogram, of 15 heart patients were recorded during exercise test. 9.7 21.0 17.5 11.0 15.6 15.2 14.6 12.6 10.4 15.9 16.2 13.8 12.4 13.4 8.2 a) What range of data is in the middle 50% of all the data? b) Make a box and whisker plot of the oxygen consumption. Label all components properly to receive full marks.

A researcher measures the relationship between hours worked by employed students and the number of units taken during the first semester of college for each individual in a group of 25 community college students. For this study: a. If we calculate the average hours worked by these community college students, the average would be an example of a ________ statistic b. Is a sample or population being measured here? c. What kind of a research study is this? d. N/n = e. What level of measurement is the number of units taken? Step 2 – check your work! Was your answer correct? If not, please make any correction here: Step 3 - if your answer was incorrect, please write out what was wrong (skip this if you were correct) show working for each

An investigation of the relationship between traffic flow (measured in cars per day) and lead content (measured in micrograms per gram of dry weight) in the bark of trees near the highway yielded the following summary statistics:   Sample Mean Sample Standard Deviation Lead Content (micrograms per gram dry weight) 680 240 Traffic Flow (cars / day) 1750 800 The correlation between lead content and traffic flow was found to be r = 0.6 and a scatterplot showed the form to be linear.   Based on context, which is the X-variable and which is the Y-variable? Group of answer choices X-variable                                                                 Y-variable

Samples of starting annual salaries for individuals entering the public accounting and financial planning professions follow. Annual salaries are shown in thousands of dollars. Public Accountant 51.2 59.8 56.3 58.2 55.2 56.0 51.9 60.5 57.0 50.9 Financial Planner 50.0 49.2 54.1 56.9 50.9 53.6 Find the value of the test statistic. W = 75.50 X 49.7 53.9 51.8 48.9 (a) Use a 0.05 level of significance and test the hypothesis that there is no difference between the starting annual salaries of public accountants and financial planners. State the null and alternative hypotheses. O Ho: The two populations of salaries are not identical. H₂: The two populations of salaries are identical. O Ho: Median salary for public accountants - Median salary for financial planners 20 H₂: Median salary for public accountants - Median salary for financial planners 0 O Ho: Median salary for public accountants - Median salary for financial planners > 0 H₂: ₂: Median salary for public accountants - Median salary…

The data represents the heights of eruptions by a geyser. Height of eruption Use the heights to construct a stemplot. Is there strong evidence suggesting that the data are not from a population having a normal distribution? (in.) 97 110 150o 140 110 100 130 110 128 137 116 126 117 123 123 120 130 130 107 141 OA. OB. OC. 9|077 10 0 6 6 11 00S 12 0 0 3 13 003 14 007 15 0 1 9|7 10 0 3.3 6 6 S 11 |0 00 7 12 0 0 1 13 0077 14 0 15 0 9 7 10 0 7 11 00067 12 03368 13 0007 14 01 15 0 Is there strong evidence suggesting that the data are not from a population having a normal distribution? O A. Yes, the distribution is not dramatically far from being a normal distribution with a "bell" shape, so there is strong evidence against a normal distribution. O B. No, the distribution is dramatically far from being a normal distribution with a "bell" shape, so there is not strong evidence against a normal distribution. O D. No, the distribution is not dramatically far from being a normal distribution with…

Each observation in a random sample of 101 bicycle accidents resulting in death was classified according to the day of the week on which the accident occurred. Data consistent with information are given in the following table. Day of Week Sunday Monday Tuesday Wednesday Thursday Friday Saturday Frequency 15 12 12 14 15 18 15 Based on these data, is it reasonable to conclude that the proportion of accidents is not the same for all days of the week? Use a = 0.05. Calculate the test statistic. (Round your answer to two decimal places.) x² Use technology to calculate the P-value. (Round your answer to four decimal places.) P-value = State the conclusion in the problem context. Reject Ho. We have convincing evidence that the proportion of accidents is not the same for all days of the week. Fail to reject Ho. We do not have convincing evidence that the proportion of accidents is not the same for all days of the week. Reject Ho. We do not have convincing evidence that the proportion of…

The price to earnings ratio (P/E) Is an Important tool in financial work. A random sample of 14 large U.S. banks (JP Morgan Chase, Bank of America, and others) gave the following P/E ratios.t 24 16 22 14 12 13 17 22 15 19 23 13 11 18 The sample mean is x = 17.1. Generally speaking, a low P/E ratio indicates a "value" or bargain stock. Suppose a recent copy of a magazine indicated that the P/E ratio of a certain stock index is H = 18. Let x be a random variable representing the P/E ratio of all large U.S. bank stocks. We assume that x has a normal distribution and o = 4.7. Do these data indicate that the P/E ratio of all U.S. bank stocks is less than 18? Use a = 0.01. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? O Ho: H = 18; H1: H # 18; two-tailed O Ho: H = 18; H1: H 18; right-tailed %3D O Ho: H # 18; H1: H = 18; two-tailed (b) What sampling distribution will you use? Explain the rationale…

What is the level of measurement of the variable “age”? A. IQR B. Range C. Median D. Ordinal E. Mode F. Nominal G. Mean H. Interval/Ratio I. IQV J. Standard deviation

Each observation in a random sample of 98 bicycle accidents resulting in death was classified according to the day of the week on which the accident occurred. Data consistent with information are given in the following table. x² Day of Week Frequency = Sunday Monday Tuesday Wednesday Thursday Friday Saturday 13 12 12 14 13 18 Based on these data, is it reasonable to conclude that the proportion of accidents is not the same for all days of the week? Use a = 0.05. Calculate the test statistic. (Round your answer to two decimal places.) 16 Use technology to calculate the P-value. (Round your answer to four decimal places.) P-value = State the conclusion in the problem context. O Reject Ho. We have convincing evidence that the proportion of accidents is not the same for all days of the week. O Fail to reject Ho. We have convincing evidence that the proportion of accidents is not the same for all days of the week. ● Fail to reject Ho. We do not have convincing evidence that the proportion…

11 15 23 29 19 22 21 20 15 25 17 The data above represents the amount of grams of carbohydrates in a serving of breakfast cereal in a sample of 12 different servings: What is the first quartile?