Math 227 - Statistics » Fall 2020 » Sec 8.1 Quiz
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Math 227 - Statistics ] course for $25 USD.
Existing Quiz Clients Login here
Question #1
A random sample of 187 full-grown lobsters had a mean weight of 19 ounces and a standard deviation of 3.3 ounces. Construct a 98% confidence interval for the population mean μ.
A.
18 oz < μ < 21 oz
B.
18 oz < μ <20 oz
C.
17 oz < μ < 19 oz
D.
19 oz < μ <21 oz
Question #2
How many women must be randomly selected to estimate the mean weight of women in one age group. We want 90% confidence that the sample mean is within 3.4 lb of the population mean, and the population standard deviation is known to be 25 lb.
A.
148
B.
142
C.
147
D.
146
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Math 227 - Statistics ] course for $25 USD.
Existing Quiz Clients Login here