Question

The Fisheries did a survey of ice fishing shacks last winter. A random sample of 195 shacks on the Salmnac River found that 152 had some type of heat source. On the Thomas River, a sample of 162 shacks found that 118 had some type of heat.

A) Find a 99% confidence interval for p₁ -- p₂.

B) Based upon these samples, can we determine that the populations on the Salmnac River and on the Thomas River are different?

C) Why? (explain your answer for b.)

Answer 1

we have given IS2 195 07795 n = 195 261 - 152 na 162 fi: Pa 07284 Pither 0.7795+07264 0.7563 4 118 162 2 a a) 2 99.4.3 0.5758: 99.1 CI -) 10.7795-07084)+ 2.5758 (21-2) I 2 H1-5) TH+B) ( hit than 575€ 707563(10 7503hp 795664 ) 0-0511 + 0118: =) (-0.0670, 0.1692) b) + we cannat salmnac different determine River and that the populations on the the Thomes Rivers C) Becalle confidence interval do not contain o.