The first one is B hope this helps
Answer:
Test statistic = - 2.29
Pvalue = 0.0110
Step-by-step explanation:
The hypothesis :
H0 : p = 0.3
H1 : p < 0.3
Test statistic :
z=pˆ−p/√p(1−p)/n
pˆ = 0.2
Z = (0.20 - 0.30) / √(0.30(1 - 0.30) / 110
Z = - 0.1 / √0.0019090
Z = - 0.1 / 0.0436931
Z = - 2.29
Test statistic = -2.29
The Pvalue :
P(Z < -2.29) = 0.0110
Answer:28:53 is M
N is 28:45
Step-by-step explanation:
I’m not fully sure just trying to help
Standard deviation 12,16,22,23,34,44,46,47,48,64,67,73,83,89, round to nearest tenth
RideAnS [48]
Answer: 23.9
Step-by-step explanation:
1. First, you must calculate the mean, as following:
2. Now, you should substract the means obtained to every single number of the set and then square it. Add all of them:
3. The mean of this is:
4. The square root of this result is:
5. To the nearest tenth, the result is: 23.9
Answer:A repair bill for a car is $648.45. The parts cost $265.95. The labor cost is $85 per hour.
Step-by-step explanation:
had this question
