Answer:
The p value for this case is given by:
For this case the p value is higher than the significance level given so we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean is significantly less than 409
Step-by-step explanation:
Information given
represent the sample mean
represent the population standard deviation
sample size
represent the value to verify
represent the significance level for the hypothesis test.
z would represent the statistic (variable of interest)
represent the p value
Hypothesis to test
We want to verify if the true mean is less than 409, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic for this case is given by:
(1)
Replacing the info we got:
The p value for this case is given by:
For this case the p value is higher than the significance level given so we have enough evidence to FAIL to reject the null hypothesis and we can't conclude that the true mean is significantly less than 409
Answer: 283
Step-by-step explanation:
To find the median, you have to first arrange the figures in the distribution in ascending order:
210, 249, 316, 443
As this is an even distribution, the Median will be found by adding up the second and third numbers and then dividing by 2:
= (249 + 316) / 2
= 283
Answer:
energy
Step-by-step explanation:
or electricity
Answer:
0
Step-by-step explanation:
8x+8y
x=12 and y =-12
8(12) + 8(-12)
96 - 96
0
Answer:
105
Step-by-step explanation:
Remember PEMDAS
1/2 x 4 = 2
2 x 48 = 96
You should now have 9 + 96
9 + 96 = 105