Given that,
Sample size= 83
Mean number= 39.04
Standard deviation= 11.51
We know the critical t-value for 95% confidence interval which is equal to 1.989.
We also know the formula for confidence interval,
CI=( mean number - critical t-value*standard deviation/(sample size)^(1/2), mean number + critical t-value*standard deviation/(sample size)^(1/2))
So, we have
CI= (39.04 - 1.989*11.51/83^(1/2), 39.04 + 1.989*11.51/83^(1/2)
CI= (39.04 - 2.513,39.04 + 2.513)
CI= (36.527,41.553)
Therefore, 95% confidence interval for these data is (36.527,41.553), and this result interpret that the true value for this survey sample lie in the interval (36.527,41.553).
5/54 this should be your answers hope this helps
Answer:
Brainliest!!! :) XD =D
Step-by-step explanation:
m<Q = 93 m<R = 87
the screenshot shows the answers
X % ==> $180.00
100% ==> $135.00
So : 180.00*100/135.00 = 133.33 %.
Hope this helps !
Photon
The correct answer is c have a great day
