Part i. What should be hypothesis test that best represents problem that government must face? Keep in mind that you should only state hypothesis test without solving hypothesis test, stating hypotheses and your decisions. Part ii. You are asked to fill in missing values corresponding to items [1] to [10] given in Table 3.1. Remember to state how you obtained these values. Part iii. According to information described in Table 3.1 and contrast defined in part ii, what action should government take? Justify your answer appropriately.
Course: Statistical Methods
Since 2014 government has implemented measures to reduce purchase of vehicles with high levels of CO2 emissions, which turns out to be harmful to life. According to historical data up to 2013, medium-sized vehicles (city cars, Hatchback and sedan) purchased up to that year had an average CO2 emission of 189 [g/km]. To inquire about measures taken, government conducted a cadaster during second half of 2018 and first half of 2019, randomly selecting some branches of main motor vehicle distributors in country, recording a total of 221 purchases of medium-sized vehicles. From them, information regarding level of CO2 emissions they had was extracted, noting that total sum of emissions in those days was 40,001 [g/km] (total sum of emissions squared turned out to be 8,149,000 [g/km]2), rest is summarized in Table 3.1 (attached pictures)
Government knows that if it does not assure population that its measures have been successful, its image will be seriously damaged, affecting next mayoral and council elections. Government authorities have determined that in the
Part i. What should be hypothesis test that best represents problem that government must face? Keep in mind that you should only state hypothesis test without solving hypothesis test, stating hypotheses and your decisions.
Part ii. You are asked to fill in missing values corresponding to items [1] to [10] given in Table 3.1. Remember to state how you obtained these values.
Part iii. According to information described in Table 3.1 and contrast defined in part ii, what action should government take? Justify your answer appropriately.
![NOTE: Keep in mind that Σ₁₁ (x; − Ñ‚₁)² = Σ₂_₁x² − n • (Ñ‚₂ )² .
-
i=1
Table 3.1. Descriptive summary of emissions for new vehicle purchases.
Emissions 2018-2019 [g/km]
Media
Standard error
Standard deviation
Sample variance
Range
Minimum
Maximum
Sum
Count
Comparative value
Statistic "t"
p-value = Pr (T<t)
p-value =
p-value = Pr(T>t)
2*Pr (T> [t|)
[1]
[6]
[5]
[4]
127
138
[1]
[2]
221
189
[7]
[8]
[9]
[10]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdd9c3169-4550-49e9-b005-59ea9bf39c03%2F663d9618-325b-45e6-98c3-853dedc2eb90%2Fnvg2hu7_processed.png&w=3840&q=75)
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Could you explain where t-score = -1.97 for 5% come from? I don´t see anywhere. Please. Thanks
by Bartleby ExpertSome questions:
1. Where it value "t = 181 - 18964.2728221 = -84.3235 = -1.8504" come from. Calculations dont' be cleared
2. ¿¿xn¯ =mean = 1n∑i=1nXi = 40,001221= ¿¿181?? don't be cleared too
Please, if you could transcribe to paper in manuscript all calculations for exercise because don't look good. Please, thanks Tutor
by Bartleby Expert