Question 5In a survey, 19 people were asked how much they spent on their child's last birthdaygift. The results were roughly bell-shaped with a mean of $39.7 and standarddeviation of $16.4. Estimate how much a typical parent would spend on their child'sbirthday gift (use a 80% confidence level). Give your answers to 3 decimal places.le CExpress your answer in the format of z ± E.土$ResdeQuestion Help: Message instructorSubmit QuestionPDFhortcot

Name: Question 5In a survey, 19 people were asked how much they spent on th
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Description: Question 5In a survey, 19 people were asked how much they spent on their child's last birthdaygift. The results were roughly bell-shaped with a mean of $39.7 and standarddeviation of $16.4. Estimate how much a typical parent would spend on their chi

The summary of statistics is, x¯=39.7,s=16.4,n=19 The degree of freedom is, df=n-1 =19-1 =18…

Answered: In a survey, 19 people were asked how…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Step 1

The summary of statistics is,

$\bar{x} = 39.7, s = 16.4, n = 19$

The degree of freedom is,

$d f = n - 1 = 19 - 1 = 18$

Critical values:

By using the t-table, the critical value at 80% confidence level with df = 18 for two tailed test is,

$t_{0.20 / 2} = \pm 1.330$

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