Please help solve: "In a random sample of 21 people, the mean commute time...", etc.
These are the last 3 questions I have to finish this really long assignment and I just don't get it. Can anyone please help me?
1.) Construct the indicated confidence interval for the population mean μ using a t-distribution. c=0.99, x over bar x=110, s=10, n=27.
The confidence interval is _, _
2.) In a random sample of 21 people, the mean commute time to work was 31.1 minutes and the standard deviation was 7.3minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population μ. What is the margin of error of μ?
Interpret the results.
The confidence interval for the population μ is_, _
3.) Let p be the population proportion for the following condition. Find the point estimates for p and q.
In a survey of 1547 adults from country A, 623 said that they were not confident that the food they eat in country A is safe.
The point estimate for p, p is
The point estimate for q, q is
These are the last 3 questions I have to finish this really long assignment and I just don't get it. Can anyone please help me?
1.) Construct the indicated confidence interval for the population mean μ using a t-distribution. c=0.99, x over bar x=110, s=10, n=27.
The confidence interval is _, _
2.) In a random sample of 21 people, the mean commute time to work was 31.1 minutes and the standard deviation was 7.3minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population μ. What is the margin of error of μ?
Interpret the results.
The confidence interval for the population μ is_, _
3.) Let p be the population proportion for the following condition. Find the point estimates for p and q.
In a survey of 1547 adults from country A, 623 said that they were not confident that the food they eat in country A is safe.
The point estimate for p, p is
The point estimate for q, q is