Math

StatisticsQ&A LibrarySuppose, according to a 1990 demographic report, the average U. S. household spends $90 per day. Suppose you recently took a random sample of 30 households in Huntsville and the results revealed a mean of $84.50. Suppose the standard deviation is known to be $14.50. Using a 0.05 level of significance, Create the 95 % Confidence Interval for the population mean using the information above?Question

Suppose, according to a 1990 demographic report, the average U. S. household spends $90 per day. Suppose you recently took a random sample of 30 households in Huntsville and the results revealed a mean of $84.50. Suppose the standard deviation is known to be $14.50. Using a 0.05 level of significance, Create the 95 % Confidence Interval for the population mean using the information above?

Tagged in

Find answers to questions asked by student like you

Q: The Excel data file named FoodIndustry.xlsx show the company/chain name, the average sales per store...

A: Copy and Paste data onto an Excel worksheet as shwon below.

Q: Stress test results-For a group of 12 men subjected to a stress test situation, the average heart ra...

A: It is given that mean and standard deviation are 109 and 4, respectively.In the given case,

Q: Please show steps for TI 84 as well.

A: Introduction:Suppose a random variable X has mean μ and standard deviation, σ. Then, the z-score cor...

Q: Questic Among 21-to 26-year-olds, 36% say they have used a computer while under the influence of alc...

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have s...

Q: An effect size of .25 would be considered?

A: Solution:The conditions for the effect size are:If d <0.3, then the effect size is small.If 0.3&l...

Q: Determine the area under the standard normal curve that lies between (a) Z= - 0.41 and Z=0.41, (b) Z...

A: (a).The area that lies between Z= -0.41 and Z= 0.41 is calculated as shown below:

Q: In a program designed to help patients stop smoking, 195 patients were given sustained care, and 8...

A: The level of confidence is provided as 95% or 0.95. Therefore, the level of significance is equal to...

Q: Possion Distribution Suppose that on the average, 8 students enrolled in a small liberal arts colleg...

A: Let us define the random variable X as students enrolled in a small liberal arts college have their ...

Q: According to a study done by a university student, the probability a randomly selected individual w...

A: c) From the given information, the probability a randomly selected individual will not cover his or ...