User Account

All Pages

Identify the null hypothesis and alternative hypothesis

Assignment Help Basic Statistics
Reference no: EM131167981

In a pulse rate research, a simple random sample of 81 men results in a mean of 75 beats per minute, and a standard deviation of 12 beats per minute. Based on the sample results, the researcher concludes that the pulse rates of men have a standard deviation greater than 10 beats per minutes. Use a 0.05 significance level to test the researcher's claim.

  1. Identify the null hypothesis and alternative hypothesis.
  2. Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.
  3. Determine the P-value for this test. Show all work; writing the correct P-value, without supporting work, will receive no credit.
  4. Is there sufficient evidence to support the researcher's claim? Explain.

Reference no: EM131167981

Questions Cloud

Randomly selected test scores : If a random sample of 64 test scores is selected, what is the standard deviation of the sample mean? What is the probability that 64 randomly selected test scores will have a mean test score that is between 475 and 525?
How many parity bits are necessary : How many parity bits are necessary? Assuming we are using the Hamming algorithm presented in this chapter to design our error-correcting code, find the code word to represent the 10-bit information word: 1001100110.
Effectiveness of garlic for lowering cholesterol : In a study designed to test the effectiveness of garlic for lowering cholesterol, 49 adults were treated with garlic tablets. Cholesterol levels were measured before and after the treatment.
Number of cucumbers that mimi harvests : 1. Rabbits like to eat the cucumbers in Mimi's garden. There are 10 cucumbers in her garden which will be ready to harvest in about 10 days. Based on her experience, the probability of a cucumber being eaten by the rabbits before harvest is 0.30.
Identify the null hypothesis and alternative hypothesis : Identify the null hypothesis and alternative hypothesis. Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.
How your architecture approaches the concepts : Pick an architecture. Do research to find out how your architecture approaches the concepts introduced in this chapter. For example, what representation does it use for negative values?
Problem regarding the sample independent : The final grades for the 5 students from teaching method 2 are 98, 93, 70, 68, 62. Two sample independent t test at alpha of .05 assuming equal variances.
How many groups were compared : How many groups were compared? What was the sample size? What was alpha? What was the critical value?
Generate random data that have a given relationship : generate random data that have a given relationship and then use regression on the generated data to see if the estimated regression is basically the same as that used to generate the data in the first place.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Level of confidence and sample size

When the level of confidence and sample size remain the same, a confidence interval for a population proportion π will be __________ when p(1-p) is larger than when p(1-p)   is smaller.

  Computing z test for population mean

Xerox Claims their copier is the same speed as Cannon's copier. The average speed of cannon's copier is 27 copies per minute. A test of 49 runs is done on the Xerox copier giving a sample mean X = 26 and a sample standard deviation s = 2.65.

  What are single and double blinding

Clinical trials play a vital role in testing and development of new drugs and medical devices. What are clinical trials?  Explain the difference between controlled and uncontrolled trials.

  Developing a multinational sporting goods corporation

In every chapter of this text, some of the key concepts are illustrated with an application to a small sporting goods firm that conducts international business. These "Small Business Dilemma" features allow students to recognize the dilemmas and p..

  Probability of a rating credit card

A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 175 and a standard deviation of 15. If an applicant is randomly selected, find the probability of a rating that is between 150 and 200.

  Suppose we draw two tickets from a hat that contains

suppose we draw two tickets from a hat that contains tickets numbered 1234. let x be the 1st number drawn and y be the

  Make a list of three cars that you would consider purchasing

Make a list of at least three cars that you would consider purchasing. To be fair, the cars should be in the same class (compact, midsize, etc). they should also be of the same age.

  Steady-state temperatures of two radiation shields

Determine the steady-state temperatures of two radiation shields placed in the evacuated space between two infinite planes at temperatures of 600 and 325 K. All the surfaces are diffuse and gray with emissivities of 0.7.

  Estimation of mean for elephants

In a study of elephants a researcher wishes to determine the average weight of a certain subspecies of elephants. From previous studies, the standard deviation of the weights of elephants in this subspecies is known to be 1500 pounds.

  State the appropriate null and alternative hypothesis

State the appropriate null and alternative hypothesis for the following case: The examinations in a large freshmen chemistry class are scaled after grading.

  Mean annual precipitation

What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less than 90.8 inches?

  Determining quantitative analysis for management

Jim Sellers is thinking about producing a new type of electric razor for men. If the market were favorable, he would get a return of $100,000, but if the market for this new type of razor were unfavorable

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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