Spam: A researcher reported that 71.8% of all email sent in a recent month was spam. A system manager at a large corporation believes that the percentageat his company may be 78%. He examines a random sample of 500 emails received at an email server, and finds that 369 of the messages are spam. Canyou conclude that less than 78% of emails are spam? Use both a = 0.10 and a = 0.01 levels of significance and the P-value method and Excel.(a) State the appropriate null and alternate hypotheses.Ho:H₁:This hypothesis test is a (Choose one) test.right tailedleft tailedtwo tailed

Answered: Spam: A researcher reported that 71.8%…

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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The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
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