Math

StatisticsQ&A LibraryIn each of Exercises, we provide a sample mean, sample size, sample standard deviation, and confidence level. In each exercise,a.use the one-mean t-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn.b.obtain the margin of error by taking half the length of the confidence interval.c.obtain the margin of error by using the formula ta/2•s/vn.x = 30, n = 25, s = 4, confidence level = 90%Question

Asked Jan 24, 2020

1 views

In each of Exercises, we provide a sample mean, sample size, sample standard deviation, and confidence level. In each exercise,

a.use the one-mean t-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn.

b.obtain the margin of error by taking half the length of the confidence interval.

c.obtain the margin of error by using the formula ta/2•s/vn.

x = 30, n = 25, s = 4, confidence level = 90%

Step 1

a)

*Critical value*:

For 90% level of significance,

Step 2

Step 3

**b.**

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Briefly, for a normally distributed variable, how do you obtain the percentage of all possible obser...

A: The procedure for obtaining the percentage of all the possible observations that lie within the spec...

Q: Composite Sampling. Exercises 33 and 34 involve the method of composite sampling, whereby a medical ...

A: GivenA person aged 15-49 are infected with HIV is 1%.The probability that a person aged 15 - 49 is w...

Q: In Exercises 21–24, assume that when adults with smartphones are randomly selected, 54% use them in ...

A: According to the provided information,

Q: Here is a data set that has a nearly normal distribution. data data data data 45.5 51.33 28.7...

A: The provided data set has a nearly normal distribution. It is decided that each class will include t...

Q: A variable has a mean of 100 and a standard deviation of 16. Four observations of this variable have...

A: a.The observed value of standardize version of x is obtained below:From the given information, the v...

Q: What is the median of a continuous random variable? What is the median of an exponential distributio...

A: Click to see the answer

Q: State the empirical rule for variables.

A: The empirical rules for variables are as follows:68% of all possible observations lie within one sta...

Q: Emergency Room Traffic. Desert Samaritan Hospital in Mesa, Arizona, keeps records of its emergency-r...

A: (a)The density curve of the variable is,

Q: What is a density curve, and why are such curves important?

A: Click to see the answer