16 A researcher wishes to try threedifferent techniques to lower theblood pressure of individualsdiagnosedwithhighbloodpressure.Thesubjectsarerandomlyassignedtothreegroups; the first group takesmedication, the second groupexercises, and thefollows a special diet. After fourweeks, the reduction in eachthird groupperson'sbloodispressurelevel0.05recorded.Atofsignificance, test the claim thatthere is no difference among themeans.Hint: Tabulated value = 3.89The data are shown:exercisedietmedication10121215134Then:The decision is toaccept the nullhypothesis.The decision is toincrease sample size.The decision is todecrease sample size.The decision is toreject the nullhypothesis.

Name: 16 A researcher wishes to try threedifferent techniques to lower thebl
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: 16 A researcher wishes to try threedifferent techniques to lower theblood pressure of individualsdiagnosedwithhighbloodpressure.Thesubjectsarerandomlyassignedtothreegroups; the first group takesmedication, the second groupexercises, and thefollows a

Given: medication exercise diet 10 6 5 12 8 9 9 3 12 15 0 8 13 2 4

Math

Statistics

A researcher wishes to try three different techniques to lower the pressure of individuals high blood diagnosed with blood pressure. The subjects are randomly assigned to three groups; the first group takes medication, the second group exercises,and the third group follows a special diet. After four weeks, the reduction in each person's blood pressure is recorded. At 0.05 level of significance, test the claim that there is no difference among the means. Hint: Tabulated value = 3.89 The data are shown: exercise diet medication 10 6 12 12 15 13 4 Then: The decision is to accept the null hypothesis. OThe decision is to increase sample size. OThe decision is to decrease sample size. O The decision is to reject the null hypothesis.

A researcher wishes to try three different techniques to lower the pressure of individuals high blood diagnosed with blood pressure. The subjects are randomly assigned to three groups; the first group takes medication, the second group exercises,and the third group follows a special diet. After four weeks, the reduction in each person's blood pressure is recorded. At 0.05 level of significance, test the claim that there is no difference among the means. Hint: Tabulated value = 3.89 The data are shown: exercise diet medication 10 6 12 12 15 13 4 Then: The decision is to accept the null hypothesis. OThe decision is to increase sample size. OThe decision is to decrease sample size. O The decision is to reject the null hypothesis.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

suppose that from a sample of 200,000 new york workers, 32,400 reported traveling more than an hour an day. From this information, statisticians determined that about 16.2% of the workers in the state traveled more than an hou to work every day in 2011. If there were 8,437,512 workers in the entire population, about how many traveled more than an hour to work each day?
According to the Pew Research Center,on the propotion of the American population who use only a cellular telephone (landline) is 0.37. Jason conducts a survey of one hundred fifty 20 to 24 year olds who live on their own and finds that 73 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20 to 24 year olds who live on their own and don't have a landline is greater than 0.37? Use a=0.10 level of significance. A) Verify that nP0(1-P0)>10 and n< 0.05N (Assume the population sizes is N=40 million) B) State the appropiate null and alternative hypotheses. C) Indicate whether the hypothesis is left, right, or two- tailed.
According to the Pew Research Center,on the propotion of the American population who use only a cellular telephone (landline) is 0.37. Jason conducts a survey of one hundred fifty 20 to 24 year olds who live on their own and finds that 73 do not have a landline to their home. Does this provide sufficient evidence to conclude that the proportion of 20 to 24 year olds who live on their own and don't have a landline is greater than 0.37? Use a=0.10 level of significance. D) Compute the test statistic z0. Round to the nearest hundredth. E) Draw a normal model with the area that represents the P-value shaded. F) Determine and interpret the P-value. What is the conclusion of the hypothesis test?
The manager of a theater that is open to residents of two towns, A and B, wants to know if the proportion of households from A that use the library is smaller than the proportion of households from B. In order to test this, the manager asks 45 households in A and 49 households in B whether anyone in their household had used the theater last summer. 23 of the households surveyed in A responded "yes", and 35 of the households in B responded "yes". Find the p-value that would be used to make a conclusion for this hypothesis test.
Back to school, again Based on the 74% national reten-tion rate described in Exercise 23, does a college where 522 of the 603 freshman returned the next year as sopho-mores have a right to brag that it has an unusually high retention rate? Explain.
The quality department at an electronics company has noted that, historically, 91% of the units of a specific product pass a test operation, 6% fail the test but are able to be repaired, and 3% fail the test and need to be scrapped. Due to recent process improvements, the quality department would like to test if the rates have changed. A recent sample of 500 parts revealed that 473 parts passed the test, 20 parts failed the test but were repairable, and 7 parts failed the test and were scrapped. (You may find it useful to reference the appropriate table: chi-square table or table)a. Choose the appropriate alternative hypothesis for the test.
in a certain city, 60% of the heads of household own the house in which they reside, and 80% of the heads of the household have full-time employment when considering what percentage of heads of household both own their home and have a full-time job, a student estimates that 48% of heads of household fit both requirements, stating that (0.60) (0.80)=0.48. is this student correct in his approach?
A study was conducted to compare the costs of supporting a family of four Canadians for a year in different foreign cities. The lifestyle of living in Canada on an annual income of 75,000 $ was the standard against which living in foreign cities was compared. A comparable living standard in Perth Australia and Mexico City was attained for 64,000$. Suppose an executive wants to determine whether there is any difference in the average annual cost of supporting her family of four in the manner to which they are acccustomed in Perth, Mexico City. She uses the data randomly gathered from 11 random families in each city. She found that the sample mean and standard deviation for Perth Australia was 67,381.82 and 2,296.44 respectively. The mean and standard deviation for the sample of Mexico City was 63,436.36$ and 1,568.61 respectively. She used an alpha of 0.01 to test this difference. She assumes the annual cost is normally distributed and the population variances are equal. What does the…
The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a DVD player made by the company over the past 12 months are satisfied with their products.
A poll in June 2020 found that 81% of American parents believe that virtual learning instead of in-person learning widens the equity gap for students. A later poll in October 2020 asked 1081 American parents if they believe virtual learning instead of in-person learning widens the equity gap for students, and found that 822 believe that yes, virtual learning instead of in-person learning widens the equity gap for students. Does this mean that the proportion of American parents, who believe that virtual learning instead of in-person learning widens the equity gap for students, has decreased? Test at the 1% significance level. hypotheses:H0: p ≥ 0.81 HA: p < 0.81Calculate the sample proportion. Round to four decimal places.p̂ = ____Calculate the test statistic. Round to two decimal places.z = ____Find the p-value. Give to four decimal places.p-value = _____
At any age, about 20% of American adults participate in physical conditioning activities at least twice a week. However, these activities change as people get older, and occasionally participants cease to be older as they age. In a local survey of n = 100 adults over 40 years of age, a total of 15 people indicated that they participated in these activities at least twice a week. Does this data indicate that the percentage of participation for adults over 40 years of age is considerably less than the 20% figure? Find the p-value and use it to draw the appropriate conclusions.
A iPhone store starts by selling 100 iPhone pre-ordered in week zero and expects to sell an average of 15%more each week after that. How many iPhone is the store expected to sell in week 4?