Mathematics, 15.02.2021 20:10 judyd452
Based on a random sample of size 50, you observe a sample mean of 143.6 and a sample standard deviation of 38.1. You then calculate a 95% confidence interval for the population mean, and it has length L1. Now suppose that the sample size had instead been 150, but with the same sample mean and the same sample standard deviation. Let L2 be the length of a 95% confidence interval for the population mean based on this larger sample. Which of the following is closest to the ratio L2/L1?
a. 0.78
b. 0.57
c. 0.86
d. 0.65
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 16:40
Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.
Answers: 3
Mathematics, 21.06.2019 18:10
Which points are solutions to the linear inequality y < 0.5x + 2? check all that apply. (–3, –2) (–2, 1) (–1, –2) (–1, 2) (1, –2) (1, 2)
Answers: 3
Mathematics, 21.06.2019 18:30
Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).
Answers: 1
Mathematics, 21.06.2019 19:30
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: 2
You know the right answer?
Based on a random sample of size 50, you observe a sample mean of 143.6 and a sample standard deviat...
Questions
Mathematics, 19.01.2021 17:50
Mathematics, 19.01.2021 17:50
Biology, 19.01.2021 17:50
Chemistry, 19.01.2021 17:50
Mathematics, 19.01.2021 17:50
Social Studies, 19.01.2021 17:50
Mathematics, 19.01.2021 17:50
Mathematics, 19.01.2021 17:50
Social Studies, 19.01.2021 17:50
Mathematics, 19.01.2021 17:50
Computers and Technology, 19.01.2021 17:50
English, 19.01.2021 17:50
