Consider the following computer output: Test of mu = 90 vs > 90 Variable N Mean StDev SE Mean x 20 91.4 0.717 0.16 What is the value of tcalc? Please report your answer in 3 decimal places.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.6: Rational Functions
Problem 11SC: Find the mean hourly cost when the cell phone described above is used for 240 minutes.
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Consider the following computer output:

Test of mu = 90 vs > 90

Variable N Mean StDev SE Mean
x 20 91.4 0.717 0.16

What is the value of tcalc? Please report your answer in 3 decimal places.

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