I need help with the below questions!

Vou conduct a study in a large southern town to determine whether the average amount spent on food perfoureperson family in the town is lower than the national average per foureperson family. A random sample of the weekly grocery bills of 50 four-person families reveals a mean of $145.88 and a standard deviation of $1 7.298861 En. Using EXEC\"! these numbers and an alpha level of .05. and producing accurate calculations: 1. What is the null hypothesis (in words)? .What is the alternative hypothesis (in words)? .What statistical test are you using to test this hypothesis? . Does this problem (all for a directional test ora non-directional test? Why? .What is the value of the standard error? UlU'ibl-UM .What is the value of tstat? q .What is the number of degrees of freedom for this statistical test? (Provide a numeric value) 8. What is the value of tcrit against which you will :ompare tstat for this hypothesis? 9. Based on these data. can we be 95% confident that the average weekly grocery bill of the population offour-person families in the town is less than the national average of four-person families? (Ves or No). justijyynur answer. 10. Using the exactformula (NOT the approximate formula) provided in class. what are the lower and upper bounds ofa 95% condence interval for the average amount spent on food per four-person family in the town? (Provide values accurate to the nearest dollar.)