Mathematics, 01.07.2019 22:30 emmagbales
This problem has been solved! see the answerresearchers investigated the physiological changes that accompany laughter. ninety subjects (18-34 years old) watched film clips designed to evoke laughter. during the laughing period, the researchers measured the heart rate (beats perminute) of each subject, with the following summary results: overbarx=73.8 s=6. it is well known that the mean resting heart rate of adults is 71 beats per minute. complete parts a through d below. a. set up h0 and ha for testing whether the true mean heart rate during laughter exceeds 71 beats per minute. choose the correct answer below. a. h0: μ=71ha: μl< 71b. h0: μ≠71ha: μ=71c. h0: μ=71ha: μ> 71your answer is correct. d. h0: μ=71ha: μ≠71b. if α=0.05, find the rejection region for the test. choose the correct answer below. a .z< −1.96b. z> 1.96 or z< −1.96c. z> 1.645 or z< −1.645d. z> 1.645e. z> 1.96f. z< −1.645
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Mathematics, 21.06.2019 18:30
According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.
Answers: 1
Mathematics, 21.06.2019 19:00
What are the first 4 terms in the multiplication pattern given by the formula 2×4n
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Mathematics, 21.06.2019 23:00
Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.
Answers: 1
This problem has been solved! see the answerresearchers investigated the physiological changes that...
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