Answer:
23.2
Step-by-step explanation:
15.7 - (-7.5) = 15.7 + 7.5 (because if there's 2 negative sign it makes the number positive)
15.7 + 7.5 = 23.2
Yeah where’s the question you didn’t add anything
No. Since we cannot factor,
.
Hope this helps.
r3t40
Answer:
See explaination and attachment
Step-by-step explanation:
Given the parameters we have, we want to Construct a 90% confidence interval for the true mean of the population.
Hence, making use of these parameters;
sample size =100
Std deviation =25
mean if the sample=253.
Therefore solving for 90% confidence interval for the true mean of the population. We will apply a formula.
Please kindly check attachment gor the step by step solution for all the questions.
Answer:
9 plus 11 plus 12 =
Step-by-step explanation:
x is 22