1 answer

Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...

Question:

Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of three of the treatments (car types). Test whether the mean pressure applied to the driver’s head during a crash test is equal for each type of car.

To answer the question, we can set it up as a hypothesis testing problem and use the data collected to answer it. Complete the following to show how this would be done. (1 point each)

  1. What statistical test would be appropriate in this case? Explain the rationale for your answer.
  2. State the null and alternative hypotheses in words.
  3. State the null and alternative hypotheses in statistical symbols
  4. Would the test be right-tailed, left-tailed or two-tailed? Explain the rationale for your answer.
  5. Describe a potentially confounding variable and explain how that might affect the conclusions from the study.

Answers

(a)

statistical test that would be appropriate in this case : One way ANOVA

Explanation: One way ANOVA is used for determining whether there are any statistically significant difference between values of mean pressure applied to the driver’s head during a crash test in three of the treatments (car types).

(b)

H0: Null Hypothesis: There are no statistically significant difference between values of mean pressure applied to the driver’s head during a crash test in three of the treatments (car types)

HA: Alternative Hypothesis:   There are statistically significant difference between values of mean pressure applied to the driver’s head during a crash test in three of the treatments (car types)

(c)

H0: Null Hypothesis: μι = μ2 = μ3

HA: Alternative Hypothesis: Er 771 7 IN (At least one mean is different from other 2 means)

(d)

Two tailed because the testing is whether means are equal or not.

(e)

The potentially confounding variable is the speed of the car at the time of cars at the time of crash. If the difference in car types are more, the conclusions from the study might affect more.

.

Similar Solved Questions

5 answers
Find each of the following for ((x) = 6x+5, (a) (x +h) (6) {x + h) = f(x) fx #h) - f(x)Ixth)-0 (D) f(x + h) = "x)-D Ith-I-0]
Find each of the following for ((x) = 6x+5, (a) (x +h) (6) {x + h) = f(x) fx #h) - f(x) Ixth)-0 (D) f(x + h) = "x)-D Ith-I-0]...
5 answers
Radio tower located 375 feet from building; From window in tre bullding person determincs that tne angle of elevation to the tOp of the tower ard that the agle of depression to the bottom of the tower I5 25 How tall the tower?leet
radio tower located 375 feet from building; From window in tre bullding person determincs that tne angle of elevation to the tOp of the tower ard that the agle of depression to the bottom of the tower I5 25 How tall the tower? leet...
1 answer
How do you differentiate #(15X^3 + 10X) / sqrt(X^2 + 1)#?
How do you differentiate #(15X^3 + 10X) / sqrt(X^2 + 1)#?...
5 answers
INEAMy CoursesThis CourseEnglish (en)Wm Vx+2 Vum (*+2) Ilm (2x-10) Ilm(2+-10)Choose_4m(*+2) Hm(*+2) Hm(2x)- Hm 10 ZWm(x) - Hm 10ChooseVHim (*+2) [lm (x+2) Ju(2x-10) Hm(2x)- Hm 10Hm (x+2) V4m(*+2) Hm() - 4m 10 2lm(x)-10ChooseV7+2 2(7)-10Choose;Hm (x+2) V7tz 2uim()-10 2(7)-10Choose;4+Z Him L=10Mm Vx+2 Ilm (2+-10)MacBook ProChoose.
INEA My Courses This Course English (en) Wm Vx+2 Vum (*+2) Ilm (2x-10) Ilm(2+-10) Choose_ 4m(*+2) Hm(*+2) Hm(2x)- Hm 10 ZWm(x) - Hm 10 Choose VHim (*+2) [lm (x+2) Ju(2x-10) Hm(2x)- Hm 10 Hm (x+2) V4m(*+2) Hm() - 4m 10 2lm(x)-10 Choose V7+2 2(7)-10 Choose; Hm (x+2) V7tz 2uim()-10 2(7)-10 Choose; 4+Z ...
5 answers
(9 pts ) Find the interval of convergence of the series (You will not need to check endpoints. 21.5.9-(4n-3) (Bx-2)"
(9 pts ) Find the interval of convergence of the series (You will not need to check endpoints. 21.5.9-(4n-3) (Bx-2)"...
1 answer
1. In Actor-Network Theory, briefly define the terms “actors”, “translation”, “delegation”, and “prescription”.2. What is anthropomorphism?
1. In Actor-Network Theory, briefly define the terms “actors”, “translation”, “delegation”, and “prescription”.2. What is anthropomorphism?...
5 answers
An urn contains five red balls, six green balls, and four white balls. If a single ball is drawn, find the probability and the odds that the ball is as specified.6 (a) white(b) green or white(c) not green
An urn contains five red balls, six green balls, and four white balls. If a single ball is drawn, find the probability and the odds that the ball is as specified. 6 (a) white (b) green or white (c) not green...
5 answers
For X = the rutnber of major defects on Funidotls (Total 16 point %; points each) The pmf t lected #ppliauce of cottut tyne I5 3 3 P(s)Corpute tke following:E(X )Vat( X)E(2
for X = the rutnber of major defects on Funidotls (Total 16 point %; points each) The pmf t lected #ppliauce of cottut tyne I5 3 3 P(s) Corpute tke following: E(X ) Vat( X) E(2...
5 answers
AcrlGiven the following illustration of one-link arm; please answer the following questions Can we reach to any (X, Y) or does it lie on some curve? Please provide your explanation.b. Consider /-link arm aS discussed above. Find (x, for 450 when =1 mc. Consider =I; can we reach at (0, 1) (Yes or No)? Find the solution for 0.
Acrl Given the following illustration of one-link arm; please answer the following questions Can we reach to any (X, Y) or does it lie on some curve? Please provide your explanation. b. Consider /-link arm aS discussed above. Find (x, for 450 when =1 m c. Consider =I; can we reach at (0, 1) (Yes or ...
4 answers
Calculate thE Loriceniralion of I03 in a 4.98 mM Ph(NOz)z sulutiun saturalexl with Pb(IO;)1 The Kap Of Pb(IO; - " 25x10 AssuIc (hal_ Pb(IOz)z is negligible source f Pb" compared (o Pb(NO,)hlosBdifferent solution contains dissolved NalO, - What is the concentration of NalO , if adding excess Ph(IO,) (s) produces Pb? cuncentulnn Ul 8.60 x 10-5concenlraliun
Calculate thE Loriceniralion of I03 in a 4.98 mM Ph(NOz)z sulutiun saturalexl with Pb(IO;)1 The Kap Of Pb(IO; - " 25x10 AssuIc (hal_ Pb(IOz)z is negligible source f Pb" compared (o Pb(NO,) hlosB different solution contains dissolved NalO, - What is the concentration of NalO , if adding exc...
5 answers
Let T : R2 _ + R2 denote function which satisfiesI[-J- [8]; "[?h-[:] "d[%h-[2] Explain why T can not be linear transformation.
Let T : R2 _ + R2 denote function which satisfies I[-J- [8]; "[?h-[:] "d[%h-[2] Explain why T can not be linear transformation....
1 answer
Consider joint probability distribution given below y fxy (x, у) х 1.0 1 11/32 1/32 1.5...
Consider joint probability distribution given below y fxy (x, у) х 1.0 1 11/32 1/32 1.5 2 1.5 1/4 2.5 4 1/4 3.0 1/8 Determine the following: In your intermediate calculations, round all fractions to three decimal places. Round your answers to three decimal places (e.g 98.765) (a) Conditi...
5 answers
4 ( The marginal profit (in dollars) on the sale of widgets is given by P' (x) = x(SOx2 + 30x), where x is measured in hundreds of widgets Ifno widgets are sold,you will lose S40. Find the profit function for the sale of widgets. What is your profit on the sale of 500 widgets? U= 50x T -
4 ( The marginal profit (in dollars) on the sale of widgets is given by P' (x) = x(SOx2 + 30x), where x is measured in hundreds of widgets Ifno widgets are sold,you will lose S40. Find the profit function for the sale of widgets. What is your profit on the sale of 500 widgets? U= 50x T -...
1 answer
The displacement of a transverse traveling wave on a string under tension is described by: D(x,...
The displacement of a transverse traveling wave on a string under tension is described by: D(x, t) = (2.0 cm) .sin((12.57 rad/m)x + (638 rad/s)t + /2] The linear density of the string is 5.00 g/m. 1. What is the tension in the string? 2. What is the maximal speed of a point on the string? String 2 3...
1 answer
Question 2 of 10 > Many hospitals use radioisotopes for diagnosis and treatment or in palliative...
Question 2 of 10 > Many hospitals use radioisotopes for diagnosis and treatment or in palliative care. Three radioisotopes used in medicine are given. Write the isotope symbol for each radioisotope. Replace the question marks with the proper integers. Replace the letter X with the proper element ...
1 answer
QUESTION 32 The long-run cost function for Ron's Bike Rentals is: C(q) = 6q^2 (q-squared). What...
QUESTION 32 The long-run cost function for Ron's Bike Rentals is: C(q) = 6q^2 (q-squared). What is marginal cost? A) MC=12q B)MC=6q C)MC cannot be determined without MR D)12...
1 answer
Instead of propanoic acid, show using propanol please 5. Synthesis: Show how the amine could be...
Instead of propanoic acid, show using propanol please 5. Synthesis: Show how the amine could be prepared from benzene, propanoic acid and dimethyl amine. More than one synthetic transformation will be necessary. You have unlimited access to any inorganic reagent. ОН and and...
1 answer
Do I have this right? Question 3 (4 points) E Analyze the following code while (value...
Do I have this right? Question 3 (4 points) E Analyze the following code while (value >- 1 1 && value < 25) system.out.printin (++value) When integer variable value is initialized to 11 above the loop The code does not compile because the loop body is not in the braces The code runs f...
1 answer
A proton and an electron traveling at the same speed enter a uniform magnetic field. The...
A proton and an electron traveling at the same speed enter a uniform magnetic field. The velocity vector of each particle is perpendicular to the magnetic field. What will be ratio of the radii of their circular orbits (r proton/electron)? 5.5E-4 0.5 1.0 1800 3600...
1 answer
42. Which is correct about the peptide elongation by ribosome? Select one: a. Addition of a...
42. Which is correct about the peptide elongation by ribosome? Select one: a. Addition of a new amino acid is achieved by peptide transfer from the A site tRNA to the P site URNA. b. Translation is not affected by the cellular availability of GTP. O c. Peptide bond formation is catalyzed by enzymati...
1 answer
3. A queue implementation is being done using a circular array. It has a front and...
3. A queue implementation is being done using a circular array. It has a front and a rear index for the array. Given that the queue length is q.length, give the following tests: How do you test if the queue is empty? How do you test if the queue is full? Assuming the queue is not empty, how do you r...
2 answers
Almonds and Cherries Almonds and almond extracts are common ingredients in baked goods. Almonds contain the...
Almonds and Cherries Almonds and almond extracts are common ingredients in baked goods. Almonds contain the compound benzaldehyde which accounts for the odor of the nut. Benzaldehyde is also responsible for the aroma of cherries. Use the data in the table to calculate the heat of vaporization, &Delt...
1 answer
Assume that x has a normal distribution with the specified mean and standard deviation. Find the...
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 14.0; σ = 4.2 P(10 ≤ x ≤ 26)...
5 answers
Question tnio-4 Intdue Otuneont0 False
Question tnio-4 Intdue Otuneont 0 False...
1 answer
Use the formula $A=P e^{r t}$ to solve each problem. If $\$ 6000$ is deposited in an account earning $4 \%$ compounded continuously, how much will be in the account after 8 yr?
Use the formula $A=P e^{r t}$ to solve each problem. If $\$ 6000$ is deposited in an account earning $4 \%$ compounded continuously, how much will be in the account after 8 yr?...
5 answers
Given that cos(x) and 0 < X < 2 find the exact values for: (1 mark) sin(x) mark) cos(2x)
Given that cos(x) and 0 < X < 2 find the exact values for: (1 mark) sin(x) mark) cos(2x)...
1 answer
LPF Show how the Fing modulator ean be (used as a demodulator for DSBSC-AM if the...
LPF Show how the Fing modulator ean be (used as a demodulator for DSBSC-AM if the input signal [email protected] cos(2z/ 1). the input signal iss (0) st)cos(2nf) (2 points)...
1 answer
QUESTION 7 If utility is given by Uxy)=x +y and px = 3, Py = 3,...
QUESTION 7 If utility is given by Uxy)=x +y and px = 3, Py = 3, 1 = 60, this person will choose: a. (10, 10). O b.(5, 15). Oc. (15,5). Od. either (0,20) or (20, 0)....

-- 0.040394--