### Basics of confidence interval numbers mean

Assignment Help Basic Statistics
##### Reference no: EM13102515

Assume you are the manager of a mustard seed factory in Colombia. Your company has received complaints that there isn't enough mustard seed in your economy size packages, which should have 1.7 ounces. You ask your foreman and chief operating officer Juan Valdez to test the new mustard seed packaging machine you are installing. He runs a sample of 36 packages, with the results of package sizes in ounces:

1.5 1.7 1.8 1.9 1.7 1.75
1.75 1.66 1.81 1.65 1.77 1.75
1.8 2.2 1.7 1.65 1.88 1.6
1.7 1.7 1.6 1.65 1.65 1.65
1.8 1.91 1.7 1.59 1.76 1.65
1.3 2.0 1.91 1.65 1.8 1.8

A. Calculate a 95% confidence interval on the average weight of packaged mustard seed. Explain very carefully to the packaging workers what the 95% confidence interval numbers mean. Include your Excel output. Is there anything you would want to note for management?

### Previous Q& A

#### Probability problem of big ten university

An alcohol awareness task force at Big-Ten university sampled 20 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying

Use the Poisson distribution to find the indicated probabilities. Currently 11 babies are born in the village of West Point (population of 760) each year.

#### Write original comparison-distinguish similarities of items

Write down the original comparison/contrast rough draft. You may distinguish two items that are similar but also have dissimilarities, or you may distinguish two items.

#### Performing a nonparametric test for a difference

Suppose that you wish to perform a nonparametric test for a difference among the medians of three or more independent populations. Which of these tests would be appropriate?

#### Probability of a decreasing employment

Let the probability of a decreasing employment be 0.6 and the probability of a positive economic trend 0.5. Further, assume that the probability of a decreasing employment given a negative economic trend is 0.7.

#### Determine the percentage of males and females

The mean annual salaries paid to male and female employees of the company were EURO 32.000,- and 24.000,- respectively. Determine the percentage of males and females employed by the company.

#### Find sum of the squares of observations

Given that the mean of 100 observations is 42.5 and that their standard deviation is 6.313, find the sum of the squares of the observations.

#### How long are the strings

Two small metallic spheres, each of mass m = 0.212 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.9 nC, and they come to equilibrium when each string is ..

#### Explain major structures of brain and structure-s function

Write down 500- to 750-word response explaining five major structures of brain and each structure's function(s) in human body. Ensure to comprise the following brain structures.

#### Determine the magnitude and direction of the electric field

Two plastic semicircular rods are arranged into a complete circle with radius 8.5cm. The top half has charge of +15 pC, and the bottom half has charge of -15pC. Determine the magnitude and direction of the electric field at the center of the circl..

### Similar Q& A

#### Description of control limits

A cola dispensing machine is set to depense 9 ounces per cup with a standard deviation of .5 oz .THe manufacturer would like to set the control limits so that for samples of 16,

#### Null hypothesis for equal levels of support

A poll found that 38% of male voters and 46% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be

#### Confidence interval for the mean score

The 2009 National Assessment of Educational Progress (NAEP) gave a mathematics test to a random sample of eighth-graders in Texas. The mean score was 287 out of 500. To give a confidence interval for the mean score of all Texas eighth-graders, you..

#### Evaluate p-value for the f test for main effect of smoking

A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study and gender differences were also to be investigated. One of the variables measured was the heart rate after..

#### Information about anova and least squares

What kind of correlation do you expect to find between annual income and amount spent on car? Will it be positive or negative?

#### Probability of getting exactly 50 percent heads

What happens to the probability of getting exactly 50% heads?

#### Delivery format-the general social survey

Delivery Format The General Social Survey asks, "About how often did you have sex in the past 12 months?" About 47% of respondents indicated they had sex at least once a week.

#### Probability when mean and standard deviation given

Suppose the people have weights that are normally distributed with a mean of 164lb and a standard deviation of 30lb. Find the probability?

#### Determine the probability of score for student

Scores on certain nationwide college entrance examination follow normal distribution with mean of 500 and a standard deviation of 100. Determine the probability that student will score?

#### Seasonal adjusted sales for the quarter

The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 1.05. What are the seasonally adjusted sales for the quarter?

#### Three periods double moving average method

A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:

#### Confidence interval for the mean number of hours

A researcher wants to determine a 95% confidence interval for the mean number of hours that UMKC students spend doing homework per week. 