Mathematics, 29.07.2019 19:20 jovellabreu12
Engineers on the bay bridge are measuring tower rods to find out if any rods have been corroded from salt water. there are rods on the east and west sides of the bridge span. one engineer plans to measure the length of an eastern rod 25 times and then calculate the average of the 25 measurements to estimate the true length of the eastern rod. a different engineer plans to measure the length of a western rod 20 times and then calculate the average of the 20 measurements to estimate the true length of the western rod. suppose the engineer who collected 25 measurements for the eastern rod has a mean length of 23.9 feet with a standard deviation of 0.5 feet. the critical t-value for a 90% (one-sample) confidence interval with df = 24 is t=1.71. which of the following is the resulting 90% confidence interval?
Answers: 1
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
Mathematics, 22.06.2019 04:00
If julia has a value of x5.4 that is equivalent to x10.9 true or false. explain
Answers: 3
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