subject
Mathematics, 30.07.2020 06:01 Queenquestion9130

It has been observed that some persons who suffer acute heartburn, again suffer acute heartburn within one year of the first episode. This is due, in part, to damage from the first episode. The performance of a new drug designed to prevent a second episode is to be tested for its effectiveness in preventing a second episode. In order to do this two groups of people suffering a first episode are selected. There are 55 people in the first group and this group will be administered the new drug. There are 45 people in the second group and this group will be administered a placebo. After one year, 11% of the first group has a second episode and 9% of the second group has a second episode. Conduct a hypothesis test to determine, at the significance level 0.1, whether there is reason to believe that the true percentage of those in the first group who suffer a second episode is different from the true percentage of those in the second group who suffer a second episode?

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 16:10
The box plot shows the number of raisins found in sample boxes from brand c and from brand d. each box weighs the same. what could you infer by comparing the range of the data for each brand? a) a box of raisins from either brand has about 28 raisins. b) the number of raisins in boxes from brand c varies more than boxes from brand d. c) the number of raisins in boxes from brand d varies more than boxes from brand c. d) the number of raisins in boxes from either brand varies about the same.
Answers: 2
question
Mathematics, 21.06.2019 16:30
The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side
Answers: 1
question
Mathematics, 21.06.2019 18:00
Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours
Answers: 3
question
Mathematics, 21.06.2019 20:30
A. plot the data for the functions f(x) and g(x) on a grid and connect the points. x -2 -1 0 1 2 f(x) 1/9 1/3 1 3 9 x -2 -1 0 1 2 g(x) -4 -2 0 2 4 b. which function could be described as exponential and which as linear? explain. c. if the functions continue with the same pattern, will the function values ever be equal? if so, give estimates for the value of x that will make the function values equals. if not, explain why the function values will never be equal.
Answers: 3
You know the right answer?
It has been observed that some persons who suffer acute heartburn, again suffer acute heartburn with...
Questions
question
Health, 12.10.2020 07:01
question
Mathematics, 12.10.2020 07:01
question
History, 12.10.2020 07:01
question
Mathematics, 12.10.2020 07:01
question
Mathematics, 12.10.2020 07:01
Questions on the website: 13722360