### Confidence interval for proportion of applicants that fail

Assignment Help Basic Statistics
##### Reference no: EM1387486

As a condition of employment, Fashion Industries applicants must pass a drug test. Fashion Industries randomly tests its employees throughout the year. Of the last 225 applicants 28 failed the test.

1) Develop a 90 percent confidence interval for the proportion of applicants that fail the test. (Round your answers to 2 decimal places.)

For the applicants the confidence interval is between and .

2) Would it be reasonable to conclude that more than 11 percent of the applicants are now failing the test?

### Previous Q& A

#### Show the conservation of mechanical energy

A 150 g ball and a 220 g ball are connected by a 36{rm cm}-long, mass less, rigid rod. The balls rotate about their center of mass at 130 rpm. What is the speed of the 150 g ball.

#### Explain how much income must michael report due to the use

His ability to stay in the hotel without charge is based on the availability of empty rooms. Explain how much income must Michael report due to the use of the San Francisco hotel room?

#### Genetics probability questions

Vitamin D resistant rickets is usually an X-linked dominant situation. The disease is caused by mutations the PHEX gene and results in bone deformity and bow leggedness.

#### Corporatio rid of the variability in its lead-time per order

Suppose the corporation could pay C dollars per year to get rid of the variability in its lead-time per order. Illustrate what is the most it would be willing to pay to do this (and still have a 95% service level)?

#### Determine the moons orbital speed

A motorcycle has a constant speed of 21.0 m/s as it passes over the top of a hill whose radius of curvature is 132 m. The mass of the motorcycle and driver is 343 kg. Determine the magnitude of the normal force that acts on the cycle.

#### Discuss some possible clues that might tip off a manager

Discuss some possible clues that might tip off a manager that an employee may be initiating IP theft

#### Normal approximation to the binomial distribution

Use the normal approximation to the binomial distribution and part (b) to answer the following question: What is the probability that a seat will be available for every person who shows up holding a reservation?

#### Illustrate what are the aspects of market management

A corporation has total fixed costs of \$180,000 and a contribution margin ratio of 30%. Explain how much sales are necessary to break even?

#### Analyzing internet respiratory diseases

There are a many respiratory diseases that can affect a person's ability to maintain a healthy respiratory system.

#### Identify the ip rights that are owned by an organization

Identify the IP rights that are owned by an organization you currently or formerly have worked at.

### Similar Q& A

#### Finding degree of confidence for interval

Use value you found in part a to find out degree of confidence for interval 65.65

#### Probability in case of style of pottery

Santa Fe black on white is a style of pottery that occurs in about 61% of the pot shards found in the Bandelier National Monument area.

#### Conclusion that the mean weight is greater

At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.

#### Fda experiment to achieve an estimation of the mean

Assume you want to repeat the FDA experiment to achieve an estimation of the mean μ of the amount of caffeine content of a cup of coffee.

#### Identification of continuous and discrete random variables

Identify each of the random variables as continuous or discrete.

#### Confidence interval for the population mean weight

Find a 90% confidence interval for the population mean weight of all such turtles.

#### Determining least squares regression line for data

Using equation presented calculate SST,SSE and SSr. Determine least squares regression line for this data.

#### Find the confidence interval for the proportion

A recent study of 75 workers found that 53 people rode the bus to work each day.  Find the 95 percent confidence interval of the proportion of all workers who rode the bus to work.

#### What is the test statistic and p-value of test

Assuming that the population standard deviations are the same, perform a two independent samples t-test on the hypotheses Null Hypothesis: μ1 = μ2, Alternative Hypothesis: μ1 ≠ μ2. What is the test statistic and p-value of this test?

#### Probability using central limit theorem

Let Y be the number of envelopes for which the machine fails to remove a check. Using the Central Limit Theorem to approximate P{Y≤10}.

#### Example on chi-square approximation

Some researchers have conjectured that stem-pitting disease in peach tree seedlings might be controlled with weed and soil treatment. An experiment was conducted to compare peach tree seedling growth with soil and weeds treated with one of two her..

#### Global test of hypothesis to find regression coefficients

Carry out the global test of hypothesis to find out whether any of the regression coefficients are not equal to 0. Use.05 level of significance.