ELEM. STATISTICS TEXT W/ MANUAL+CONNECT
1st Edition
ISBN: 9781260722031
Author: Navidi
Publisher: McGraw-Hill Publishing Co.
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Question
Chapter 11.1, Problem 23E
(a)
To determine
The alternative hypothesis
(b)
To determine
Whether null hypothesis can be rejected or not at
(c)
To determine
The degrees of freedom for the test statistic
(d)
To determine
The degree of freedom using other method
(e)
To determine
The p-value with degree of freedom calculated above.
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Check out a sample textbook solutionStudents have asked these similar questions
Let
n1=40,
X1=10,
n2=40,
and
X2=20.
Complete parts (a) and (b) below.
a. At the
0.05
level of significance, is there evidence of a significant difference between the two population proportions?
Determine the null and alternative hypotheses. Choose the correct answer below.
A.
H0: π1≤π2
H1: π1>π2
B.
H0: π1≥π2
H1: π1<π2
C.
H0: π1≠π2
H1: π1=π2
D.
H0: π1=π2
H1: π1≠π2
Calculate the test statistic,
ZSTAT,
based on the difference
p1−p2.
The test statistic,
ZSTAT,
is
?
(Type an integer or a decimal. Round to two decimal places as needed.)
Calculate the p-value.
The p-value is
?
(Type an integer or a decimal. Round to three decimal places as needed.)
b. Construct a
95%
confidence interval estimate of the difference between the two population proportions.
?≤π1−π2≤?
(Type integers or decimals. Round to four decimal places as needed.)
Using the information provided in the SPSS output. You are asked to make a decision about whether to reject the null hypothesis that the population value of gamma equals 0 (i.e., that there is no ordinary association in the population between frequency of prayer and health). If alpha = 0.05 and you use a non-directional alternative hypothesis, which of the following is true?)
A. Since the p-value is larger than alpha, you do not reject the null hypothesis
B. Since the p-value is less than alpha, you do not reject the null hypothesis
C. Since the p-value is larger than alpha, you reject the null hypothesis.
D. Since the p-value is less than alpha, you reject the null hypothesis
A random sample of 10 professional athletes produced the following data where X is the number of endorsements the player has and Y is the amount of money made (in millions of dollars).
Use the 4 steps of hypothesis testing to see if the prediction is significant with a criteria of alpha=.05 on the following data.
x
y
0
2
3
8
2
7
1
3
5
13
5
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Chapter 11 Solutions
ELEM. STATISTICS TEXT W/ MANUAL+CONNECT
Ch. 11.1 - In Exercises 3 and 4, fill in each blank with the...Ch. 11.1 - Prob. 4ECh. 11.1 - Prob. 5ECh. 11.1 - Prob. 6ECh. 11.1 - A test was made of H0:1=2 versus H1:12. The sample...Ch. 11.1 - A test was made of H0:1=2 versus H1:12. The sample...Ch. 11.1 - More time on the Internet: The General Social...Ch. 11.1 - Low-fat or low-carb? Are low-fat diets or low-carb...Ch. 11.1 - Are you smarter than your older brother? In a...Ch. 11.1 - Recovering from surgery: A new postsurgical...
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