云E品19. According to Table B, P (z < –1.7) isa. 0.0446b. 0.9876c. 0.0221d. 0.02520. Refer to the #17, 18 and 19 above.As the degrees of freedomthe left-tail probability P (t < -1.7) gets closer to the left-tail probability P (z < -1.7).In other words, the t density curve approaches the standard Normal density curve (z curve) when theSee Fig 17.1 and the last bullet point on p413.sample sizea.decreases, decreasesb. increases, increasesincreases, decreasesd. decreases, increasesCalculate t test statistic and look up tail probability21. Let u = 20. A sample of size 10 provided a sample mean x = 22 and a sample standard deviations = 3.2. Find P (x > 22).a. 0.025 22) < 0.05b. 0.05 22) < 0.10c. 0.10 22) < 0.20d. 0.20 22) < 0.2522. Let u = 20. A sample of size 10 provided a sample mean x = 18 and a sample standard deviations = 3.2. Find P (> 18).Hint: Notice the #21 and #22 have the same answer. Why? How different are the two t values? Differ bya sign only!a. 0.025 18) < 0.05b. 0.05 18) < 0.10c. 0.10 18) < 0.20MacBook Air08F3000000DDF4

Name: 云E品19. According to Table B, P (z < –1.7) isa. 0.0446b. 0.9876c. 0.02
Uploaded: 2024-03-20T07:06:41.000Z
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Description: 云E品19. According to Table B, P (z < –1.7) isa. 0.0446b. 0.9876c. 0.0221d. 0.02520. Refer to the #17, 18 and 19 above.As the degrees of freedomthe left-tail probability P (t < -1.7) gets closer to the left-tail probability P (z < -1.7).In other words