The trip was 6 hours long.
Step-by-step explanation:
Given,
The time to go to the island = 1 hours.
The return trip took 3/4 of the time of the original trip.
To find the time of the trip.
Let,
The time of the original trip is x hours.
The time for returning =
According to the problem,
1 + = x
or, x - =
or, =
or, x = ×4 = 6 hours
Hence,
The trip was 6 hours long.
Answer:
The difference of the means is not significant because the re-randomizations show that it is within the range of what could happen by chance.
Step-by-step explanation:
Given that:
The treatment group using Spray A reported a mean of 3.5 mosquito bites.
The treatment group using Spray B reported a mean of 5.6 mosquito bites.
After the data are re-randomized; the differences of the means are shown in the dot plot. The dot plot is attached in the file below;
The best conclusion that can be make based on the data from the dot plot is :
The difference of the means is not significant because the re-randomizations show that it is within the range of what could happen by chance.
D. 140 cm, because 5 x 4=20 and 20 x 7 is 140.
Maybe use a Calculator and multiple the two number?