"a "and "b^2-4ac" must be negetive
Answer:
Step-by-step explanation:
<em>Step 1: Define significance level</em>
In this hypothesis testing problem, significance levels α is selected: 
, the associated z-value from Laplace table:
Φ(
) = α - 
=> = 
<em>Step 2: Define null hypothesis (</em>
<em>) and alternative hypothesis (</em>
<em>)</em>
: rate of flu infection 
= 8.3% or 8.3/100 = 0.083
: rate of flu infection < 8.3% or 8.3/100 = 0.083
<em>Step 3: Apply the formula to check test statistic:</em>
with 
is actual sampling percent, is rate of flu infection of , 
is number of samples.
The null hypothesis will be rejected if 
<em>Step 4: Calculate the value of K and compare with </em>
We have 
=>This is good evidence to reject null hypothesis.
=> The actual rate is lower. (As states)
Hope this helps!
:)
Answer:
Step-by-step explanation:
The ratio is 4:6 4 papaya to 6 pineapple
This turns out to be for every 1 cup of papaya juice you have 1.5 cups of pineapple juice.
If you have 24 cups of pineapple juice divide 24 by 1.5 to get 16 cups of papaya juice. 16:24.
Answer:
No
Step-by-step explanation:
There needs to be one dot on 3, one dot on 4, two dots on 5, and two dots on 6.
Your question is vague. There is not enough information. How many balls are in the box? 15 boxes would cost 109.80 thought.
