Solve all please A random selection of volunteers at a research institute have been exposed to a typical cold virus. After they started to have cold symptoms, 10 of them weregiven multivitamin tablets daily which contain 1 gram of vitamin C and various other vitamins and minerals. The remaining 10 volunteers were given tabletsonly containing 4 grams of vitamin C. For each individual, the length of time taken to recover from cold is recorded. At the end of the experiment the followingdata are obtained:Days to recover from coldTreated with multivitamin 4.5, 5.9, 8.0, 9.1, 4.5, 2.1, 6.1, 6.6, 4.3, 2.2Treated with Vitamin C 4.3, 7.2, 6.7, 5.8, 5.9, 4.0, 3.9, 4.7, 3.1, 6.1Send data to calculator vIt is known that the population standard deviation of recovery time from cold is 1.8 days when treated with multivitamin, and the population standard deviationof recovery time from cold is 1.5 days when treated with vitamin C tablets. It is also known that both populations are approximately normally distributed. Theresearchers claim that the mean recovery time, H, of the patients treated with multivitamin is less than or equal to the mean recovery time l.of the patientswho are treated with vitamin C tablets. At the 0.05 level of significance, is there enough evidence to reject this claim? Perform a one-tailed test. Then fill in thetable below.Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)The null hypothesis:H :0CheckSave For LaterSubmit Assignment2021 McGraw-Hill Education. All Rights Reserved. Terms of UsePrivacy Accessibility Suon Attempt. 1or oniimitedor recovery time rrom cola is 1.5 days wnen treated with vitamin C tablets. It is also Known that Dotn populations are approximately normally distributea. Theresearchers claim that the mean recovery time, u,, of the patients treated with multivitamin is less than or equal to the mean recovery time u, of the patientswho are treated with vitamin C tablets. At the 0.05 level of significance, is there enough evidence to reject this claim? Perform a one-tailed test. Then fill in thetable below.Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)The null hypothesis:H :0The alternative hypothesis:H :0OSOThe type of test statistic:(Choose one)ロォロO0The value of the test statistic:(Round to at least threedecimal places.)The p-vue:(Round to at least threedecimal places.)Can we reject the researchers' claim that the meanrecovery time when treated with multivitamin isless than or equal to the mean recovery time whentreated with vitamin C only?O YesO NoSave For LaterSubmit AssignmeCheck© 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy Accessola

Name: Solve all please A random selection of volunteers at a research instit
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Description: Solve all please A random selection of volunteers at a research institute have been exposed to a typical cold virus. After they started to have cold symptoms, 10 of them weregiven multivitamin tablets daily which contain 1 gram of vitamin C and vario

Question

Solve all please A random selection of volunteers at a research institute have been exposed to a typical cold virus. After they started to have cold symptoms, 10 of them weregiven multivitamin tablets daily which contain 1 gram of vitamin C and various other vitamins and minerals. The remaining 10 volunteers were given tabletsonly containing 4 grams of vitamin C. For each individual, the length of time taken to recover from cold is recorded. At the end of the experiment the followingdata are obtained:Days to recover from coldTreated with multivitamin 4.5, 5.9, 8.0, 9.1, 4.5, 2.1, 6.1, 6.6, 4.3, 2.2Treated with Vitamin C 4.3, 7.2, 6.7, 5.8, 5.9, 4.0, 3.9, 4.7, 3.1, 6.1Send data to calculator vIt is known that the population standard deviation of recovery time from cold is 1.8 days when treated with multivitamin, and the population standard deviationof recovery time from cold is 1.5 days when treated with vitamin C tablets. It is also known that both populations are approximately normally distributed. Theresearchers claim that the mean recovery time, H, of the patients treated with multivitamin is less than or equal to the mean recovery time l.of the patientswho are treated with vitamin C tablets. At the 0.05 level of significance, is there enough evidence to reject this claim? Perform a one-tailed test. Then fill in thetable below.Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)The null hypothesis:H :0CheckSave For LaterSubmit Assignment2021 McGraw-Hill Education. All Rights Reserved. Terms of UsePrivacy Accessibility Suon Attempt. 1or oniimitedor recovery time rrom cola is 1.5 days wnen treated with vitamin C tablets. It is also Known that Dotn populations are approximately normally distributea. Theresearchers claim that the mean recovery time, u,, of the patients treated with multivitamin is less than or equal to the mean recovery time u, of the patientswho are treated with vitamin C tablets. At the 0.05 level of significance, is there enough evidence to reject this claim? Perform a one-tailed test. Then fill in thetable below.Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)The null hypothesis:H :0The alternative hypothesis:H :0OSOThe type of test statistic:(Choose one)ロォロO>0The value of the test statistic:(Round to at least threedecimal places.)The p-vue:(Round to at least threedecimal places.)Can we reject the researchers' claim that the meanrecovery time when treated with multivitamin isless than or equal to the mean recovery time whentreated with vitamin C only?O YesO NoSave For LaterSubmit AssignmeCheck© 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy Accessola

Accepted Answer

We conduct Z test for two means.