Answer:
6
Step-by-step explanation:
I pretty sure that its 6 if nt sorry
I’m pretty sure it’s 86, because you need to subtract 2 from the first side then you have 86 = X
Answer:
Yes
Step-by-step explanation:
First, suppose that nothing has changed, and possibility p is still 0.56. It's our null hypothesis. Now, we've got Bernoulli distribution, but 30 is big enough to consider Gaussian distribution instead.
It has mean μ= np = 30×0.56=16.8
standard deviation s = √npq
sqrt(30×0.56×(1-0.56)) = 2.71
So 21 is (21-16.8)/2.71 = 1.5494 standard deviations above the mean. So the level increased with a ˜ 0.005 level of significance, and there is sufficient evidence.
Hope this helps! Mark me Brainliest plsssss
Since it is under 985,000, you would round it down. So your answer rounded to the nearest ten thousand would be 980,000
