Mathematics, 09.12.2021 22:40 ft2134
A simple random sample of 40 recorded speeds (in mi/h) is obtained from cars traveling on a section
of Highway 805 in Los Angeles. The sample has a mean of 68.4 mi/h and a standard deviation of 5.7
mi/h (based on data from Sigalert). Use a 0.05 significance level to test the claim that the mean speed
of all cars is greater than the posted speed limit of 65 mi/h.
Answers: 2
Mathematics, 21.06.2019 17:50
(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d
Answers: 1
Mathematics, 21.06.2019 20:00
Given the equation y β 4 = three fourths(x + 8) in point-slope form, identify the equation of the same line in standard form. βthree fourthsx + y = 10 3x β 4y = β40 y = three fourthsx + 12 y = three fourthsx + 10
Answers: 1
Mathematics, 21.06.2019 20:00
Prove that the value of the expression 7^8β7^7+7^6 is divisible by 43.
Answers: 1
Mathematics, 21.06.2019 21:30
In a test for esp (extrasensory perception), the experimenter looks at cards that are hidden from the subject. each card contains either a star, a circle, a wave, a cross or a square.(five shapes) as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. when the esp study described above discovers a subject whose performance appears to be better than guessing, the study continues at greater length. the experimenter looks at many cards bearing one of five shapes (star, square, circle, wave, and cross) in an order determined by random numbers. the subject cannot see the experimenter as he looks at each card in turn, in order to avoid any possible nonverbal clues. the answers of a subject who does not have esp should be independent observations, each with probability 1/5 of success. we record 1000 attempts. which of the following assumptions must be met in order to solve this problem? it's reasonable to assume normality 0.8(1000), 0.2(1000)%30 approximately normal 0.8(1000), 0.2(1000)% 10 approximately normal srs it is reasonable to assume the total number of cards is over 10,000 it is reasonable to assume the total number of cards is over 1000
Answers: 1
A simple random sample of 40 recorded speeds (in mi/h) is obtained from cars traveling on a section...
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