Mathematics, 14.07.2020 01:01, kihgff5711
The charitable foundation for a large metropolitan hospital is conducting a study to characterize its donor base. In the past, most donations have come from relatively wealthy individuals; the average annual donor income in the most recent survey was right at $100,000. The foundation believes the average has now increased. A random sample of 200 current donors showed a mean annual income of $103,157 and a standard deviation of $27,498.a. To perform this study, we should form a null hypothesis stating that the average is 100,000. (Please fill in only one of the following: "less than", "less than or equal to", "equal to", "greater than", "greater than or equal to". Please do not use symbols.)b. At the 10% significant level, the p-value/statistics is (Please keep three decimal points) so we should the null hypothesis (Please only fill in "reject" or "not reject".).c. Hence, we may conclude that the average increased (Please only fill in "has" or "has not") and the probability that our conclusion is correct is at least percent.
Answers: 1
Mathematics, 21.06.2019 15:30, reagriffis24
What is the domain and range of each function 1. x (3, 5, 7, 8, 11) y ( 6, 7, 7, 9, 14) 2. x (-3, -1, 2, 5, 7) y (9, 5, 4, -5, -7)
Answers: 2
Mathematics, 21.06.2019 22:30, evanwall91
The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?
Answers: 1
The charitable foundation for a large metropolitan hospital is conducting a study to characterize it...
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