Acertain type of stainless steel powder is supposed to have a mean particle diameter of u = 15 um. a random sample of87 particles had a mean diameter of 15.2 um, with a standard deviation of 1.8 um. atest is made of h0: u = 15 versus h1: uz 15.a. find the p-value. b. do you believe it is plausible that the mean diameter is 15 um? , or are you convinced that it differs from 15 um? explainyour reasoning.

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.