PLZ HELP IF WRONG ILL REPORT Best Buy wants to know whether customers liked the televisions they purchased from the store in the past year.

The store calls and asks every 4th person who bought a television within the past year whether he or she likes it.

Is this sample biased or unbiased? Please explain your reasoning! (Tell why)

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

The following graph of f(x)=x^2 has been shifted into the form f(x)=(x-h)^2+k

Acookie manufacturer advertised that every bag of a certain type of cookie contained at least 1000 chocolate chips. a consumer group bought 15 bags of cookies from a variety of locations, dissolved the cookies in water and hand-counted the number of chocolate chips in each bag. the average number of chocolate chips was 1161.6 and the standard deviation 117.6. a26. assuming a normal distribution, a 95% confidence interval for the mean number of cookies in each bag is (a) 1108.37 (b) 1108.13 (c) 1102.09 (d) 1096.86 to 1226.34 to 1214.83 to 1215.07 to 1221.11 (e) 1096.47 to 1226.73