Mathematics, 07.12.2020 14:00 iiwolfiexuni
Length of a rod: 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.
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.
What is the resulting 90% confidence interval?
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 14:30
What are the relative frequencies, to the nearest hundredth, of the rows of the two-way table? group 1: a 15 b 45 group 2: a 20 b 25
Answers: 3
Mathematics, 21.06.2019 19:00
What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)
Answers: 2
Mathematics, 21.06.2019 19:10
Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.
Answers: 3
Mathematics, 22.06.2019 00:00
Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment
Answers: 1
You know the right answer?
Length of a rod: Engineers on the Bay Bridge are measuring tower rods to find out if any rods have b...
Questions
Social Studies, 04.07.2019 20:00
Physics, 04.07.2019 20:00
Mathematics, 04.07.2019 20:00
History, 04.07.2019 20:00
Mathematics, 04.07.2019 20:00
English, 04.07.2019 20:00
Social Studies, 04.07.2019 20:00
Mathematics, 04.07.2019 20:00
Business, 04.07.2019 20:00
English, 04.07.2019 20:00
Mathematics, 04.07.2019 20:00
Mathematics, 04.07.2019 20:00
Mathematics, 04.07.2019 20:00
