Mathematics, 31.03.2020 01:04 briannahernand2
There are various sources of flickering lights in our environment; for instance, light from computer screens and fluorescent bulbs. Whether or not the human eye can detect the flicker depends on its frequency. A 1973 study ("The effect of iris color on critical flicker frequency," Journal of General Psychology [1973], 91- 95) obtained data from a random sample of 19 subjects and recorded eye color and Critical Flicker Frequency (CFF), a numerical measure of threshold sensitivity to flickering light. Do the data suggest that threshold sensitivity to flickering light is related to eye color?
Answers: 1
Mathematics, 21.06.2019 15:40
Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathanās solution? jonathanās answer is reasonable because there are two decimal places in the factors and two in the product. jonathanās answer is unreasonable because there are three decimal places in the factors and two in the product. jonathanās answer is reasonable because is 16, and 16 is close to 15.77. jonathanās answer is unreasonable because is 8, and 8 is not very close to 15.77.
Answers: 1
Mathematics, 21.06.2019 18:50
Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling
Answers: 1
Mathematics, 21.06.2019 21:30
Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?
Answers: 3
Mathematics, 21.06.2019 22:30
Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4
Answers: 3
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