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PSYC 354 Homework 6 Solution

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Percentiles and Hypothesis Testing with Z-Tests

When submitting this file, be sure the filename includes your full name, course and section.

Example: HW6_JohnDoe_354B01

Be sure you have reviewed this module/week’s lesson and presentations along with the practice

data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then

copy and paste your output and graphs into your homework document file. Answer any written

questions (such as the text-based questions or the APA Participants section) in the appropriate

place within the same file.

Part I: Concepts

Questions 1–4

These questions are based on the Nolan and Heinzen reading and

end-of-chapter questions.

Part I: Questions 1-7

End-of-chapter problems:

Answer the following questions.

If applicable, remember to show work in your homework document for partial credit.

1) What are the 6 steps of hypothesis testing?

(State the 6 steps)

A)

B)

C)

D)

E)

F)

2) Using the z table in Appendix B, calculate the following percentages for a z score of

-0.45

2-a) % above this z

score: Answer

2-b) % below this z

score: Answer

Work:

Work:

Page 1 of 7

PSYC 354

2-c) At least as extreme

as this z score (on either

side):

Work:

Answer

3) Rewrite each of the following percentages as probabilities, or p levels:

3-a) 5% = Answer

3-b) 95% = Answer

3-c) 43% = Answer

4) If the critical values, or cutoffs, for a two-tailed z test are -2.05 and +2.05, determine

whether you would reject or fail to reject the null hypothesis in each of the following

cases:

4a) z = 2.23

4b) z = -0.97

5)

Answer

Answer

Imagine a class of twenty-five 12-year-old girls with an average height of 62 inches.

We know that the population mean and standard deviation for this age group of

girls is m=59 inches, s = 1.5 inches. (Note that this is a z statistic problem.)

5a)...

Click Link Below To Buy:

http://hwaid.com/shop/psyc-354-homework-6-solution/

Percentiles and Hypothesis Testing with Z-Tests

When submitting this file, be sure the filename includes your full name, course and section.

Example: HW6_JohnDoe_354B01

Be sure you have reviewed this module/week’s lesson and presentations along with the practice

data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then

copy and paste your output and graphs into your homework document file. Answer any written

questions (such as the text-based questions or the APA Participants section) in the appropriate

place within the same file.

Part I: Concepts

Questions 1–4

These questions are based on the Nolan and Heinzen reading and

end-of-chapter questions.

Part I: Questions 1-7

End-of-chapter problems:

Answer the following questions.

If applicable, remember to show work in your homework document for partial credit.

1) What are the 6 steps of hypothesis testing?

(State the 6 steps)

A)

B)

C)

D)

E)

F)

2) Using the z table in Appendix B, calculate the following percentages for a z score of

-0.45

2-a) % above this z

score: Answer

2-b) % below this z

score: Answer

Work:

Work:

Page 1 of 7

PSYC 354

2-c) At least as extreme

as this z score (on either

side):

Work:

Answer

3) Rewrite each of the following percentages as probabilities, or p levels:

3-a) 5% = Answer

3-b) 95% = Answer

3-c) 43% = Answer

4) If the critical values, or cutoffs, for a two-tailed z test are -2.05 and +2.05, determine

whether you would reject or fail to reject the null hypothesis in each of the following

cases:

4a) z = 2.23

4b) z = -0.97

5)

Answer

Answer

Imagine a class of twenty-five 12-year-old girls with an average height of 62 inches.

We know that the population mean and standard deviation for this age group of

girls is m=59 inches, s = 1.5 inches. (Note that this is a z statistic problem.)

5a)...

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