A well-known brokerage firm executive claimed that 90% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 600 people, 570 of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 90% at the 0.01 significance level. The null and alternative hypothesis would be: Но:р 3 0.9 Но:д — 0.9 Но:р — 0.9 Но:р%3D 0.9 Но:д — 0.9 Но:р — 0.9 H:р < 0.9 Н:р < 0.9 H:p> 0.9 Hj:p # 0.9 Hi:д # 0.9 Hi:р> 0.9 The test is: two-tailed right-tailed left-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis
A well-known brokerage firm executive claimed that 90% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 600 people, 570 of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 90% at the 0.01 significance level. The null and alternative hypothesis would be: Но:р 3 0.9 Но:д — 0.9 Но:р — 0.9 Но:р%3D 0.9 Но:д — 0.9 Но:р — 0.9 H:р < 0.9 Н:р < 0.9 H:p> 0.9 Hj:p # 0.9 Hi:д # 0.9 Hi:р> 0.9 The test is: two-tailed right-tailed left-tailed The test statistic is: (to 3 decimals) The p-value is: (to 4 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
Related questions
Question
help question 15
Transcribed Image Text:Question 15
>
A well-known brokerage firm executive claimed that 90% of investors are currently confident of meeting their
investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample
of 600 people, 570 of them said they are confident of meeting their goals.
Test the claim that the proportion of people who are confident is larger than 90% at the 0.01 significance
level.
The null and alternative hypothesis would be:
Ho:P
0.9 Но: и 3 0.9 Но:р
—D 0.9 Но:р
H1:p < 0.9 H1:µ < 0.9 H1: µ > 0.9 H1:p 7 0.9 H1: µ + 0.9 H1:p > 0.9
0.9 Но:и 3 0.9 Но:р — 0.9
The test is:
two-tailed right-tailed left-tailed
The test statistic is:
(to 3 decimals)
The p-value is:
(to 4 decimals)
Based on this we:
Fail to reject the null hypothesis
Reject the null hypothesis
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 5 images
Recommended textbooks for you
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning