In a little over a month, from june 5, 1879, to july 2, 1879, albert michelson measured the velocity of light in air 100 times (stigler, annals of statistics, 1977). today we know that the true value is 299,734.5 km/sec. michelson’s data have a mean of 299,852.4 km/sec with a standard deviation of 79.01. (a) find a two-sided 95% confidence interval for the true mean (the true value of the speed of light). (b) what does the confidence interval say about the accuracy of michelson’s measurements?

Which linear inequality is represented by the graph? !

Hye ryung is the president of the local chapter of the american medical students association (amsa). she is organizing local outreach and informational meetings. at her first meeting there are five people present (including herself). every month after that her group grows by 5 people. a. how many members are in the group after 6 months? b. the logistics of hosting and feeding her group at meetings was more complicated than expected. the cost of feeding 5 people at her first meeting was $30, for 10 people it was $35, for 15 it was $45, and after 6 months all of the costs had added up to $100. write a function to model the cost with the number of people attending meetings. c. what connections can you make between the linear growth of the group’s membership and the increasing costs of running meetings?

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )