Question

20. How much do wild mountain lions weigh? Adult wild mountain lions (18 months or older) captured and released for the first time in the San Andres Mountains had the following weights (pounds):

67

108

127

127

60

64

Assume that the population of x values has an approximately normal distribution.

(a) Use a calculator with mean and sample standard deviation keys to find the sample mean weight x and sample standard deviation s. (Round your answers to one decimal place.)

x =	lb
s =	lb

(b) Find a 75% confidence interval for the population average weight μ of all adult mountain lions in the specified region. (Round your answers to one decimal place.)

lower limit	lb
upper limit	lb

Answer 1

a). i am using calculator to calculate the mean and sd.

mean ()	92.2
sd (s)	32.1

b).df = (n-1) = (6-1) = 5

t critical value for alpha=0.25,df=5, both tailed test be:-

the 75% confidence interval be:-

lower limit	75.1 lb
upper limit	109.2 lb

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