Question 20

2pts

Assume that you have conducted an experiment and the tail probability for the results you obtained was 0.0900 anda

= 0.05. You can conclude _________.

Group of answer choices

the independent variable has a small effect

the null hypothesis is false

the independent variable has no effect

you were unable to detect an effect of the independent variable with your experiment

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Question 21

2pts

If

= 0.7500, what is the power of the experiment?

Group of answer choices

1.0000

0.5000

0.2500

0.7500

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Question 22

2pts

If the power of an experiment is 0.3400, the probability of retaining H0when H0is false is _________.

Group of answer choices

0.6600

0.3400

1.0000

0.5000

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Question 23

2pts

One can increase power by _________.

Group of answer choices

making alpha more stringent

increasing the effect of independent variable

increasing N

increasing N and the effect of independent variable

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Question 24

2pts

Minimizing the

of an experiment _________.

Group of answer choices

minimizes alpha

No answer text provided.

maximizes power

minimizes alpha

minimizes the probability of making a Type II error

minimizes power

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Question 25

2pts

The advantage of a powerful experiment is that _________.

Group of answer choices

as power increases, alpha increases.

you are more likely to detect the real effects of the independent variable, if there are any.

the probability of a Type I error is reduced.

as power increases, N increases

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Question 26

16pts

Assume you are planning an experiment to evaluate a new drug that was designed to increase the appetite of cancer patients compared to a placebo on 16 cancer participants. You will use the sign test to analyze the data;=

0.051tail. You want to be able to detect a small effect of Preal=0.60.

What is the alternative hypothesis?

[ Select ]

["

Drug will increase the appetite of cancer patients

", "

Drug will impact the appetite of cancer patients

", "

Drug will decrease the appetite of cancer patients

", "

Drug will increase the appetite of all patients

"]

What is the null hypothesis?

[ Select ]

["

directional

", "

non-directional

", "

Drug will not increase the appetite of cancer patients

", "

Drug will not decrease the appetite of cancer patients

", "

Drug will not impact the appetite of cancer patients

", "

Drug will not increase the appetite of all patients

"]

What is the independent variable?

[ Select ]

["

drug the received

", "

appetite

"]

What is the dependent variable?

[ Select ]

["

appetite

", "

drug the received

"]

What is your Pnull?

[ Select ]

["

0.5

", "

0.6

", "

0.05

"]

What is your options under Pnull?

[ Select ]

["

0.05

", "

16

", "

16,15,14,13,12,11,10

", "

16,15,13,2,1,0

", "

16,15,13,12, 3,2,1,0

", "

drug the received

", "

0.60

", "

appetite

", "

16,15,13,12

"]

What is the power?

[ Select ]

["

0.1655

", "

drug they received

", "

appetite

", "

0.1665

", "

0.0049

"]

What is your

?

[ Select ]

["

0.9951

", "

0.8335

"]

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Question 27

2pts

Probabilities vary between _________.

Group of answer choices

0 and 1

1 and 0

0 and 100

0 and 2

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Question 28

2pts

The probability of rolling an odd number or a two on a throw of a single die equals_________.

Group of answer choices

0.0834

0.5000

0.6667

0.3333

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Question 29

2pts

The probability of rolling an even number or a two on a throw of a single die equals_________.

Group of answer choices

0.6667

0.3333

0.0834

0.5000

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Question 30

2pts

If p(A and B) = 0, then A and B must be _________.

Group of answer choices

exhaustive

independent

random

mutually exclusive

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Question 31

2pts

If P + Q = 1.00 then P and Q must be _________.

Group of answer choices

mutually exclusive

random

both mutually exclusive and exhaustive

exhaustive

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Question 32

2pts

The probability of throwing two ones with a pair of dice equals _________.

Group of answer choices

0.3333

0.0278

0.3600

0.1667

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Question 33

2pts

The requirements for the binomial distribution are _________.

Group of answer choices

the outcomes on each trial are mutually exclusive

a series of N trials

there is independence between trials

only two possible outcomes on each trial

all of the options