1 answer

As the population ages, there is increasing concern about accident-related injuries to the elderly. An article...

Question:

As the population ages, there is increasing concern about accident-related injuries to the elderly. An article reported on an

As the population ages, there is increasing concern about accident-related injuries to the elderly. An article reported on an experiment in which the maximum lean anglethe farthest a subject is able to lean and still recover in one step-was determined for both a sample of younger females (21-29 years) and a sample of older females (67-81 years). The following observations are consistent with summary data given in the article: YF: 28, 36, 31, 27, 28, 32, 31, 36, 32, 26 OF: 17, 15, 23, 13, 12 Does the data suggest that true average maximum lean angle for older females (OF) is more than 10 degrees smaller than it is for younger females (YF)? State and test the relevant hypotheses at significance level 0.10. (Use ul for younger females and up for older females.) O Ho: Mi - M2 = 0 Ha: Uli - U2 > 0 O Ho: U1 - 42 = 0 Ha: Mi - U2 < 0 Ho: U1 - U2 = 10 Ha: Mi - M2 > 10 O Ho: 41 - 42 = 10 Ha: M1 - M2 < 10 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) t = P-value =

Answers

YF OF
30.70 16.00 mean
3.50 4.36 std. dev.
10 5 n

Test Statistic :-
t = (X̅1 - X̅2) / SP √ ( ( 1 / n1) + (1 / n2))
S_{p} = ( \sqrt{( n1 - 1 )S_{1}^{2} + (n2 - 1 )S_{2}^{2} ) / ( n1 + n2 - 2 )}

Sp = 3.784

t = 2.27

P value = P ( t > 2.27 ) = 0.021


.

Similar Solved Questions

1 answer
According to the Centers for Disease Control and Prevention (2017), approximately 100,000 Americans have sickle cell...
According to the Centers for Disease Control and Prevention (2017), approximately 100,000 Americans have sickle cell disease. Red blood cells that contain sickle hemoglobin are inflexible. This results in the cells adhering to blood vessel walls which slows or stops blood flow. This diminished or ab...
1 answer
Homéwork: Chapter 11 Homework Save Score: 0 of 6 pts I2 of 17(9complete) ▼ MN Score:...
Homéwork: Chapter 11 Homework Save Score: 0 of 6 pts I2 of 17(9complete) ▼ MN Score: 16.57%, 9.44 of 57 pts Question Help * e toys were shown to each baby in a 11.2.5 In an experiment, 16 babies were asked to watch a dlimber attempt to ascend a hill n two occasions, the baby witnesses t...
1 answer
A proton moves at 5.10 x 10^5 m/s in the horizontal direction. It enters a uniform...
A proton moves at 5.10 x 10^5 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.10 x10^3 N/C. Ignore any gravitational effects. (a) Find the time interval required for the proton to travel 4.70 cm horizontally. (b) Find its vertical displacement durin...
1 answer
Your firm is contemplating the purchase of a new $425,000 computer-based order entry system. The system...
Your firm is contemplating the purchase of a new $425,000 computer-based order entry system. The system will be depreciated straight-line to zero over its 5-year life. It will be worth $48,000 at the end of that time. You will save $149,000 before taxes per year in order processing costs, and you wi...
1 answer
! Required information (The following information applies to the questions displayed below.) 3 Home Furnishings reports...
! Required information (The following information applies to the questions displayed below.) 3 Home Furnishings reports inventory using the lower of cost and net realizable value (NRV). Below is information related to its year-end inventory. Inventory Furniture Electronics Quantity 250 55 Unit Cost ...
1 answer
A).For the following MIPS assembly code to be executed using the pipelined datapath, identify all of...
a).For the following MIPS assembly code to be executed using the pipelined datapath, identify all of the data dependencies (which register in which instruction needs the result register value from which another instruction?) and enumerate them (give them numbers as 1,2, ...). b).Which dependencies a...
1 answer
Help please Which of the following enzymes is responsible for destroying excess norepinephrine within the adrenergic...
help please Which of the following enzymes is responsible for destroying excess norepinephrine within the adrenergic nerve endings? Multiple Choice 0 Monoamine oxidase Glucosidase Cytochrome c oxidase Phenylalanine hydroxylase...
1 answer
Which of the following groups of terms describes the essential characteristics of managerial accounting? a. Internally...
Which of the following groups of terms describes the essential characteristics of managerial accounting? a. Internally focused, oriented towards the future, and functioning without mandatory rules O b. Externally focused, historically based, and following externally imposed rules O c. Externally foc...
1 answer
A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term governmen...
A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a sure rate of 3.0%. The probability distributions of the risky funds are:    ...
1 answer
Note: Respond To All Questions That Are Highlighted From Part A To B(Use 3 graphs for...
Note: Respond To All Questions That Are Highlighted From Part A To B(Use 3 graphs for part B) A. Was your hypothesis correct or not (our hypothesis: The average size of the L. gigantea limpets has changed because humans are impacting their survival of the larger L. gigantea through crushing them...
1 answer
1 Let X1,..., Xn be iid with PDF x/e f(x;0) ',X>0 o (a) Find the method...
1 Let X1,..., Xn be iid with PDF x/e f(x;0) ',X>0 o (a) Find the method of moments estimator of e. (b) Find the maximum likelihood estimator of O (c) Is the maximum likelihood estimator of efficient?...
1 answer
Just looking for answer to d. does adding students effect both curves? or just demand curve?...
just looking for answer to d. does adding students effect both curves? or just demand curve? Unit 2 Steview Problems + -31738298cmid=24097628page-1 Suppose that the price of basketbalikat at your college is determined by market forces. Currently, the demand and supply schedules are as below: Price Q...
1 answer
-What is the difference between social authority and cultural authority? Please give one example of each to support your...
-What is the difference between social authority and cultural authority? Please give one example of each to support your response. -Finding ways to address malnutrition is an example of applied medical anthropology. True False -Which best describes the future of medical anthropology as predicted by ...
1 answer
An experiment has a single factor with six groups and five values in each group. In...
An experiment has a single factor with six groups and five values in each group. In determining the among-group variation, there are 5 degrees of freedom. In determining the within-group variation, there are 24 degrees of freedom. In determining the total variation, there are 29 degrees of freedom. ...
1 answer
Find the probability of at least 6 girls in 9 births. Assume that male and female...
Find the probability of at least 6 girls in 9 births. Assume that male and female births are equally likely and that the births are independent events....
1 answer
A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on...
A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction: AgCI(s) teAg(s) + CI (aq) The two cell compartments have [CI] = 0.0 150 mol L-i and [Cl]-2.55 mol Li, respectively. 1. Which electrode is the cathode of the cell? 2. What ...
1 answer
Multiply. Write the result in the form a +bi. Chapter 18.8 [Ex 6] RESPOND TO EACH...
Multiply. Write the result in the form a +bi. Chapter 18.8 [Ex 6] RESPOND TO EACH OF THE FOLLOWING STATEMENTS BE SURE TO LABEL THE RESPONSES WITH THE APPROPRIATE LETTER A) Using FOIL what is F B) Using FOIL what is o C) Using FOIL what is D) Using FOIL what is L E) State the product 6-3, 4-V-5...
1 answer
Please show all steps! A heat-transfer experiment in CBE 154 investigates conductive heat transport within a...
please show all steps! A heat-transfer experiment in CBE 154 investigates conductive heat transport within a solid and convective heat transport at a solid gas interface. In this homework problem, you are to write the differential equations describing the experimental setup (but not solve them). The...
1 answer
NSG 6002 Health Police and Health Promotion: Provide Instructor with the Topic of Health Promotion Paper...
NSG 6002 Health Police and Health Promotion: Provide Instructor with the Topic of Health Promotion Paper for Approval...