Answer:
The answer for (a)(-5.96, 2.36) (b) -1.8, since the difference is negative, it can be said or determined that the age of the grandfather is older
Step-by-step explanation:
Solution
(a) From the information given,
n = 10, d =-1.8, sd = 5.81
The 95% confidence interval for the population mean difference age is computed as follows:
CI =d ±tα/2,n-1 (sd/√n)
= -1.8±t₀.₀₅/₂,₁₀₋₁ (5.81/√10)
=-1.8± 2.26 (1.84)
= -1.8 ± 4.16
= (-5.96, 2.36)
Now,
There is a 95% confidence that the mean difference in age of maternal grand parents of high school students lies between - 5.96 and 2.36
(b) The age difference is calculated as the age of grand mother minus age of grand father. the point of estimate for the mean difference is as follows:
Xd = XGM - XGF
= 69.8 -71.6
=-1.8
Therefore, since the difference is negative, it can be said or determined that the age of the grandfather is older
Note: kindly find an attached copy of the complete question and table to this example below.
Its true .
A p-value less than 0.05 (typically ≤ 0.05) is statistically significant. It indicates strong evidence against the null hypothesis, as there is less than a 5% probability the null is correct
(E) "cast doubt on the aptness of a description"
Writers will occasionally include a term or phrase in quotation marks to question its veracity. The author of paragraph 2 denigrates the learning theorists by putting the word "experts" in quotation marks because of their "shocking" estimate of canine intelligence.
The answer is not (A). One may contend that the author's use of quote marks conveys surprise or even irritation. (B) is the wrong answer. The term "experts" being surrounded by quotation marks is not a show of "respect," but rather of suspicion.
The answer is not (C). There is no need to doubt the plain usage of the word "experts" in this context, even when the author may have reservations about the theories of the experts. D is likewise a poor choice.
Here's another question with an answer similar to this about quotation marks: brainly.com/question/1434552
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Answer:
An option: 18y - 6
Step-by-step explanation:
Can you give options?
For now, I'll provide with these:
18y - 6=
(Divide both sides by 2)
9y - 3
