Mathematics, 12.11.2019 04:31 aperez4102

Annual incomes are known to have a distribution that is skewed to the right instead of being normally distributed. assume that we collect a large (ngreater than30) random sample of annual incomes. can the distribution of incomes in that sample be approximated by a normal distribution because the sample is large? why or why not?
choose the correct answer below.
a. yes; the sample size is over 30, so the sample of incomes will be normally distributed
b. no; unless more than 30 samples are collected, the sample of incomes will not be normally distributed
c. no; the population of incomes is not normally distributed, so the sample means will not be normally distributed for any sample size.
d. no, the sample means will be normally distributed, but the sample of incomes will be skewed to the right.

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 13:20, yoyo80431

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

Answers: 3

continue

Mathematics, 21.06.2019 18:00, angeladominguezgarci

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Answers: 1

continue

Mathematics, 21.06.2019 20:30, alexialiles19

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

continue

Mathematics, 21.06.2019 23:30, adrianna2324

Dawn is selling her mp3 player for 3 4 of the original price. the original price for the mp3 player was $40. how much is she selling her mp3 player for?

Answers: 1

continue

You know the right answer?

Annual incomes are known to have a distribution that is skewed to the right instead of being normall...