Mathematics, 01.05.2021 01:00 hopechinn6646
Nurse Jackson examines immunization records for this past winter at the
school where she works.
Got flu Didn't get flu Total
Vaccinated
25
150
175
Not vaccinated 60
65
125
Total
85
215
300
How many students were not vaccinated and did not get the flu?
A. 65
B. 60
C. 150
D. 125
Answers: 3
Mathematics, 21.06.2019 17:40
The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.
Answers: 2
Mathematics, 21.06.2019 19:10
If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.
Answers: 1
Mathematics, 21.06.2019 23:30
Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.
Answers: 1
Nurse Jackson examines immunization records for this past winter at the
school where she works.
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