Question

1. If the standard deviation of a population is 20,
the population and sample means are 35 and
33, respectively and the t-statistic at 95%
confidence level is 2.5, the sample size is?​

Answer 1

Answer:

Step-by-step explanation:

The denominator in the sample standard deviation formula is N − 1, where N is the number of animals. In this example, there are N = 6 females, so the denominator is 6 − 1 = 5. The sample standard deviation for the female fulmars is therefore = ∑ = (− ¯) − = = For the male fulmars, a similar calculation gives a sample standard deviation of 894.37, approximately twice as large as the standard deviation …