Please help me find the Test Statistic rounded to 2 decimalsand the P-Value rounded to 3 decimals. In a randomized double-blind, placebo-controlled trial of children, an herb was tested as a treatment for upperrespiratory infections in children. "Days of fever" was one criterion used to measure effects. Among 334 children treatedwith the herb, the mean number of days with fever was 0.87, with a standard deviation of 1.52 days. Among 370 childrengiven a placebo, the mean number of days with fever was 0.66 with a standard deviation of 1.23 days. Use a 0.05significance level to test the claim that the herb affects the number of days with fever. Based on these results, does theherb appear to be effective? Assume that the two samples are independent simple random samples selected fromnormally distributed populations, and do not assume that the population standard deviations are equal. Let population 1be children treated with the herb.

We know that:For children treated with the herb:Sample mean number of days with fever (x̄1):…

Answered: In a randomized double-blind,…

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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In a randomized double-blind, placebo-controlled trial of children, an herb was tested as a treatment for upper respiratory infections in children. "Days of fever" was one criterion used to measure effects. Among 333 children treated with the herb, the mean number of days with fever was 0.89, with a standard deviation of 1.51 days. Among 379 children given a placebo, the mean number of days with fever was 0.68 with a standard deviation of 1.06 days. Use a 0.01 significance level to test the claim that the herb affects the number of days with fever. Based on these results, does the herb appear to be effective? Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Let population 1 be children treated with the herb.
In a study of 120 post-menopausal women on hormone replacement therapy (HRT), there was a mean systolic blood pressure of 131 mmHg, with a standard deviation of 16.5. Calculate a 95% confidence interval for the true mean SBP.
In a randomized double-blind, placebo-controlled trial of children, an herb was tested as a treatment for upper respiratory infections in children. "Days of fever" was one criterion used to measure effects. Among 303 children treated with the herb, the mean number of days with fever was 0.82, with a standard deviation of 1.59 days. Among 363 children given a placebo, the mean number of days with fever was 0.62 with a standard deviation of 1.16 days. Use a 0.05 significance level to test the claim that the herb affects the number of days with fever. Based on these results, does the herb appear to be effective? Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Let population 1 be children treated with the herb. The test statistic is The P-value is
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Volunteers who had developed a cold within the previous 24 hours were randomized to take either zinc or placebo lozenges every 2 to 3 hours until their cold symptoms were gone. Twenty-five participants took zinc lozenges, and 23 participants took placebo lozenges. The mean overall duration of symptoms for the zinc lozenge group was 5 days, and the standard deviation of overall duration of symptoms was 1.3 days. For the placebo group, the mean overall duration of symptoms was 7.3 days, and the standard deviation was 2 days. (a) Calculate a 95% confidence interval for the mean overall duration of symptoms in a population of individuals like those who used the zinc lozenges. (Round your answers to two decimal places.)to days(b) Calculate a 95% confidence interval for the mean overall duration of symptoms in a population of individuals like those who used the placebo lozenges. (Round your answers to two decimal places.)to days(c) On the basis of the intervals computed in parts (a) and (b),…
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