subject
Mathematics, 14.04.2020 00:14 psychocatgirl1

How many cars must be randomly selected and tested in order to estimate the mean braking distance of registered cars in the United States. We want 99% confidence that the sample mean is within 2 ft of the population mean, and the population standard deviation is known to be 7 ft.
Z D/2 = 2.58

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 15:00
Three coins are flipped. what is the probability that there will be at least two tails?
Answers: 1
question
Mathematics, 21.06.2019 19:00
Apool measures 12.3 feet by 16.6 feet. if the longer wall of the pool has a diagonal of 17.8 feet, what is the volume of the pool? (round to nearest tenth)
Answers: 1
question
Mathematics, 21.06.2019 19:30
If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m βˆ’ 1) : (2n βˆ’ 1).
Answers: 3
question
Mathematics, 22.06.2019 01:00
3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 Β· 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)
Answers: 1
You know the right answer?
How many cars must be randomly selected and tested in order to estimate the mean braking distance of...
Questions
question
Mathematics, 11.11.2020 05:10
question
English, 11.11.2020 05:10
question
Mathematics, 11.11.2020 05:10
question
Mathematics, 11.11.2020 05:10
question
Mathematics, 11.11.2020 05:10
Questions on the website: 13722361