Complete Question
The complete question is shown on the first uploaded image
Answer:
The 95% confidence interval is
This means that there is 95% chance that the true population mean is within this interval
Step-by-step explanation:
From the question we are told that
The sample size is n = 30
The sample mean is
The population standard deviation is
Given that the confidence level is 95% then the level of confidence is evaluate as
Next we obtain the critical value of from the normal distribution table , the values is
Generally the margin of error is mathematically represented as
substituting values
The 95% confidence interval is mathematically represented as
substituting values
3 hour 30 minutes : 36 minutes
1 hour = 60 minutes
3 hour = 3×60 minutes = 180 minutes
3hour 30 minutes = 180 minutes + 30 minutes
= 210 minutes
210 minutes : 60 minutes
3 hours 30 minutes : 60 minutes = 6:2
It is implied in the given that the tree grows linearly. The equation can be expressed as,
h = mx + b
where m and b are the slope and y-intercept. Convert the 8 in first to feet for the units to be uniform. 8 inches equal 0.75 ft. From the given, the final equation would be,
h = (3/4)x + 5