Answer:
bob would be 46
Step-by-step explanation:
take 67 subtract 4 to get 63 and divide it by 3 to get 3 groups of 21
add 21 and 21 to get 42+4=46
Answer:
F test
Step-by-step explanation:
Given that we want to study the average weight of children in the US. We collect a random sample of 345 first graders in three different US states
Since there are three samples representing three populations to check whether they have same average weight we have to use F test.
Two sample t test is wrong because here there are three samples.
Paired t test is done for the same item subject to two different tratments
Z test is done for comparing of a mean with population mean or proportion if the population standard deviation is known.
Hence here since the number of groups are more than two, only F test is best suited to determine whether there is a difference in the average student weight among the three states
Answer:
25
Step-by-step explanation:
90 - 65 = 25
For this case we have the following decimal:
8.3
To find the fraction equivalent expression, what we must do is multiply the decimal by 10 and divide the result by 10.
We have then:
Rewriting we have:
Answer:
The decimal written as a fraction is given by: