Karin wants to use the distributive property to mentally find the value of 19⋅42+19⋅58. Which expression can she use?
2 answers:
Answer : The expression she use can be,
Step-by-step explanation :
Distributive property Law : It says that multiplying a number by the group of numbers added together is the same as doing each multiplication separately.
For example:
3 × (2 + 4) = 3×2 + 3×4
As we are given the expression:
Thus, the expression she use can be,
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Answer:
Sample size should be atleast 55320
Step-by-step explanation:
Given that a group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students spent studying per week.
population standard deviation
Std error =
Margin of error for 95%
=
Since sample size is number of items it cannot be indecimal.
So we can round off to the next high integer on a safer side.