Question

Taste of India conducts a survey of consumer liking of its products. One hundred consumers answered the survey and, on average, liked its curry chicken at a level of 7.8/10, with a variance of 2.07.
What is the standard deviation in this sample? What is the standard error in this sample?

Taste of India recruits another 50 consumers to answer its survey, and finds that its liking of curry chicken (and the associated variance) remain unchanged.
What is the standard error in this sample?

In Taste of India’s survey of 100 customers, 85% indicated they would try a new dish if they were given a coupon for it.
What is the variance, standard deviation, and standard error of this sample?

Answer 1