subject
Mathematics, 06.04.2020 18:36 Chapo3760

"Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. TInterval (13.046,22.15) x= 17.598 Sx = 16.01712719 n= 50 a. Express the confidence interval in the format that uses the ""less than"" symbol. Given that the original listed data use one decimal place, round the confidence interval limits accordingly."b. Identify the best point estimate of μ and the margin of error.
c. In constructing the confidence interval estimate of μ, why is it not necessary to confirm that the sample data appear to be from a population with a normaldistribution?
A. Because the sample standard deviation is known, the normal distribution can be used to construct the confidence interval.
B. Because the sample is a random sample, it can be assumed that the sample mean is from a population with a normal distribution.
C. Because the population standard deviation is known, the normal distribution can be used to construct the confidence interval.
D. Because the sample size of 50 is greater than 30, it can be assumed that the sample mean is from a population with a normal distribution.

ansver
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 12:30, yourbakedpotato101
Which expression is the factored from of 2/3x + 4?asap
Answers: 1
image
Mathematics, 21.06.2019 15:20, heyrosaphoto3159
The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time
Answers: 1
image
Mathematics, 21.06.2019 19:30, tiwaribianca475
Cor d? ? me ? max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 1
image
Mathematics, 21.06.2019 20:00, ZaneKun
Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?
Answers: 1
You know the right answer?
"Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. C...

Questions in other subjects:

Konu
English, 08.06.2021 16:40
Konu
Health, 08.06.2021 16:40
Konu
Health, 08.06.2021 16:40