In a randomized double-blind, placebo-controlled trial of children, an herb was tested as a treatment for...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
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 320 children treated with the herb, the mean number of days with fever was 0.92, with a standard deviation of 1,42 days. Among 385 children given a placebo, the mean number of days with fever was 0.69 with a standard deviation of 1.23 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. Identify the null and alternative hypotheses. OA H₂HP₂ My My P₂ OD 1₂:14 1₂ H₂: My P₂ The test statistic is (Round to two decimal places as needed.) 194₂:40 H₁: P OE HAPP H₂ H₂ P₂ C. H₂ HP₂ M₁: Hy #P2 OF H₂H #P₂ H₁: Pg P₂ 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 320 children treated with the herb, the mean number of days with fever was 0.92, with a standard deviation of 1,42 days. Among 385 children given a placebo, the mean number of days with fever was 0.69 with a standard deviation of 1.23 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. Identify the null and alternative hypotheses. OA H₂HP₂ My My P₂ OD 1₂:14 1₂ H₂: My P₂ The test statistic is (Round to two decimal places as needed.) 194₂:40 H₁: P OE HAPP H₂ H₂ P₂ C. H₂ HP₂ M₁: Hy #P2 OF H₂H #P₂ H₁: Pg P₂
Expert Answer:
Related Book For
Posted Date:
Students also viewed these accounting questions
-
Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Refer to the...
-
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 Many students...
-
Repeat Exercise 12 IQ and Lead by assuming that the two population standard deviations are equal, so 1 = 2 . Use the appropriate method from Part 2 of this section. Does pooling the standard...
-
Aoslia is a small country that takes the world price of corn as given. Its domestic supply and demand for corn are given by the following: a. Assume initially that Aoslia does not open to trade. What...
-
What is the present value of a stream of 5 end-of-year annual cash receipts of $500 given a discount rate of 14 percent? Use both the appropriate table in the text (Appendix C, Table 2) and the...
-
Today's knowledge workers are doing more writing on the job than ever before. Flattened management hierarchies, heightened global competition, expanded team-based management, and heavy reliance on...
-
When would a class action lawsuit be appropriate?
-
Analyzing sales price and fixed cost using the equation method Tainan Company is considering adding a new product. The cost accountant has provided the following data. The administrative vice...
-
Net public item (NNP) is the money related worth of completed labor and products created by a nation's residents, abroad and locally, in a given period. -It is what could be compared to net public...
-
Design a beam of ASTM A36 steel with allowable bending stress of 160 MPa to support the load shown in Figure P4-33. Assume a standard wide flange beam from Appendix F, or some other source can be...
-
Several years ago, Carlos formed Marzan Enterprises, a retail company. Marzan uses the accrual method of accounting. In the current year, the corporation reported the following items: Sales Cost of...
-
Consider a corporation listed on the stock exchange characterized by the following metrics: Equity Value: $150 million Volatility of Equity ( ) = 35% Debt (Principal, ) maturing in one year: $120...
-
Identify the fundamental principles and practices of project management in an organization. Describe the key elements of a project and a role of a project manager. Demonstrate the ability to create...
-
Can you elucidate the nuanced interdependencies between financial leverage, operational agility, and the propensity for organizational resurgence amidst the throes of decline within high-stakes,...
-
Assuming we make an all-cash offer, we will have to do some external financing. How should the team think about the choice of debt versus equity financing?
-
TED spread, is defined as the differential between the overnight LIBOR interest rate and the 3-months U.S. Treasury bill rate. Considering the September and October 2008 period. Discuss and explain...
-
the code is doing two things wrong - first, it is not processing upper case letters at all. Secondly, it is supposed to use key1 beginning with the first character and key2 with the second character...
-
Which of the following statements is false? a. Capital leases are not commonly reported in a Capital Projects Fund. b. A governmental entity may report a Capital Project Fund in one year but not the...
-
How do quantitative data and categorical data differ?
-
Listed below are the playing times (in seconds) of songs that were popular at the time of this writing. (The songs are by Timberlake, Furtado, Daughtry, Stefani, Fergie, Akon, Ludacris, Beyonce,...
-
If a randomly selected job applicant is given a drug test, there is a 0.038 probability that the applicant will test positive for drug use (based on data from Quest Diagnostics). a. If a job...
-
Which one of the following is an exact straight line mechanism using lower pairs? (a) Watt's mechanism (b) Grasshopper mechanism (c) Robert's mechanism (d) Peaucellier's mechanism.
-
In the epicyclic gear train shown in the Fig. \(88, T_{A}=40, T_{B}=20\). For three revolutions of the arm, the gear \(B\) will rotate through (a) 6 revolutions (b) 2.5 revolutions (c) 3 revolutions...
-
Which one of the following statements in respect of involute profiles for gear teeth is not correct? (a) Interference occurs in involute profiles (b) Involute tooth form is sensitive to change in...
Study smarter with the SolutionInn App