Question

1. A biologist is studying fish diversity Lake Erie. The biologist knows that Black Carp are an invasive species in the region and would like to estimate the proportion of fish in Lake Erie that are Black Carp. Of 250 randomly sampled fish from Lake Erie, the biologist catches 69 Black Carp. What is the margin of error for a 95% confidence interval for the true proportion of fish that are Black Carp in Lake Erie? Select one: a. 0.0465 b. 0.0554 c. 0.3314 d. 0.0283 e. The assumptions necessary to calculate the confidence interval are not satisfied and the calculation cannot be performed. 2. The biologist then moves on to studying fish biodiversity in Lake Huron, and again would like to estimate the proportion of fish in Lake Huron that are Black Carp. Of 112 randomly sampled fish from Lake Huron, the biologist catches 108 Black Carp. What is the upper bound for a 90% confidence interval for the true proportion of fish that are Black Carp in Lake Huron ? Select one: a. 0.0288 b. 0.9931 c. 0.9867 d. 0.9818 e. The assumptions necessary to calculate the confidence interval are not satisfied and the calculation cannot be performed. 3. The biologist is studying Black Carp invasiveness in Lake Ontario next. He doesn't have time to sample the fish himself, so instead he instead asks a fisherman who has been fishing off of one of Toronto's piers all morning about his catch. The fisherman responds that, of the 75 fish he has caught, 33 have been Black Carp. What is the lower bound of a 99% confidence interval for the true proportion of fish that are Black Carp in Lake Ontario ? Select one: a. 0.2924 b. 0.3827 c. The assumptions necessary to calculate the confidence interval are not satisfied and the calculation cannot be performed. d. 0.1476 e. 0.3064

          1. 
A biologist is studying fish diversity Lake Erie. The biologist
knows that Black Carp are an invasive species in the region and
would like to estimate the proportion of fish in Lake Erie that are
Black Carp. Of 250 randomly sampled fish from Lake Erie, the
biologist catches 69 Black Carp. What is the margin of error for a
95% confidence interval for the true proportion of fish that are
Black Carp in Lake Erie?
Select one:
a. 0.0465
b. 0.0554
c. 0.3314
d. 0.0283
e. The assumptions necessary to calculate the confidence
interval are not satisfied and the calculation cannot be
performed.
2. 
The biologist then moves on to studying fish biodiversity in
Lake Huron, and again would like to estimate the proportion of fish
in Lake Huron that are Black Carp. Of 112 randomly sampled fish
from Lake Huron, the biologist catches 108 Black Carp. What is
the upper bound for a 90% confidence interval
for the true proportion of fish that are Black Carp in Lake Huron
?
Select one:
a. 0.0288
b. 0.9931
c. 0.9867
d. 0.9818
e. The assumptions necessary to calculate the confidence
interval are not satisfied and the calculation cannot be
performed.
3.
The biologist is studying Black Carp invasiveness in Lake
Ontario next. He doesn't have time to sample the fish himself, so
instead he instead asks a fisherman who has been fishing off of one
of Toronto's piers all morning about his catch. The fisherman
responds that, of the 75 fish he has caught, 33 have been Black
Carp. What is the lower bound of a 99%
confidence interval for the true proportion of fish that are Black
Carp in Lake Ontario ?
Select one:
a. 0.2924
b. 0.3827
c. The assumptions necessary to calculate the confidence
interval are not satisfied and the calculation cannot be
performed.
d. 0.1476
e. 0.3064

Added by Ashlee N.

Question

Please give Ace some feedback