If three coins are tossed,which is NOT a possible value of the random variable for the number of tails?
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If three coins are tossed,which is NOT a possible value of the random variable for the number of tails?
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- Do random errors contribute to % error and/or standard deviation? Why? (Please correct answer)The world population in billions is approximately P = 7.4e0.010" where t is in years since 2016. Estimate the relative rate of change of population in 2020 using this model and the values of At below. Round your answers to three decimal places. (a) At = 1 The relative rate of change is % per year. the absolute tolerance is +/-0.001 (b) At = 0.1 The relative rate of change is % per year. (c) At = 0.01 The relative rate of change is % per year.Soon after taking an aspirin, a patient has absorbed 300 milligrams of the drug. If the amount of aspirin in the bloodstream decays exponentially, with half being removed every 2 hours, find, to the nearest 0.1 hour, the time it will take for the amount of aspirin in the bloodstream to decrease to 100 milligrams. hr
- The rate of decay of the radioactive isotope Free Neutron 239 is given by: M = -1.1 x 10-³M where M is the mass of the isotope in grams and t is time measured in minutes. A sample initially contains 3 grams of the isotope. What is the mass of the isotope present in the sample after 320 minutes? The mass is grams. Round your answer to 3 significant figures, if needed. b) How long does it take for the mass of the isotope in the sample to fall to 1.5 gram? It takes t = minutes. Round your answer to the nearest integer if needed.Although human lung capacity is about 3 liters per lung, the tidal volume, representing the amount of air that is breathed in and out with each breath is much -3 less, typically about 250 cm7 per lung. The cycle of inhalation and exhalation during normal activity can be represented as a sine curve, as shown in the figure below, where the amount of air in each lung before inhalation begins is about 1.09 liters (the functional residual capacity of the lung) and the time on the horizontal axis has been calculated with the average adult breathing rate of 16 breaths per minute. Volume of air in lungs (L) 1.34 1.09 mm minimum height maximum height 15 We can model each lung as a cylinder of radius 5.95 cm in which one end cap is free to move up and down, increasing and decreasing the volume of the model lung during the breathing process. (a) Using the data above, calculate the minimum and maximum heights (in cm) of the model lung during the breathing process. (Round your answers to at least…Based on a survey of a random sample of 900 adults in the United States, a journalist reports that 60 perc adults in the United States are in favor of increasing the minimum hourly wage. If the reported percent ha margin of error of 2.7 percentage points, which of the following is closest to the level of confidence?
- Compute the Pearson correlation for the following data x= 12, 3, 16, 24, 15 y=29, 41, 9, 1, 10State how many significant figures are proper in the results of the following calculations. (a) (36.842100) (265) (46.210) (2) (b) (5.9)² (c) (356.23 x 10-19) (3712)They determined that they can use this exponential model to predict the number of trees in the forest that will be infected after y years