Answer:
1
Step-by-step explanation:
Answer:
a. no, there are no sufficient data to use
b. assumption b is right
Step-by-step explanation:
a. for the standard deviation to be calculated at 99% confidence, the data needed should be the mean (given), the variate value to be calculated for(not given), the standard deviation(not given), the z value of the normal distribution ( not given),
since there are too many unknown, the data given are not sufficient to calculate.
b. validity of this interval requires that coating layer thickness be at least approximately normally distributed.
Answer:
A(7,5)
Step-by-step explanation:
This is correct because the area of a triangle is b × h = a.
Answer:
1.923 x 10
Step-by-step explanation:
19 and 23 hundredths =19.23
Any number that we can write as a decimal number, between 1.0 and 10.0, multiplied by a power of 10, is said to be in standard form.
since the highest value is in the 10s place you'll have to pull out ten
and 1.923 times 10 equals 19.23
so 1.923 x 10 is equal to 19.23 written in standard form
Def the second one because think about it this way 1.5 x 8 = 12
There's your answer