Question

-From a random sample of 52 people, the average of the results was 49.73 with a standard deviation of 2.29. If we performed a hypothesis test for a population mean, then the degrees of freedom for this study is 51.

-The shape of a population distribution is unknown. If we drew random samples of size 48 from the population, then it is safe to say that the sampling distribution of x̄ will be normally distributed.

Decide wether the statements above are true or false

a) these statements are both true

b) these statements are both false

c) the first statement is true the second is false

d) the first statement is false the second is true

Answer 1