Case Study A-z-test - Two Tailed - A sample of 40 sales receipts from a grocery store has x-bar = $134 and a $28.2. Use

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Case Study A Z Test Two Tailed A Sample Of 40 Sales Receipts From A Grocery Store Has X Bar 134 And A 28 2 Use 1 (25.74 KiB) Viewed 41 times

Case Study A-z-test - Two Tailed - A sample of 40 sales receipts from a grocery store has x-bar = $134 and a $28.2. Use these values to test whether or not the mean is sales at the grocery store are different from (14) $150. (10 pts) Step 1: Define the null and alternative hypotheses Draw the bell curve to represent Hypothesis: Ho: μ H₂ P Step 2: If the test is to be made at the 2% significance level (a= 0.02), define the critical value of z (Z) Step 3: If you were to test the mechanic's claim, what would be the value of the observed z test statistic?