Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

75% + v Ta View Zoom Add Category Insert # + Sheet1 #1 #2 #3 #4 A study examined the accuracy of consumer technology used

image text in transcribed

image text in transcribed
75% + v Ta View Zoom Add Category Insert # + Sheet1 #1 #2 #3 #4 A study examined the accuracy of consumer technology used for counting steps. The report states that when a random sample of 28 healthy adults each walked exactly 500 steps on a treadmill, the iphone app reported an average of 541 steps with a standard deviation of 65 steps . By comparison, the same 28 adults also use a Fitbit reported an average of 466 steps with a standard deviation of 90 steps. See the table below for the results you will use for your hypothesis test. Do these results provide significant evidence that the step results of the iphone app differ significantly from the results of the Fitbit watch? Use a confidence level of 95%. Run the same results for a confidence level of 99% (not 95%). Update and input into the area below to show your work. Type in your final answers into the box below the input area. N Mean StDev SE Mean iPhone app 28 521 65 12.283845 Fitbit watch 28 486 90 17.0084012 Difference 28 35.0 77.5 14.6461 difference for 95% confidence difference for 99% confidence input n same bar input x_bar same mu input mu same input same SE =s/SQRT(s) copy your work over from the left t or z value (x_bar-mu)/SE copy your work over from the left copy your work over from the left p_value up to t copy your work over from the left 1-p 1.000 upper tail copy your work over from the left 2'0 2.000 edit for two tailed copy your work over from the left copy your work over from the left alpha input alpha input changes alpha/2 0.000 which one do you want? copy your work over from the left t crit use alpha or alpha/2 copy your work over from the left copy your work over from the left m =t_crit*SE copy your work over from the left x_bar-m lower limit copy your work over from the left

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

An Introduction To Statistical Methods And Data Analysis

Authors: R. Lyman Ott, Micheal T. Longnecker

7th Edition

1305269470, 978-1305465527, 1305465520, 978-1305269477

More Books

Students also viewed these Mathematics questions

Question

What are some guidelines for setting performance objectives?

Answered: 1 week ago

Question

1. Background knowledge of the subject and

Answered: 1 week ago