There are 559 full-service restaurants in Delaware. The mean number of seats per restaurant is 99.2. [Source: Data based on the 2002 Economic Census from the US Census Bureau.]

Suppose that the true population mean = 99.2 and standard deviation = 20.5 are unknown to the Delaware tourism board. They select a simple random sample of 50 full-service restaurants located within the state to estimate . The mean number of seats per restaurant in the sample is M = 103.4, with a sample standard deviation of s = 18.2.'

The standard deviation of the distribution of sample means (that is, the standard error, M) is_____

The standard or typical average difference between the mean number of seats in the 559 full-service restaurants in Delaware ( = 99.2) and one randomly selected full-service restaurant in Delaware is _____.

The standard or typical average difference between the mean number of seats in the sample of 50 restaurants (M = 103.4) andonerandomly selected restaurantin that sampleis____ .

The standard or typical average difference between the mean number of seats in the 559 full-service restaurants in Delaware (=99.2) and thesample meanof any sample of size 50 is______ .

The z-score that locates the mean number of seats in the Delaware tourism board's sample (M = 103.4) in the distribution of sample means is _____.

Use the unit normal tables and accompanying figures to answer the question that follows. To use the tables, select the desired range of z-score values. A table of the proportions of the normal distribution corresponding to that range of z-scores will appear.