Mathematics, 15.04.2020 02:53 katiepotter
The Heldrich Center for Workforce Department found that 45% of Internet users received more than 10 email messages per day. Recently, a similar study on the use of email was reported. The purpose of the study was to see whether the use of email increased.
a. Formulate the null and alterative hypotheses to determine whether an increase occurred in the proportion of Internet users receiving more than 10 email messages per day.
b. If a sample of 420 Internet users found 208 receiving more than 10 email messages per day, what is the p-value?
c. Using α =.05, what is your conclusion?
d. Apply the critical value method when a = .01.
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