A normal variable has variance 9. At the the 90% confidence level, can we reject the hypothesis that the mean is 50? 40,

Business, Finance, Economics, Accounting, Operations Management, Computer Science, Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Algebra, Precalculus, Statistics and Probabilty, Advanced Math, Physics, Chemistry, Biology, Nursing, Psychology, Certifications, Tests, Prep, and more.
Post Reply
answerhappygod
Site Admin
Posts: 899604
Joined: Mon Aug 02, 2021 8:13 am

A normal variable has variance 9. At the the 90% confidence level, can we reject the hypothesis that the mean is 50? 40,

Post by answerhappygod »

A normal variable has variance 9. At the the 90% confidence
level, can we reject the hypothesis that the mean is 50?
40, 45, 55, 57, 65
the z value you need is 1.645

a.
should reject

b.
fail to reject
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!
Top
Post Reply

Return to “Archived Questions & Answers”