Hello, I need help with a couple of questions for my applied statistics assignment. I'm not sure I clearly understand what the null and alternative hypotheses are.

The Scenario:

You have been hired by the Regional Real Estate Company to help them analyze real estate data. One of the company's Pacific region salespeople just returned to the office with a newly designed advertisement. The average cost per square foot of home sales based on this advertisement is $280. The salesperson claims that the average cost per square foot in the Pacific region is less than $280. In other words, he claims that the newly designed advertisement would result in higher average cost per square foot in the Pacific Region. He wants you to make sure he can make that statement before approving the use of the advertisement. In order to test his claim, you will generate a random sample size of 750 using data for the Pacific region and use this data to perform a hypothesis test.

The Prompt:

Generate a sample of size 750 using data for the Pacific region. Then, design a hypothesis test and interpret the results using significance level ? = .05. You will work with this sample in the assignment. Briefly describe how you generated your random sample

The questions that I have are:

Define the population parameter.

Write the null and alternative hypotheses. Note: Remember, the salesperson believes that his sales are higher.

This is a picture of the data that i have been working with. I feel as if the right tailed test is the correct answer but I'm not completely sure.

lana.k.goodwin@gmail.com X Excel Spreadsheet - Excel View Help Tell me what you want to do Share File Home Insert Page Layout Formulas Data Review AutoSum ~ Cut Calibri - 11 - A A = EX al Wrap Text General AY O Fill Copy $ ~ % " Conditional Format as Cell Insert Delete Format Sort & Find & Paste Format Painter BIULA = Merge & Center Formatting " Table " Styles ~ Clear Filter ~ Select ~ Font Alignment Number Styles Cells Editing Clipboard M17 X Y D G H K M N O P Q R S T U V House Cost per Square State County Region listing price square foot footage random WA cowlit Pacific $264,550 $131 1 0.8743715 Sample mean 249.55 OF benton Pacific $439,050 $199 2,209 0.0510408 Targe 280 A W N Pacific $447,500 $239 1,873 0.9273039 Standard Error 6.03 WA island kings Pacific $239,950 $134 1,786 0.925599 Test Statistic 5.04949401 749 OR umatilla Pacific $224,950 $117 1,920 0.2213402 Degrees of freedom AK matanuska-s Pacific $238,000 $134 1,775 0.3989294 CA humboldt Pacific $389,800 $244 0 0.6828777 WA island acific $409,500 $200 2,044 0.2180621 Two Tailed Test 10 OF polk Pacific $319,950 $151 2,114 0.3239293 HO: u = 280 11 WA whitman Pacific $229,050 $114 2,015 0.8531927 H1: u 280 12 OR washington Pacific $470,000 $201 2,335 0.8867159 P-value 5.56783E-07 13 OR marion Pacific $365,050 $169 2,164 0.126546 14 CA solano Pacific $443,590 $249 1,785 0.0503703 15 CA merced $299,500 $158 1,896 0.7846739 Left Tailed Test Pacific 16 AK fairbanks nor Pacific $229,521 $132 1,734 0.7001539 HO: u = 280 17 WA pierce Pacific $330,050 $155 2,128 0.1427019 H1: u 280 24 OR deschutes Pacific $443,282 $215 2,061 0.5134857 P-value 0.999999722 25 CA santa cruz Pacific $869,050 $523 1,661 0.8602371 26 OR clackamas Pacific $512,475 $201 2,553 0.4554265 27 CA san luis obispocific $719,050 $365 1,969 0.7168012 28 CA contra costa Pacific $672,500 $342 1,967 0.748184 29 WA yakima Pacific $251,046 $131 1,922 0.4014309 30 CA solano Pacific $482,550 $270 1,788 0.0519904 AK fairbanks nor Pacific $209,950 $135 1,560 0.6982431 HI hawaii Pacific $484,550 $316 1,535 0.5460656 33 CA yolo Pacific $509,050 $263 1,935 0.5042817 . . . East South Central Mountain Student Pacific West North Central | West South Central + + 80% Ready Accessibility: Good to go 12:56 PM W 4/3/2022 2