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MATH 225N WEEK 4 HOMEWORK PROBABILITY QUESTION AND ANSWERS 1. Which of the pairs of events below is dependent? ________________________________________ Select the correct answer below: ________________________________________ drawing a 7 and then drawing another 7 with replacement from a standard deck of cards rolling a 1 and then rolling a 6 with a standard die rolling a 3 and then rolling a 4 with a standard die drawing a heart and then drawing a spade without replacement from a st...

Sophia - Environmental Science - Unit 2 Challenge 3. 1 — Photosynthesis and the Carbon Cycle Determine how carbon is cycled between plants and animals. How is carbon cycled between plants and animals? • a.) Dying organisms consume oil and coal. • b.) An animal eats a plant, then absorbs and exhales the carbon, which is then absorbed by other plants during photosynthesis. • c.) Plants use oxygen combined with sugar, to create water and carbon in order to grow. • d.) Plants releas...

Sophia - Environmental Science - Unit 4 Challenge 2. 1 — Climate Change Identify scientific observations that support the idea of climate change. Of the options below, which is used by scientists as evidence of man-made climate change? • a.) The growing number of endangered species • b.) The descending sea levels • c.) The melting of glaciers and polar ice caps • d.) The steep increase in the incidence and severity of skin cancer 2 — Causes of Climate Change Determine the ...

Sophia - Environmental Science - Unit 1 Challenge 2. 1 — Earth's Formation: History of Earth's Formation Determine the date of major events for Earth's history, according to the one-year calendar model. According to the one-year calendar model based on the Big Bang theory, which of the following events happened in September? • a.) The solar system comes into existence. • b.) The Big Bang occurs. • c.) Life appears on Earth. • d.) Homo sapiens appear on Earth. 2 — Earth'...

Sophia - Human Biology - Unit 3 Challenge 3. 1 — Sensory Receptors Identify which sense receptor is involved in a real-life example. Jordan falls and scrapes his knee. Which type of receptor alerts the brain that the body has been damaged? • a.) Osmoreceptor • b.) Nociceptor • c.) Mechanoreceptor • d.) Chemoreceptor 2 — Somatic Sense Determine how your body detects and interprets somatic sensations. What detects touch, pressure, heat, cold and pain? • a.) Somatosens...

Sophia - Human Biology - Unit 4 Challenge 1. 1 — Lower Respiratory Tract Determine the role of the lower respiratory system in breathing. In which part of the respiratory system does the exchange of gasses between the bloodstream and air occur? • a.) Trachea • b.) Bronchi • c.) Nose • d.) Lungs 2 — Upper Respiratory Tract Identify the role of the upper respiratory tract in breathing. Which part of the upper respiratory system helps produce the sounds necessary for speech?...

MATH 225N WEEK 1 ASSIGNMENT SAMPLING METHODS – QUESTIONS AND ANSWERS Questions 1. Assume that 80 houses are present in the form of a grid consisting of 10 columns and 8 rows. If a loud speaker is placed just before the first row, which sampling method works the best to select a sample of houses if we want to get an estimate of the average loudness (measured in decibels) near all the 80 houses? ________________________________________ Select the correct answer below: _____________________...

MATH 225N WEEK 8 QUESTIONS WITH ANSWERS Performing Linear Regressions with Technology An amateur astronomer is researching statistical properties of known stars using a variety of databases. They collect the absolute magnitude or MV and stellar mass or M⊙ for 30 stars. The absolute magnitude of a star is the intensity of light that would be observed from the star at a distance of 10 parsecs from the star. This is measured in terms of a particular band of the light spectrum, indicated ...

MATH 225N WEEK 6 QUIZ STATISTICS – QUESTION AND ANSWERS Question 1 A statistics professor recently graded final exams for students in her introductory statistics course. In a review of her grading, she found the mean score out of 100 points was a x¯=77, with a margin of error of 10. Construct a confidence interval for the mean score (out of 100 points) on the final exam. ________________________________________ That is correct! ________________________________________ $$(67, 87) Answ...