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
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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

9) We need to calculate, P(z<-1.7)

Answered: 19. According to Table B, P (z < -1.7)…

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19. According to Table B, P (z < -1.7) is a. 0.0446 b. 0.9876 c. 0.0221 d. 0.025

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

Topic Video

Question

云E
品
19. According to Table B, P (z < –1.7) is
a. 0.0446
b. 0.9876
c. 0.0221
d. 0.025
20. Refer to the #17, 18 and 19 above.
As the degrees of freedom
the 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 the
See Fig 17.1 and the last bullet point on p413.
sample size
a.
decreases, decreases
b. increases, increases
increases, decreases
d. decreases, increases
Calculate t test statistic and look up tail probability
21. Let u = 20. A sample of size 10 provided a sample mean x = 22 and a sample standard deviation
s = 3.2. Find P (x > 22).
a. 0.025 < P (x > 22) < 0.05
b. 0.05 < P (x > 22) < 0.10
c. 0.10 < P (x > 22) < 0.20
d. 0.20 < P (ã > 22) < 0.25
22. Let u = 20. A sample of size 10 provided a sample mean x = 18 and a sample standard deviation
s = 3.2. Find P (> 18).
Hint: Notice the #21 and #22 have the same answer. Why? How different are the two t values? Differ by
a sign only!
a. 0.025 < P (ã> 18) < 0.05
b. 0.05 < P (ã > 18) < 0.10
c. 0.10 < P (x > 18) < 0.20
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