# Question: You have chosen a sample of 25 supermarkets out of

You have chosen a sample of 25 supermarkets out of the 684 you have responsibility for. These 25 have been inspected, and the number of violations of company policy has been recorded. For each of the following quantities, state whether it is a statistic or a parameter.

a.* The average number of violations among the 25 supermarkets you inspected.

b.* The mean number of violations you would have recorded had you inspected all 684 supermarkets you are responsible for.

c. The variability from one supermarket to another in the population.

d. The variability from one supermarket to another, as measured by the standard deviation you computed.

e. The standard deviation of your sample average.

f. The standard error of your sample average.

a.* The average number of violations among the 25 supermarkets you inspected.

b.* The mean number of violations you would have recorded had you inspected all 684 supermarkets you are responsible for.

c. The variability from one supermarket to another in the population.

d. The variability from one supermarket to another, as measured by the standard deviation you computed.

e. The standard deviation of your sample average.

f. The standard error of your sample average.

## Relevant Questions

Show that this database is arranged in the form of a frame. In particular, how would you use it to gain access to population information for a particular employee? Do exercise 3 using the ages instead of the salaries. a. Find the population mean for salary. b. Compare this population mean to the sample average for salary. In particular, how many standard errors apart are they? c. Find ...a. What is the difference between a prediction interval and a confidence interval? b. Which type of interval should you use to learn about the mean spending habits of your typical customer? c. Which type of interval should ...a. What is the relative frequency interpretation of the correctness of a confidence interval? b. What is the “lifetime track record” interpretation of the correctness of many confidence intervals? A nationwide poll claims that the margin of error is no more than 4.3 percentage points for questions asked of half the sample. a. Verify this claim in a particular case by computing the t table value times the standard ...Post your question