The polynomial has two terms and is written in standard form, answers 1 and 4.
Answer:
With a 0.01 significance level and samples of 50 and 40 cofee drinkers, there is enough statistical evidence to state that the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers.
The test is a one-tailed test.
Step-by-step explanation:
To solve this problem, we run a hypothesis test about the difference of population means.

The appropriate hypothesis system for this situation is:

Difference of means in the null hypothesis is:


![$$The calculated statistic is Z_c=\frac{[(4.35-5.84)-0]}{\sqrt{\frac{1.20^2}{50}+\frac{1.36^2}{40}}}=-5.43926\\p-value = P(Z \leq Z_c)=0.0000\\\\](https://tex.z-dn.net/?f=%24%24The%20calculated%20statistic%20is%20Z_c%3D%5Cfrac%7B%5B%284.35-5.84%29-0%5D%7D%7B%5Csqrt%7B%5Cfrac%7B1.20%5E2%7D%7B50%7D%2B%5Cfrac%7B1.36%5E2%7D%7B40%7D%7D%7D%3D-5.43926%5C%5Cp-value%20%3D%20P%28Z%20%5Cleq%20Z_c%29%3D0.0000%5C%5C%5C%5C)
Since, the calculated statistic
is less than critical
, the null hypothesis should be rejected. There is enough statistical evidence to state that the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers.
Answer:
Area is 14.13
Step-by-step explanation:
area of sector = p/360 x πr²
p is the angle
45/360 x 3.14 x 6 x6
5/40 x 113.04
1/8 x 113.04
113.04/8 = 14.13
Answer:
140 mm²
Step-by-step explanation:
SA = 2(5x5) + 2(5x5) + 2(4x5)
= 50 + 50 + 40
= 140 mm²
Answer:
blocking is not suggested
Step-by-step explanation:
blocking usually affects age, gender, socioeconomic status, race or religion.