1.A production line operation is designed to fill cans with tomato sauce with a mean weight of 20 ounces. A sample of 25 cans is selected to test whether overfilling or underfilling is occurring in the production line and they should stop and adjust it. Sample statistics (average and standard deviation) are calculated. Assume the population of interest is normally distributed. Use this information to answer questions 22 to 23.

Let the p-value be 0.08 for this sample. At 0.05 level of significance, it can be concluded that the mean filling weight of the population is

significantly different than 20 ounces

not significantly different than 20 ounces

significantly less than 20 ounces

not signiffcantly less than 20 ounces

2.The price of a particular brand of jeans has a standard deviation of $10. A sample of 64 pairs of jeans from this brand is selected and the average price for the sample is calculated. Assume the population of prices for this brand of jeans can be considered infinite. Answer questions 8-10.

What is the standard deviation of the sample average?

1.428

1.25

1.5859

10