B. In each of the situations, answer thefollowing:a) State the Null and Alternative hypothesisin words.b) State the Null and Alternative hypothesisin symbols.c) What is the probability of committingType I Error?d) State the conclusion when Ho isrejected,e) State the conclusion when Ho is notrejected.1. A college dean claims that a bachelor'sdegree could be earned in an average offive years. Test the claim using 95%confidence level.2. An FDA officer claims that PharmaXYZ'snew caplet drug contains less than330mg of paracetamol. Test the claimusing 99% confidence level.

Introduction: Two different situations are presented here.

Answered: B. In each of the situations, answer…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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for a given level of the probability of rejecting the null hypothesis when its true, if we want to decrease the probability of not rejecting null hypothesis when it is false the sample must A) decrease B) remain the same C) increase D) increase or decrease since it has no impact on probability of not rejecting null hypothesis when it’s false
whether the residents' satisfaction with the available services depends on their gender. A random sample of A rural county hospital offers several health services. The hospital administrators conducted a poll to determine whether he or she was satisfied with the services offered by the hospital. The resulting data are shown in the 1,000 adult county residents was selected. The gender of each respondent was recorded and each was asked table below. Satisfied Not Satisfied Total Male 384 b) Find the expected counts for each cell. 80 464 a) What are the null and alternative hypotheses? c) Compute the Chi-Squared test statistic. Is there an association between gender and satisfaction with health services? Female 416 120 536 Total 800 200 1,000 d) Given that the p-value is 0.042 what is your decision in the context of the question if alpha= .05? W
Which of the following statements about Type 1 and Type 2 error is false? They are both a form of chance error. They are both represented using Greek letters. They are both a form of systematic error. Ideally you should try to keep both as low as possible in your study.
children (ages Do popular cartoon characters on food packages influence children's food choices? A study asked 40 young four to six) to taste Graham Crackers presented in a package either with or without a popular cartoon character. When asked to indicate which of the two options they would prefer to eat for a snack, 35 chose the version with a cartoon on the package. Is this evidence that young children prefer snacks packaged with popular cartoon images more than chance alone would explain? STATE: There are two questions: What proportion p of young children prefer Graham Crackers packaged with popular cartoon images? Is there evidence that p is more than 0.5 (what chance alone would predict)? PLAN: Give a 95% confidence interval, and test Ho: p = 0.5 versus Ha: p > 0.5.
A coin is tossed 4 times and gives four heads in a row. You say “I guess that the fifth toss will result into a head with a probability of 1.”
The table below shows the rank attained by male and female officers in the NYPD. Do these data indicate that gender and rank are independent? Rank Officer Detective Sergeant Lieutenant Captain Higher Ranks Male 21900 4058 3898 1333 359 218 Female 4281 806 415 89 12 10 a) Notice that this situation involves two categorical variables in which we have a table of observed values. Your calculator will give you a table of expected values when you run the test (see part (d) below). Give the name of the hypothesis test that would be appropriate for this situation. !, b) State the hypotheses in words. c) Use your calculator to perform the appropriate hypothesis test and report the test statistic, p- value, and degrees of freedom. Be sure to write out what you entered in your calculator. Use a significance level of a = 0.05.
Complete these small questions thank you :)
Three students scheduled interviews for summer employment at the Tiket.com. In each case the interview results in either an offer for a position or no offer. Experimental outcomes are defined in terms of the results of the three interviews.a. List the experimental outcomes.b. Define a random variable that represents the number of offers made. Is the random variable continuous?c. Show the value of the random variable for each of the experimental outcomes
What is the correct interpretation of the significance level a in a hypothesis test? The probability that H, is true given that Ho is NOT rejected The probability that Ho is true given that Ho is rejected The probability of NOT rejecting Ho given that H, is true The probability of rejecting Ho given that Ho is true
A new memory pill actually does not work at all. However, a researcher gives it to a sample, and by pure chance, he happens to have gotten a sample of people with above average memory. So, he wrongly concludes that it was the pill that was responsible for their good memory, and he concludes that the pill works. What has happened? The researcher has made a type II error Need more information to answer The researcher has made the correct decision The researcher has made a type I error
Discuss the implications of nonresponse error; consider this to be questionnaires that are sent to a sample and are not returned. For example say 400 people are selected for a probability sample but only 200 complete and return the survey. Also discuss ways to deal with nonresponse error and to discover whether or not it is a problem. A critical issue here is how to go about proving that the sample results that are actually obtained are representative of the population. What can be done to corroborate this?
Colder? We used the formula °F = 9>5°C + 32 to con-vert Celsius to Fahrenheit in Chapter 5. Let’s put it to use in a random variable setting.a) Suppose your town has a mean January temperature of11°C. What is the mean temperature in °F?b) Fortunately your local weatherman has recently takena statistics course and is keen to show off his newfound knowledge. He reports that January has a standard de-viation of 6°C. What is the standard deviation in °F?

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