Mathematics, 26.11.2019 05:31 torresxavier86osxdrx
Atourist agency wants to know what proportion of visitors to a popular landmark are from a specific foreign country. to find out, they survey 100100 people in the line to purchase tickets to see the landmark on a sunday afternoon in may. are all the assumptions and conditions for finding the sampling distribution of the proportion satisfied? explain briefly. choose the correct answer below.
a. yes, as long as there were more than 10001000 people in line that day, the sample size is sufficient.
b. no, it is likely that families have gone to see the landmark together, so the observations will not be independent.
c. no, due to the popularity of the landmark, the sample size is not large enough.
d. yes, as long as the day they picked to perform the survey was chosen at random, the observations will be independent.
Answers: 3
Mathematics, 21.06.2019 16:20
The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.
Answers: 3
Mathematics, 21.06.2019 18:00
In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.
Answers: 3
Mathematics, 21.06.2019 20:30
Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.
Answers: 1
Atourist agency wants to know what proportion of visitors to a popular landmark are from a specific...
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