Answer:
b. Right-Tailed
Step-by-step explanation:
This hypothesis test have a claim that the proportion of all small businesses that fail is higher than 20%. The alternative hypothesis is then written as:
If the sample outcome gives a test statistic that is higher than the critical value (z>z_c), it will fall in the rejection region and the null hypothesis, that states that the proportion is not different from 20%, will be rejected.
As the rejection region comprises all the values in the right tail, above the critical value, we can conclude this is a right-tailed test.
Answer:
3x² - 11x - 4 =0
Step-by-step explanation:
The solution to the polynomial is;
X= -1/3 and x = 4
For x = -1/3, we have (x + 1/3) = 0
For x = 4, we have (x - 4) = 0
Combining the two equations we have;
(x + 1/3)(x - 4) = 0
Now expand the equation
(x + 1/3)(x - 4) = 0
x² - 4x + 1/3x - 4/3 = 0
Multiplying by 3 to eliminate the denominator,
3x² - 12x + x - 4 = 0
3x² - 11x - 4 =0
Step-by-step explanation:
4/5=0.8
whatever expressions that equals 0.8