Mathematics, 21.11.2019 23:31 brenton14
First data corp. records indicate that in 2005 43% of adult email users received a phishing email. a phishing email replicates an authentic site for the purpose of stealing personal information such as account numbers and passwords. suppose a random sample of 800 adults will be surveyed on whether they have received phishing emails to determine recent trends. use this information to answer questions 1 through 3.
1. give the mean and standard deviation of the sample distribution of hatp. give your answers in decimal form. (example: 0.398)
mean (round to two decimal places) =
standard deviation (round to three decimal places) =
determine the probability that more than 45% of those in a survey would have received a phishing email.
2. what is the z-score for a 45% probability? (round to three decimal places, example: 3.456)
z =
3. what is the probability that more than 45% of those in a survey would have received a phishing email? give your answer in decimal form, rounding to three decimal places. (example: 0.398)
Answers: 1
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First data corp. records indicate that in 2005 43% of adult email users received a phishing email. a...
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