A survey by the American Veterinary Medical Association found that out of 120 families surveyed, 18 owned a bird. Fifteen years

Question

3 years ago

10

A survey by the American Veterinary Medical Association found that out of 120 families surveyed, 18 owned a bird. Fifteen years

ago, a similar study found that only 5 families out of 100 surveyed had a bird. Are the validity conditions for a two-sample z-test/interval adequately met

Mathematics

1 answer:

sveticcg [70] · Answer 1 · 2021-12-13T22:19:48+03:00

Answer:

Step-by-step explanation:

The assumptions include:

The samples from each population must be independent of one another: this was adequately met.

The populations from which the samples are taken must be normally distributed: this was not talked about

The population standard deviations must be known: not known

or the sample sizes must be large (i.e. n1≥30 and n2≥30: true

The validity conditions for a two-sample z-test/interval were not all adequately met