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We define random variable X to be the number of parts that arrive at an environmental testing station in a 1-hour period.   Historical data shows that the mean number of these parts that arrive in a 1-hour period is equal to 29 and X is a Poisson random variable.  This copywritten question is part of a quiz or exam at Arizona State University. It may not be reproduced or posted without the permission of Dr. Linda Chattin The probability that 20 or fewer of these parts arrive in a 30-minute period is _______.  Express your answer to four decimal places.   You must do this problem using the online calculator, ti84calc.com.  You will not receive any credit for this question if you do not use the online calculator, even if you get it right.  

Suppose we have a random variable with the F pdf with u = 10 and v = 20 degrees. The probability that this random variable is bigger than 2.7727 is______ to 3 decimal places.  This copywritten question is part of a quiz or exam at Arizona State University and may not be reproduced or posted on any site without the permission of Dr. L. Chattin     You must do this problem using the online calculator, ti84calc.com.  You will not receive any credit for this question if you do not use the online calculator, even if you get it right.

The time until the first arrival of a customer to Piggly Wiggly Market after it opens can be modeled as an exponential random variable with a mean equal to 3.4 minutes.  The store opens at 8 am.  This copywritten question is part of a quiz or exam at Arizona State University. It may not be reproduced or posted without the permission of Dr. Linda Chattin.   Determine the probability that the first customer arrival occurs after 8:0[x] am.   Express your answer to four decimal places.   You must do this problem using the online calculator, ti84calc.com.  You will not receive any credit for this question if you do not use the online calculator, even if you get it right.

Suppose we have a random variable with the F pdf with u = 10 and v = 20 degrees. The probability that this random variable is bigger than 2.7727 is______ to 3 decimal places.  This copywritten question is part of a quiz or exam at Arizona State University and may not be reproduced or posted on any site without the permission of Dr. L. Chattin     You must do this problem using the online calculator, ti84calc.com.  You will not receive any credit for this question if you do not use the online calculator, even if you get it right.

The mean breaking strength of yarn used in manufacturing drapery material is an important measurement.  A random sample of 32 specimens is tested. The average breaking strength of the sample was 100.6 psi and the variance of the sample was 4.41 psi2 . This copywritten question is part of a quiz or exam at Arizona State University and may not be reproduced or posted on any site without the permission of Dr. L. Chattin. A two-sided 95% CI on the population mean yields a lower bound equal to _______ psi to 3 decimal places.   You must do this problem using the online calculator, ti84calc.com.  You will not receive any credit for this question if you do not use the online calculator, even if you get it right.  

The student uploads a pdf of their free response to the comment section work within 5 minutes of ending the testing session. {2] Immediately after hitting submit, and ending your honor lock session, please upload a PDF of your work for the free response questions in the comment section of this exam.  You may use any method of your choosing to create the PDF.   The submission of the PDF to the comment section should be no more than 5 minutes after your exam was submitted and your Honorlock session ended. Your work must match what is in the recordings that are uploaded.   You still must do this even though you are submitting recordings

A 74-year-old woman is brought in by her daughter for gradually worsening memory over the last 18 months. She frequently misplaces objects, repeats questions, and recently got lost driving in her own neighborhood. MoCA (Montreal Cognitive Assessment) score for memory is significantly decreased at 19/30, and MRI shows hippocampal atrophy. Labs reveal normal TSH, B12, and electrolytes. What is the most likely underlying pathophysiologic process associated with this clinical presentation?

A 62-year-old woman presents with 6 weeks of worsening memory, personality changes, and new headaches that are worse in the morning. Family reports intermittent nausea and two brief episodes of staring spells. On exam she has a right visual field cut. What is the most likely cause of her symptoms?

Please upload short recordings clearly showing each page of your work to the final question below. You should have four short recordings, one for each Free Response Questions. For this question, please submit your hand-written work using the record tool in the given menu. Using your WEBCAM, please submit your handwritten work by taking a video picture.  Use the “Record/Upload Media” option in the entry box. Choose “Record.” Please take your time and make a clear video picture by pressing the START RECORD button once and as soon as the countdown is over press FINISH. If you have trouble, please connect to Honorlock support by clicking the blue button with the speech bubble. They will help and document your attempt to correct the situation. Tell the support agent you are done with the test and are having trouble submitting your work. They will help you momentarily bypass the blocking program Honorlock uses to get your file uploaded properly. Remember: You expected to make every effort to submit your work to Canvas before time expires. The time element is part of the assessment. Should the exam close before you can upload your recordings, you should email me your work immediately at rmarkatos@dwight.global. Your proactivity and ability to explain your actions will ensure that the instant is not viewed as an Honor Code violation.

The student uploads a pdf of their free response to the comment section work within 5 minutes of ending the testing session. {2] Immediately after hitting submit, and ending your honor lock session, please upload a PDF of your work for the free response questions in the comment section of this exam.  You may use any method of your choosing to create the PDF.   The submission of the PDF to the comment section should be no more than 5 minutes after your exam was submitted and your Honorlock session ended. Your work must match what is in the recordings that are uploaded.   You still must do this even though you are submitting recordings