Answer:
The 80% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is n = 23
The sample mean is
The standard deviation is
From the question we are told the confidence level is 80% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
=>
Generally 80% confidence interval is mathematically represented as
=>
Answer:
x=1
Step-by-step explanation:
4^x+3=7
subtract 3
4^x=4
x=1
The awnser to your question is 36 because 10+10=20+8+8=36
Answer:
a = 18
Step-by-step explanation:
36 / 2 = 18
18 + 18 =36