Please see the attached files.
1. A researcher suggests that male nurses earn more than female nurses. A survey of 16 male nurses and 20 female nurses reports these data. Is there enough evidence to support the claim that male nurses earn more than female nurses? Use or = 0.05. Male Nurses Female Nurses X = $24,100 X, = $23,750 $ = $300 $, = $250 n =16 n, = 20 Step 1: State the hypotheses and identify the claim H : H : Step 2: Find the critical value(s) C.V. = Step 3: Compute the test value Step 4: Determine whether to reject the null (circle the correct phrase) Do reject Ho. Don't reject Ho . Step 5: Summarize the results (circle the correct terms.) do reject We have sufficient evidence to the claim. don't support2. A pharmaceutical company claims that its new drug lowers systolic blood pressure. The table below shows the systolic blood pressure (in millimeters of mercury) for eight patients before and after taking the drug. At o = 0.01 , can we support the claim? Pressure Before 201 171 186 155 165 167 175 134 Pressure After 192 165 167 162 148 144 152 148 Step 1: State the hypotheses and identify the claim Ho : H : Step 2: Find the critical value(s) C.V. = Step 3: Compute the test value Step 4: Determine whether to reject the null (circle the correct phrase) Do reject Ho - Don't reject Ho . Step 5: Summarize the results (circle the correct terms.) do reject We have sufficient evidence to the claim. don't support3. The Moonview Cab Company and the Starlight Taxi Company are competitors. Can we support the claim that there is a difference in average miles traveled for each of the two taxi companies during a randomly selected week? The data are shown below. Use a = 0.01. Moonview Cab Company Starlight Taxi Company X, = 781 miles X, = 753 miles o = 30 miles 0, = 45 miles n = 35 n, = 40 Step 1: State the hypotheses and identify the claim Ho : H : Step 2: Find the critical value(s) C.V. = Step 3: Compute the test value Step 4: Determine whether to reject the null (circle the correct phrase) Do reject Ho. Don't reject Ho . Step 5: Summarize the results (circle the correct terms.) do reject We have sufficient evidence to the claim. don't support4. Pizza sales at two restaurants were recorded for one day. At the Pizza Pi restaurant, 22 of the 120 pizzas sold that day were cheese pizzas. On the same day, the Full Circle Eatery sold 30 cheese pizzas out of 96 total pizzas sold. At of = 0.05 , test the claim that the true proportion of cheese pizzas sold is the same for both restaurants. Step 1: State the hypotheses and identify the claim H : H : Step 2: Find the critical value(s) C.V. = Step 3: Compute the test value Step 4: Determine whether to reject the null (circle the correct phrase) Do reject Ho - Don't reject Ho . Step 5: Summarize the results (circle the correct terms.) do reject We have sufficient evidence to the claim. don't support
