part 1
An independent measures study was conducted to determine whether anew medication called "Byeblue" was being tested to see if itlowered the level of depression patients experience. There were twosamples, one that took ByeBlue every day and one that took aplacebo every day. Each group had n = 30. What is the df value forthe t-statistic in this study?
a. 60
b. 58
c. 28
d. There is not enough information
part 2.
Engineers must consider the breadths of male heads when designinghelmets. The company researchers have determined that thepopulation of potential clientele have head breadths that arenormally distributed with a mean of 6.2-in and a standard deviationof 0.8-in. Due to financial constraints, the helmets will bedesigned to fit all men except those with head breadths that are inthe smallest 3.9% or largest 3.9%.
What is the minimum head breadth that will fit the clientele?
min =
What is the maximum head breadth that will fit the clientele?
max =
Do not round your answer.
