Question 10 (1 point) You direct a streaming video site. Industry population statistics show that consumers stream 27 hours of media per week on average (standard deviation = 8 hours). A person is classified as a heavy user if he or she is in the upper 20% in terms of hours of usage. How many hours must a consumer stream media per week in order to be classified as a heavy user? 0 a) 27 hours or more 0 b) 33.72 hours or more 0 c) 33.72 hours or less Q d) 35 hours or more Question 4 (1 point} You are an accounts analyst for an electrical billing company. According to industry statistics, for the three hottest months of summer, homeowners spend on average $441.84 for total electrical utility cost (standard deviation of $90). What is the probability that a household will spend between $400 and $500? 0 a} .5806 O b) .3210 O c) .4194 Q d) .7409 Question 5 (1 point} You direct a streaming video site. Industry population statistics show that consumers stream 27 hours of media per week on average (standard deviation = 8 hours). What percentage of consumers spend more than 40 hours per week streaming media? 0 a) 89.68% 0 b) 94.84% C) c) 10.32% C) d) 5.16% Question 6 (1 point) You are an accounts analyst for an electrical billing company. According to industry statistics, for the three hottest months of summer, homeowners spend on average $441.84 for total electrical utility cost (standard deviation of $90). How much does a household have to spend to be in the top 20% of electrical users? 0 a) between $531.84 and $621.84 0 b) $517.44 or more 0 c) $517.44 or less 0 d) $531.84 or more Question 7 (1 point) A normally distributed data set has a mean of 5,000 and a standard deviation of 450. What is the probability of drawing a score from the sample that is between 4,100 and 5,900? O a) .9544 O b) .1587 O c) .9974 Q d) .6826 Question 8 {1 point) The average time a customer spends reviewing and selecting product features and completing a transaction on your website is 49 minutes. Assume a standard deviation of 16 minutes and that the times are normal distributed. What is the probability that a customer will spend at least 1 hour to complete the transaction? 0 a) .2451 O b) .69 O c) .1170 0 cl) .7549 Question 9 {1 point) The average time a customer spends reviewing and selecting product features and completing a transaction on your website is 49 minutes. Assume a standard deviation of 16 minutes and that the times are normal distributed. For the 10% who spend the most time reviewing and completing the transaction, how much time do they spend? Q a) 1.28 O b) 69.48 minutes or more 0 c) 69.48 minutes or less 0 d) 30.52 minutes or more
