Multiple Choice
Construct a 95% confidence interval for the population mean, μ. Assume the population has a normaldistribution. A random sample of 16 lithium batteries has a mean life of 645 hours with a standard deviation of31 hours. Round to the nearest tenth.
A) (628.5, 661.5)
B) (876.2, 981.5)
C) (531.2, 612.9)
D) (321.7, 365.8)
Correct Answer:
Verified
Correct Answer:
Verified
Q78: True or False: The chi-square distribution is
Q79: Construct a 95% confidence interval for the
Q80: A local bank needs information concerning the
Q81: Assume that the heights of female
Q82: The heights of 20- to 29-year-old
Q83: <span class="ql-formula" data-value="\text { Find the critical
Q84: Construct a 95% confidence interval for the
Q86: A computer package was used to
Q87: The mean replacement time for a
Q88: A random sample of 20 electricians is