Question

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 gave the following weights (pounds):

72

106

133

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 =
s =

lower limit
upper limit

(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.)

Answer 1

A)

Mean= 93.6

standard deviation= s = 32.5

upper limit= 133

lower limit=60

using excel we find this value

Mean	93.66666667
Standard Error	13.28323923
Median	89
Mode	#N/A
Standard Deviation	32.53715825
Sample Variance	1058.666667
Kurtosis	-2.54573331
Skewness	0.220567427
Range	73
Minimum	60
Maximum	133
Sum	562
Count	6
Confidence Level(75.0%)	17.28081728

B)

75% confidence interval for this given data using sample size,mean,and standard deviation

76.3 to 110.9