Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

A population has a mean 30 with a standard deviation of 2.5. A sample of 50 objects was taken, and was found to have a

A population has a mean 30 with a standard deviation of 2.5. A sample of 50 objects was taken, and was found to have a mean of 29.35. At a 5% level of significance, is there evidence the mean should be decreased?

A) What type of test is this (left-tailed, right-tailed, or two-tailed)? ANSWER: L or R or 2

B) Calculate the p-value. ANSWER to 4 decimals

C) Is there enough evidence to reject the null hypothesis? ANSWER Y or N

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Calculus Single And Multivariable

Authors: Deborah Hughes Hallett, Andrew M Gleason, William G McCallum

8th Edition

1119783267, 9781119783268

More Books

Students also viewed these Mathematics questions

Question

Be straight in the back without blowing out the chest

Answered: 1 week ago

Question

Wear as little as possible

Answered: 1 week ago

Question

Be relaxed at the hips

Answered: 1 week ago