Mathematics, 22.04.2020 00:30, funnynunny2903
For each statement, select the correct null hypothesis, H0, and alternative hypothesis, HA, in symbolic form.(a) The mean height of all adult American males is 69 inches (5 ft 9 in). A researcher wants to prove that young American males between the ages of 18 and 21 tend to be taller than 69 inches. A random sample of 100 young American males ages 18 to 21 yielded a sample mean of 71 inches. (Here ? represents the population mean height of young American males.)A. H0:?>69, HA:?<69B. H0:x�=71, HA:x�<71C. H0:?=69 , HA:?>69D. H0:x�=69, HA:x�>69E. H0:?=69, HA:??69F. H0:?=71, HA:?<71(b) A certain type of hummingbird is known to have an average weight of 4.55 grams. A researcher believes that hummingbirds (of this same type) living in the Grand Canyon differ in weight from the population as a whole. The researcher finds a sample of 30 such hummingbirds from the Grand Canyon and calculates their average weight to be 3.75 grams. (Here ? represents the population mean weight of hummingbirds who live in the Grand Canyon.)A. H0:?<4.55, HA:?=4.55B. H0:x�=4.55, HA:x�<4.55C. H0:?=4.55, HA:??4.55D. H0:?=3.75, HA:??3.75E. H0:?=4.55, HA:?<4.55F. H0:x�=3.75, HA:x�>3.75(c) According to the Merck Veterinary Manual, the average resting heart rate for a certain type of sheep dog is 115 beats per minute (bpm). A Montana farmer notices his aging sheep dog has been acting more lethargic than usual. He believes that her heart rate is slower than normal for her breed. The farmer measured the dog's heart rate on 15 occasions and found a sample mean heart rate of 110.2 bpm. (Here ? represents the mean heart rate of the farmer's sheep dog over all occasions.)A. H0:x�=115, HA:x�>115B. H0:?=115, HA:?>115C. H0:?=115, HA:??115D. H0:x�=110.2, HA:x�?110.2E. H0:?=110.2, HA:?<110.2F. H0:?=115, HA:?<115
Answers: 2
Mathematics, 21.06.2019 16:30, Hfruit
You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:
Answers: 1
Mathematics, 21.06.2019 22:00, Morehollie9428
Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.
Answers: 2
Mathematics, 21.06.2019 23:00, jjackson0010
If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details
Answers: 1
For each statement, select the correct null hypothesis, H0, and alternative hypothesis, HA, in symbo...
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