Questions & AnswersStatistics and Probability

You may need to use the appropriate appendix...

Question
Answered step-by-step
Asked by UltraSpiderMaster43 on coursehero.com

You may need to use the appropriate appendix...

You may need to use the appropriate appendix table or technology to answer this question.

 

Two hundred students are enrolled in an Economics class. After the first examination, a random sample of 6 papers was selected. The scores were 73, 79, 94, 76, 77, and 87.(a)Determine the standard error of the mean. (Round your answer to four decimal places.)   

3.2352 - Correct answer

 

(b)What assumption must be made before we can determine an interval for the mean score of all the students in the class? Explain why. Choose an option below

-Since n is small and 𝜎 is estimated from s, we must assume that n is greater than s.

-Since n is small and 𝜎 is estimated from s, we must assume that s is greater than n.    

-Since the distribution of all scores is not normal we must assume 𝜎 = s.

-Since n is small and 𝜎 is estimated from s, we must assume the distribution of all the scores is normal.

-Since n is small and 𝜎 is estimated from s, we must assume that x is greater than s.

 

(c)Assume the assumption of Part b is met. Provide a 95% confidence interval for the mean score of all the students in the class. (Round your answers to two decimal places.)      to     

 

 

Answer & Explanation

Solved by verified expert
Answered by tutorriza on coursehero.com

sec

sectetu

sectet

 

sec

sectetussectetur adipiscing elit. Nam lacinia pulssectetur adipiscing elit. Nam lacinia pulvinar tortor nec facil

 

sec

sssssssssssssssssss

sectetu

sectetsecsecte

CliffsNotes Logo

Unlock access to this and over
10,000 step-by-step explanations

Unlock Explanation

Have an account? Log In

<p>sec</p><p>sectetu</p><p><strong>sectet</strong></p><p> </p><p>sec</p><p><strong>sectetu</strong><em><strong>s</strong></em><strong>sectetur adipiscing elit. Nam lacinia pul</strong><em><strong>s</strong></em><strong>sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facil</strong></p><p> </p><p>sec</p><p><span class="eqneditor-formula" data-value="95\%CI=\left(72.68,\:89.32\right)"><span class="katex"><span class="katex-mathml"></span><span class="katex-html"><span class="base"><span class="strut" style="height:.80556em;vertical-align:-.05556em;"></span><span class="mord">s</span><span class="mord">s</span><span class="mord">s</span><span class="mord mathnormal" style="margin-right:.07153em;">s</span><span class="mord mathnormal" style="margin-right:.07847em;">s</span><span class="mspace" style="margin-right:.2777777777777778em;"></span><span class="mrel">s</span><span class="mspace" style="margin-right:.2777777777777778em;"></span></span><span class="base"><span class="strut" style="height:1em;vertical-align:-.25em;"></span><span class="minner"><span class="mopen delimcenter" style="top:0em;">s</span><span class="mord">s</span><span class="mord">s</span><span class="mord">s</span><span class="mord">s</span><span class="mord">s</span><span class="mpunct">s</span><span class="mspace" style="margin-right:.2222222222222222em;"></span><span class="mspace" style="margin-right:.16666666666666666em;"></span><span class="mord">s</span><span class="mord">s</span><span class="mord">s</span><span class="mord">s</span><span class="mord">s</span><span class="mclose delimcenter" style="top:0em;">s</span></span></span></span></span></span></p><p>sectetu</p><p><strong>sectet</strong>sec<strong>secte</strong></p>

Step-by-step explanation

sectet

sectetur adipiscing elit. Nam lacinia pulv

 

sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus effi

sectetur adipiscing elit. Nam lacinia pulvinar tortor

s

sssecss

sssecsss

sesese
seses
sesesec
sesese
sesese
sesse

sectetur

 

secsssecsssssss

ssssssssssssssecssecssssssecsss

 

sectetur adipiscing elit. Na

ssssecssecsssecssssecsecsssecsssssecsecsssssss

sssssssssssssssssssssssssecsssecssecsssecsssssssecsssssss

sectetu

sectet

 

sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ul

sectetussectetur adipiscing elit. Nam lacinia pulssectetur adipiscing elit. Nam lacinia pulvinar tortor nec facil

sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam

 

sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibu

sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet.

 

sectetur adipiscing e

sectetur adipiscing elit. Nam lac

sectetur adipiscing elit. Nam l

 

sectetur adipiscing elit.sectsectetur adipiscing el

41179969

ssectsectet

 

sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet

ssssssssessesssecssssecs

sssssssssesssssssssssss

sssssssssessssss

sssssssssssssssssss

sectetu

sectetsecsecte

1 attachment
Subscribe to unlock attachment
PNG

Get unstuck with a CliffsNotes subscription

Example CliffsNotes Question and Answer
Unlock every step-by-step explanation, download literature note PDFs, plus more.Get Access

Related Q&A