Mathematics, 16.07.2019 20:20 Shihhschool20
An industrial designer wants to determine the average amount of time it takes an adult to assemble an “easy to assemble” toy. a sample of 16 times yielded an average time of 19.9 minutes, with a sample standard deviation of 6 minutes. assuming normality of assembly times, provide a 90% confidence interval for the mean assembly time.
a. (16.9, 22.9)b. (18.4, 21.4)c. (17.43, 22.37)d. (17.27, 22.53)
Answers: 2
Mathematics, 21.06.2019 18:40
Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.
Answers: 3
Mathematics, 21.06.2019 22:00
Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.
Answers: 2
Mathematics, 21.06.2019 23:00
Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u.s. dollars for every 100 euros. b. gabriella averages 100 u.s. dollars for every 25 euros. c. gabriella can exchange 75 u.s. dollars for 100 euros. d. gabriella can exchange 100 u.s. dollars for 75 euros.
Answers: 1
An industrial designer wants to determine the average amount of time it takes an adult to assemble a...
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