A microwave company claims that their microwaves can pop popcorn in under 2.25 minutes. After 134 randomly chosen microwaves were sampled, it was found that the mean time to pop popcorn was 2.5 minutes, with a standard deviation of .25 minutes. Using the information provided, determine if this claim should be rejected?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A microwave company claims that their microwaves can pop popcorn in under 2.25 minutes. After 134 randomly chosen microwaves were sampled, it was found that the mean time to pop popcorn was 2.5 minutes, with a standard deviation of .25 minutes. Using the information provided, determine if this claim should be rejected?
 
 
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Step 1:-

Ho: their microwaves can pop popcorn in under 2.25 minutes. 

H1: their microwaves can not pop popcorn in under 2.25 minutes. 

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