Hypotheses and using z-table

Assignment Help Basic Statistics
Reference no: EM13108699

In the case of Castenedav. Partida, it was found that during a period of 11 years in Hilda County, Texas, 870 people were selected for grand jury duty, and 39% of them were Americans of Mexican ancestry. Among the people eligible for grand jury duty, 79.1% were Americans of Mexican ancestry. We shall use a 0.01 significance level to test the claim that the selection process is biased against Americans of Mexican ancestry.

a) Set up the null and alternative hypotheses, and perform the hypothesis test.

b) Does the jury selection system appear to be fair?

Reference no: EM13108699

Questions Cloud

Average number and p-value questions : The club professional at a difficult public course boasts that his course is so tough that the average golfer loses a dozen or more golf balls during a round of golf.
Statistics problem-mean wait time : A bank manager has developed a new system to reduce the time customers spend waiting for teller service during peak hours. The manager hopes that the new system will reduce waiting times from the current 9 to 10 minutes to less than 6 minutes.
Describe the path of energy conversions : describe the path of energy conversions, beginning with light energy from the sun and ending with the energy in your musceles.
What measures would be necessary to put into place : Culture failures can occur due to many technical errors within the culture room in a cytogenetics laboratory. The following is a cause of culture failure. What could cause the following and what measures would be necessary to put into place to av..
Hypotheses and using z-table : In the case of Castenedav. Partida, it was found that during a period of 11 years in Hilda County, Texas, 870 people were selected for grand jury duty, and 39% of them were Americans of Mexican ancestry.
How is accuracy different from precision : One blood glucose meter always reads 10 too high. Another meter reads anywhere from 5 to 9 too high. Which one is the more precise? which one is the more accurate? How is accuracy different from precision?
Interpreting the p-value : In 280 trials with a professional touch therapist, correct responses to a question were obtained 1223 times. The P-value of 0.979 is obtained when testing the claim that p > 0.5 (the proportion of correct responses is greater than the proportion o..
Illustrate what non regulatory pressures are most likely : Examine the merits of the various recommendations for solutions to the problem of extremely high CEO compensation. Illustrate what non regulatory pressures are most likely to bring excessively high CEO salaries more in line with realistic levels?
Calculate the appropriate loan table : You just took a $20,000, eight-year loan. Payments at the end of each year are flat (equal in every year) at an interest rate of 8 percent.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Computing five key percentiles for data

Compute mean, standard deviation, coefficient of variation and 5 key percentiles for these data.

  Determine probable to result in rejecting null hypothesis

If researcher obtains sample mean of M = 88, which combination of factors is most likely to result in rejecting null hypothesis?

  Indicating dependent and independent variable

Indicate which would be the independent variable and which would be the dependent variable in each of the following:

  Testing of regression coefficient

Is there evidence that teams with higher total payrolls tend to be more successful? Justify your answer.

  Determining a linear-power and exponential model

Now make a scatter plot of data from 1982 to 1998 (again, use years since 1800). Determine a linear, power, or exponential model that explains the crude oil production during this time period.

  What is the value of the population mean

What is the value of the population mean? What is the best estimate of the value?

  News mainly from newspapers

Given that a respondent is over age 50, what is the probability that he or she gets news primarily from newspapers?

  Mean-variance-confidence interval

Compute the mean and variance of the following discrete probability distribution. A cola-dispensing machine is set to dispense on average 7.00 ounces of cola per cup. The standard deviation is 0.10 ounces. The distribution of amounts dispensed foll..

  Kind of information may indicate and mean

They found that those with higher levels of cigarette use had lower GPAs, and vice versa. What can you rightfully conclude from this? Why? Be specific about what this kind of information may indicate and mean.

  Observed and expected number of events

Suppose we want to compare the observed and expected number of events among the group 250 treatments.

  Understanding of sampling distribution

In the following questions, you should demonstrate your understanding of sampling distribution:

  Describe the term interaction with example

What is an interaction? Describe an example and identify the variables within your population (work, social, academic, etc.) for which you might expect interactions?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd