Test statistic,
t = (xbar - mu)/(s/sqrt(n))
t = (48.95 - 50)/(4.42/sqrt(25))
t = -1.19
Question Last year, during an investigation of the time spent reading emails on a daily basis,...
Last year, during an investigation of the time spent reading e-mails on a daily basis, researchers found that on Monday the average time was 50 minutes. Office workers claim that with the increased spam and junk mail, this time has now increased. To conduct a test, a sample of 25 employees is selected with the following results: sample mean = 48.95 minutes and sample standard deviation = 4.42 minutes. Calculate the appropriate test statistic to test the hypothesis that the...
Last year, during an investigation of the time spent reading emails on a daily basis, researchers found that on Monday the average time was 50 minutes. Office workers claim that with the increased spam and junk mail, this time has now increased. To conduct a test, a sample of 25 employees is selected, with the following results: sample mean = 51.05 minutes and sample standard deviation = 4.42 minutes. Test the hypothesis that the time has increased from last year...
round all final answers to the nearest two decimals. Use appropiate symbols and units of measurement. Last year, the mean dollar spent for online purchases on the AMAZING WEBSITE for the week (7 days) before Father's Day among customers who use their Vista Charge Card was $260. The population standard deviation is not known. Because of increased use of on-line purchasing, Vista's Vice President of Electronic Marketing believes that purchasing on the AMAZING WEBSITE has decreased. He randomly selects 150...
Please answer the marked questions.......... Please show your work............. that all young adult men is greater the IC than 50 min d the 65 74 66 37 45 68 64 50 48 65 58 55 52 63 59 57 74 65 the 11.38 1138 The club professional at a difficul that his course is so tough that t course boasts average golfer loses a dozen or more golf balls d ng a round of golf. A dubious golfer sets out...
i need help on question 3 to 22 please. Midterm ex review. MATH 101 Use the following information to answer the next four exercises. The midterm grades on a chemistry exam, graded on a scale of 0 to 100, were: 62, 64, 65, 65, 68, 70, 72, 72, 74, 75, 75, 75, 76,78, 78, 81, 82, 83, 84, 85, 87, 88, 92, 95, 98, 98, 100, 100,740 1. Do you see any outliers in this data? If so, how would...
please Identify the key points and main thesis of the article 2. Describe the skills you will need to develop to manage the hospital of the future. use critical analysis doing these questions Suggestion for writing assignmemnt make believe the reader has never read the article -what are the key points you would want the reader to know in order to understand the hospital of the future. In addition, managers, executives do not have time to read--so again what key...