Multiple Choice
The Girl Scouts would like to estimate the proportion of people who consider Thin Mints to be their favorite Girl Scout cookie. The total sample size needed to construct a 90% confidence interval for the proportion of customers who favor Thin Mint cookies with a margin of error equal to 6% is .
A) 145
B) 247
C) 188
D) 285
Correct Answer:
Verified
Correct Answer:
Verified
Q86: John Charleston owns a heating oil delivery
Q87: Given that a 95% confidence interval is
Q88: When substituting the sample standard deviation for
Q89: The National Center for Education would like
Q90: Verizon Wireless would like to estimate the
Q92: When we use the t-distribution to calculate
Q93: All else being equal, a 90% confidence
Q94: Steve's average golf score at his local
Q95: A random sample of 150 mortgages in
Q96: The confidence interval for the mean is