Two summers ago, Mrs. Pugawko saw a female black bear on a trail in Olympic National Park and was shocked with how large the bear appeared. The park ranger told her that there are 2,852 adult female black bears that are tracked and tagged in the national park. A random sample of 45 female black bears from those tagged had an average body weight of 204 pounds with a standard deviation of 26 pounds. A. Construct and interpret a 95% confidence interval to estimate the true population mean weight of all female bears that are tagged.

B. How big of a sample size should the ranger take if he wantsh is margin of error to be no more than 7 pounds?

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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