In an attempt to determine the favorite sport of people in the city, marcos surveys every tenth person exiting a basketball game. which statement is most likely true?

a. the survey could be biased because basketball fans might favor basketball over other sports.
b. the survey could be biased because only every tenth person was surveyed.
c. the survey should be unbiased because every tenth person was systematically chosen.
d. the survey should be unbiased because basketball fans are like all sports fans.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Y=21.95x+10 y=22.45x solve by substitution

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?